798ff20f81
This removes WithWorkDirFS and any other attempts to resolve the current directory (".") in host functions. This is a reaction to reality of compilers who track this inside wasm (not via host functions). One nice side effect is substantially simpler internal implementation of file-systems.
This also allows experimental.WithFS to block file access via passing nil.
Signed-off-by: Adrian Cole <adrian@tetrate.io>
800 lines
25 KiB
Go
800 lines
25 KiB
Go
package wasm
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import (
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"context"
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"errors"
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"fmt"
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"math"
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"strconv"
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"testing"
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"github.com/tetratelabs/wazero/api"
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"github.com/tetratelabs/wazero/internal/leb128"
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"github.com/tetratelabs/wazero/internal/sys"
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"github.com/tetratelabs/wazero/internal/testing/hammer"
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"github.com/tetratelabs/wazero/internal/testing/require"
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"github.com/tetratelabs/wazero/internal/u64"
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)
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func TestModuleInstance_Memory(t *testing.T) {
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tests := []struct {
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name string
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input *Module
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expected bool
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expectedLen uint32
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}{
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{
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name: "no memory",
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input: &Module{},
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},
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{
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name: "memory not exported",
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input: &Module{MemorySection: &Memory{Min: 1, Cap: 1}},
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},
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{
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name: "memory not exported, one page",
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input: &Module{MemorySection: &Memory{Min: 1, Cap: 1}},
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},
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{
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name: "memory exported, different name",
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input: &Module{
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MemorySection: &Memory{Min: 1, Cap: 1},
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ExportSection: []*Export{{Type: ExternTypeMemory, Name: "momory", Index: 0}},
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},
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},
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{
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name: "memory exported, but zero length",
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input: &Module{
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MemorySection: &Memory{},
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ExportSection: []*Export{{Type: ExternTypeMemory, Name: "memory", Index: 0}},
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},
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expected: true,
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},
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{
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name: "memory exported, one page",
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input: &Module{
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MemorySection: &Memory{Min: 1, Cap: 1},
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ExportSection: []*Export{{Type: ExternTypeMemory, Name: "memory", Index: 0}},
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},
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expected: true,
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expectedLen: 65536,
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},
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{
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name: "memory exported, two pages",
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input: &Module{
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MemorySection: &Memory{Min: 2, Cap: 2},
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ExportSection: []*Export{{Type: ExternTypeMemory, Name: "memory", Index: 0}},
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},
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expected: true,
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expectedLen: 65536 * 2,
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},
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}
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for _, tt := range tests {
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tc := tt
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t.Run(tc.name, func(t *testing.T) {
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s, ns := newStore()
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instance, err := s.Instantiate(testCtx, ns, tc.input, "test", nil, nil)
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require.NoError(t, err)
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mem := instance.ExportedMemory("memory")
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if tc.expected {
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require.Equal(t, tc.expectedLen, mem.Size(testCtx))
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} else {
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require.Nil(t, mem)
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}
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})
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}
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}
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func TestStore_Instantiate(t *testing.T) {
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s, ns := newStore()
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m, err := NewHostModule(
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"",
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map[string]interface{}{"fn": func(api.Module) {}},
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map[string]*Memory{},
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map[string]*Global{},
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Features20191205,
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)
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require.NoError(t, err)
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sysCtx := sys.DefaultContext(nil)
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mod, err := s.Instantiate(testCtx, ns, m, "", sysCtx, nil)
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require.NoError(t, err)
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defer mod.Close(testCtx)
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t.Run("CallContext defaults", func(t *testing.T) {
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require.Equal(t, ns.modules[""], mod.module)
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require.Equal(t, ns.modules[""].Memory, mod.memory)
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require.Equal(t, ns, mod.ns)
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require.Equal(t, sysCtx, mod.Sys)
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})
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}
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func TestStore_CloseWithExitCode(t *testing.T) {
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const importedModuleName = "imported"
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const importingModuleName = "test"
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tests := []struct {
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name string
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testClosed bool
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}{
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{
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name: "nothing closed",
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testClosed: false,
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},
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{
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name: "partially closed",
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testClosed: true,
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},
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}
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for _, tt := range tests {
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tc := tt
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t.Run(tc.name, func(t *testing.T) {
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s, ns := newStore()
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_, err := s.Instantiate(testCtx, ns, &Module{
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TypeSection: []*FunctionType{{}},
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FunctionSection: []uint32{0},
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CodeSection: []*Code{{Body: []byte{OpcodeEnd}}},
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ExportSection: []*Export{{Type: ExternTypeFunc, Index: 0, Name: "fn"}},
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}, importedModuleName, nil, nil)
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require.NoError(t, err)
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m2, err := s.Instantiate(testCtx, ns, &Module{
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TypeSection: []*FunctionType{{}},
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ImportSection: []*Import{{Type: ExternTypeFunc, Module: importedModuleName, Name: "fn", DescFunc: 0}},
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MemorySection: &Memory{Min: 1, Cap: 1},
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GlobalSection: []*Global{{Type: &GlobalType{}, Init: &ConstantExpression{Opcode: OpcodeI32Const, Data: const1}}},
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TableSection: []*Table{{Min: 10}},
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}, importingModuleName, nil, nil)
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require.NoError(t, err)
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if tc.testClosed {
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err = m2.CloseWithExitCode(testCtx, 2)
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require.NoError(t, err)
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}
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err = s.CloseWithExitCode(testCtx, 2)
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require.NoError(t, err)
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// If Namespace.CloseWithExitCode was dispatched properly, modules should be empty
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require.Zero(t, len(ns.modules))
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// Store state zeroed
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require.Zero(t, len(s.namespaces))
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require.Zero(t, len(s.typeIDs))
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})
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}
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}
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func TestStore_hammer(t *testing.T) {
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const importedModuleName = "imported"
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m, err := NewHostModule(
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importedModuleName,
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map[string]interface{}{"fn": func(api.Module) {}},
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map[string]*Memory{},
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map[string]*Global{},
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Features20191205,
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)
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require.NoError(t, err)
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s, ns := newStore()
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imported, err := s.Instantiate(testCtx, ns, m, importedModuleName, nil, nil)
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require.NoError(t, err)
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_, ok := ns.modules[imported.Name()]
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require.True(t, ok)
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importingModule := &Module{
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TypeSection: []*FunctionType{{}},
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FunctionSection: []uint32{0},
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CodeSection: []*Code{{Body: []byte{OpcodeEnd}}},
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MemorySection: &Memory{Min: 1, Cap: 1},
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GlobalSection: []*Global{{Type: &GlobalType{}, Init: &ConstantExpression{Opcode: OpcodeI32Const, Data: const1}}},
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TableSection: []*Table{{Min: 10}},
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ImportSection: []*Import{
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{Type: ExternTypeFunc, Module: importedModuleName, Name: "fn", DescFunc: 0},
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},
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}
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// Concurrent instantiate, close should test if locks work on the ns. If they don't, we should see leaked modules
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// after all of these complete, or an error raised.
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P := 8 // max count of goroutines
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N := 1000 // work per goroutine
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if testing.Short() { // Adjust down if `-test.short`
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P = 4
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N = 100
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}
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hammer.NewHammer(t, P, N).Run(func(name string) {
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mod, instantiateErr := s.Instantiate(testCtx, ns, importingModule, name, sys.DefaultContext(nil), nil)
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require.NoError(t, instantiateErr)
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require.NoError(t, mod.Close(testCtx))
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}, nil)
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if t.Failed() {
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return // At least one test failed, so return now.
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}
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// Close the imported module.
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require.NoError(t, imported.Close(testCtx))
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// All instances are freed.
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require.Zero(t, len(ns.modules))
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}
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func TestStore_Instantiate_Errors(t *testing.T) {
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const importedModuleName = "imported"
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const importingModuleName = "test"
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m, err := NewHostModule(
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importedModuleName,
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map[string]interface{}{"fn": func(api.Module) {}},
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map[string]*Memory{},
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map[string]*Global{},
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Features20191205,
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)
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require.NoError(t, err)
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t.Run("Fails if module name already in use", func(t *testing.T) {
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s, ns := newStore()
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_, err = s.Instantiate(testCtx, ns, m, importedModuleName, nil, nil)
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require.NoError(t, err)
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// Trying to register it again should fail
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_, err = s.Instantiate(testCtx, ns, m, importedModuleName, nil, nil)
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require.EqualError(t, err, "module[imported] has already been instantiated")
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})
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t.Run("fail resolve import", func(t *testing.T) {
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s, ns := newStore()
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_, err = s.Instantiate(testCtx, ns, m, importedModuleName, nil, nil)
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require.NoError(t, err)
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hm := ns.modules[importedModuleName]
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require.NotNil(t, hm)
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_, err = s.Instantiate(testCtx, ns, &Module{
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TypeSection: []*FunctionType{{}},
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ImportSection: []*Import{
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// The first import resolve succeeds -> increment hm.dependentCount.
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{Type: ExternTypeFunc, Module: importedModuleName, Name: "fn", DescFunc: 0},
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// But the second one tries to import uninitialized-module ->
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{Type: ExternTypeFunc, Module: "non-exist", Name: "fn", DescFunc: 0},
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},
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}, importingModuleName, nil, nil)
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require.EqualError(t, err, "module[non-exist] not instantiated")
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})
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t.Run("compilation failed", func(t *testing.T) {
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s, ns := newStore()
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_, err = s.Instantiate(testCtx, ns, m, importedModuleName, nil, nil)
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require.NoError(t, err)
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hm := ns.modules[importedModuleName]
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require.NotNil(t, hm)
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engine := s.Engine.(*mockEngine)
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engine.shouldCompileFail = true
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_, err = s.Instantiate(testCtx, ns, &Module{
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TypeSection: []*FunctionType{{}},
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FunctionSection: []uint32{0, 0},
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CodeSection: []*Code{
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{Body: []byte{OpcodeEnd}},
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{Body: []byte{OpcodeEnd}},
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},
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ImportSection: []*Import{
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{Type: ExternTypeFunc, Module: importedModuleName, Name: "fn", DescFunc: 0},
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},
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}, importingModuleName, nil, nil)
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require.EqualError(t, err, "compilation failed: some compilation error")
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})
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t.Run("start func failed", func(t *testing.T) {
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s, ns := newStore()
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engine := s.Engine.(*mockEngine)
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engine.callFailIndex = 1
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_, err = s.Instantiate(testCtx, ns, m, importedModuleName, nil, nil)
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require.NoError(t, err)
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hm := ns.modules[importedModuleName]
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require.NotNil(t, hm)
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startFuncIndex := uint32(1)
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_, err = s.Instantiate(testCtx, ns, &Module{
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TypeSection: []*FunctionType{{}},
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FunctionSection: []uint32{0},
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CodeSection: []*Code{{Body: []byte{OpcodeEnd}}},
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StartSection: &startFuncIndex,
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ImportSection: []*Import{
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{Type: ExternTypeFunc, Module: importedModuleName, Name: "fn", DescFunc: 0},
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},
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}, importingModuleName, nil, nil)
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require.EqualError(t, err, "start function[1] failed: call failed")
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})
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}
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func TestCallContext_ExportedFunction(t *testing.T) {
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host, err := NewHostModule(
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"host",
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map[string]interface{}{"host_fn": func(api.Module) {}},
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map[string]*Memory{},
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map[string]*Global{},
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Features20191205,
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)
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require.NoError(t, err)
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s, ns := newStore()
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// Add the host module
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imported, err := s.Instantiate(testCtx, ns, host, host.NameSection.ModuleName, nil, nil)
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require.NoError(t, err)
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defer imported.Close(testCtx)
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t.Run("imported function", func(t *testing.T) {
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importing, err := s.Instantiate(testCtx, ns, &Module{
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TypeSection: []*FunctionType{{}},
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ImportSection: []*Import{{Type: ExternTypeFunc, Module: "host", Name: "host_fn", DescFunc: 0}},
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MemorySection: &Memory{Min: 1, Cap: 1},
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ExportSection: []*Export{{Type: ExternTypeFunc, Name: "host.fn", Index: 0}},
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}, "test", nil, nil)
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require.NoError(t, err)
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defer importing.Close(testCtx)
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fn := importing.ExportedFunction("host.fn")
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require.NotNil(t, fn)
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require.Equal(t, fn.(*importedFn).importedFn, imported.ExportedFunction("host_fn"))
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require.Equal(t, fn.(*importedFn).importingModule, importing)
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})
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}
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type mockEngine struct {
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shouldCompileFail bool
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callFailIndex int
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}
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type mockModuleEngine struct {
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name string
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callFailIndex int
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}
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func newStore() (*Store, *Namespace) {
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return NewStore(Features20191205, &mockEngine{shouldCompileFail: false, callFailIndex: -1})
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}
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// CompileModule implements the same method as documented on wasm.Engine.
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func (e *mockEngine) CompileModule(context.Context, *Module) error { return nil }
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// CompiledModuleCount implements the same method as documented on wasm.Engine.
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func (e *mockEngine) CompiledModuleCount() uint32 { return 0 }
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// DeleteCompiledModule implements the same method as documented on wasm.Engine.
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func (e *mockEngine) DeleteCompiledModule(*Module) {}
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// NewModuleEngine implements the same method as documented on wasm.Engine.
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func (e *mockEngine) NewModuleEngine(_ string, _ *Module, _, _ []*FunctionInstance, _ []*TableInstance, _ []TableInitEntry) (ModuleEngine, error) {
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if e.shouldCompileFail {
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return nil, fmt.Errorf("some compilation error")
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}
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return &mockModuleEngine{callFailIndex: e.callFailIndex}, nil
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}
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// CreateFuncElementInstance implements the same method as documented on wasm.ModuleEngine.
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func (me *mockModuleEngine) CreateFuncElementInstance([]*Index) *ElementInstance {
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return nil
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}
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// InitializeFuncrefGlobals implements the same method as documented on wasm.ModuleEngine.
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func (e *mockModuleEngine) InitializeFuncrefGlobals(globals []*GlobalInstance) {}
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// Name implements the same method as documented on wasm.ModuleEngine.
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func (e *mockModuleEngine) Name() string {
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return e.name
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}
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// Call implements the same method as documented on wasm.ModuleEngine.
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func (e *mockModuleEngine) Call(ctx context.Context, callCtx *CallContext, f *FunctionInstance, _ ...uint64) (results []uint64, err error) {
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if e.callFailIndex >= 0 && f.Idx == Index(e.callFailIndex) {
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err = errors.New("call failed")
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return
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}
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return
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}
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// Close implements the same method as documented on wasm.ModuleEngine.
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func (e *mockModuleEngine) Close(_ context.Context) {
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}
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func TestStore_getFunctionTypeID(t *testing.T) {
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t.Run("too many functions", func(t *testing.T) {
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s, _ := newStore()
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const max = 10
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s.functionMaxTypes = max
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s.typeIDs = make(map[string]FunctionTypeID)
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for i := 0; i < max; i++ {
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s.typeIDs[strconv.Itoa(i)] = 0
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}
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_, err := s.getFunctionTypeID(&FunctionType{})
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require.Error(t, err)
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})
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t.Run("ok", func(t *testing.T) {
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tests := []*FunctionType{
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{Params: []ValueType{}},
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{Params: []ValueType{ValueTypeF32}},
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{Results: []ValueType{ValueTypeF64}},
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{Params: []ValueType{ValueTypeI32}, Results: []ValueType{ValueTypeI64}},
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}
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for _, tt := range tests {
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tc := tt
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t.Run(tc.String(), func(t *testing.T) {
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s, _ := newStore()
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actual, err := s.getFunctionTypeID(tc)
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require.NoError(t, err)
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expectedTypeID, ok := s.typeIDs[tc.String()]
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require.True(t, ok)
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require.Equal(t, expectedTypeID, actual)
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})
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}
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})
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}
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func TestExecuteConstExpression(t *testing.T) {
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t.Run("basic type const expr", func(t *testing.T) {
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for _, vt := range []ValueType{ValueTypeI32, ValueTypeI64, ValueTypeF32, ValueTypeF64} {
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t.Run(ValueTypeName(vt), func(t *testing.T) {
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expr := &ConstantExpression{}
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switch vt {
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case ValueTypeI32:
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expr.Data = []byte{1}
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expr.Opcode = OpcodeI32Const
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case ValueTypeI64:
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expr.Data = []byte{2}
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expr.Opcode = OpcodeI64Const
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case ValueTypeF32:
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expr.Data = u64.LeBytes(api.EncodeF32(math.MaxFloat32))
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expr.Opcode = OpcodeF32Const
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case ValueTypeF64:
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expr.Data = u64.LeBytes(api.EncodeF64(math.MaxFloat64))
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expr.Opcode = OpcodeF64Const
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}
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raw := executeConstExpression(nil, expr)
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require.NotNil(t, raw)
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switch vt {
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case ValueTypeI32:
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actual, ok := raw.(int32)
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require.True(t, ok)
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require.Equal(t, int32(1), actual)
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case ValueTypeI64:
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actual, ok := raw.(int64)
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require.True(t, ok)
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require.Equal(t, int64(2), actual)
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case ValueTypeF32:
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actual, ok := raw.(float32)
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require.True(t, ok)
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require.Equal(t, float32(math.MaxFloat32), actual)
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case ValueTypeF64:
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actual, ok := raw.(float64)
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require.True(t, ok)
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require.Equal(t, float64(math.MaxFloat64), actual)
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}
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})
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}
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})
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t.Run("reference types", func(t *testing.T) {
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tests := []struct {
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name string
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expr *ConstantExpression
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exp interface{}
|
|
}{
|
|
{
|
|
name: "ref.null (externref)",
|
|
expr: &ConstantExpression{
|
|
Opcode: OpcodeRefNull,
|
|
Data: []byte{RefTypeExternref},
|
|
},
|
|
exp: int64(0),
|
|
},
|
|
{
|
|
name: "ref.null (funcref)",
|
|
expr: &ConstantExpression{
|
|
Opcode: OpcodeRefNull,
|
|
Data: []byte{RefTypeFuncref},
|
|
},
|
|
exp: int64(GlobalInstanceNullFuncRefValue),
|
|
},
|
|
{
|
|
name: "ref.func",
|
|
expr: &ConstantExpression{
|
|
Opcode: OpcodeRefFunc,
|
|
Data: []byte{1},
|
|
},
|
|
exp: int32(1),
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
val := executeConstExpression(nil, tc.expr)
|
|
require.Equal(t, tc.exp, val)
|
|
})
|
|
}
|
|
})
|
|
t.Run("global expr", func(t *testing.T) {
|
|
tests := []struct {
|
|
valueType ValueType
|
|
val, valHi uint64
|
|
}{
|
|
{valueType: ValueTypeI32, val: 10},
|
|
{valueType: ValueTypeI64, val: 20},
|
|
{valueType: ValueTypeF32, val: uint64(math.Float32bits(634634432.12311))},
|
|
{valueType: ValueTypeF64, val: math.Float64bits(1.12312311)},
|
|
{valueType: ValueTypeV128, val: 0x1, valHi: 0x2},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
t.Run(ValueTypeName(tc.valueType), func(t *testing.T) {
|
|
// The index specified in Data equals zero.
|
|
expr := &ConstantExpression{Data: []byte{0}, Opcode: OpcodeGlobalGet}
|
|
globals := []*GlobalInstance{{Val: tc.val, ValHi: tc.valHi, Type: &GlobalType{ValType: tc.valueType}}}
|
|
|
|
val := executeConstExpression(globals, expr)
|
|
require.NotNil(t, val)
|
|
|
|
switch tc.valueType {
|
|
case ValueTypeI32:
|
|
actual, ok := val.(int32)
|
|
require.True(t, ok)
|
|
require.Equal(t, int32(tc.val), actual)
|
|
case ValueTypeI64:
|
|
actual, ok := val.(int64)
|
|
require.True(t, ok)
|
|
require.Equal(t, int64(tc.val), actual)
|
|
case ValueTypeF32:
|
|
actual, ok := val.(float32)
|
|
require.True(t, ok)
|
|
require.Equal(t, api.DecodeF32(tc.val), actual)
|
|
case ValueTypeF64:
|
|
actual, ok := val.(float64)
|
|
require.True(t, ok)
|
|
require.Equal(t, api.DecodeF64(tc.val), actual)
|
|
case ValueTypeV128:
|
|
vector, ok := val.([2]uint64)
|
|
require.True(t, ok)
|
|
require.Equal(t, uint64(0x1), vector[0])
|
|
require.Equal(t, uint64(0x2), vector[1])
|
|
}
|
|
})
|
|
}
|
|
})
|
|
|
|
t.Run("vector", func(t *testing.T) {
|
|
expr := &ConstantExpression{Data: []byte{
|
|
1, 0, 0, 0, 0, 0, 0, 0,
|
|
2, 0, 0, 0, 0, 0, 0, 0,
|
|
}, Opcode: OpcodeVecV128Const}
|
|
val := executeConstExpression(nil, expr)
|
|
require.NotNil(t, val)
|
|
vector, ok := val.([2]uint64)
|
|
require.True(t, ok)
|
|
require.Equal(t, uint64(0x1), vector[0])
|
|
require.Equal(t, uint64(0x2), vector[1])
|
|
})
|
|
}
|
|
|
|
func Test_resolveImports(t *testing.T) {
|
|
const moduleName = "test"
|
|
const name = "target"
|
|
|
|
t.Run("module not instantiated", func(t *testing.T) {
|
|
modules := map[string]*ModuleInstance{}
|
|
_, _, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: "unknown", Name: "unknown"}}}, modules)
|
|
require.EqualError(t, err, "module[unknown] not instantiated")
|
|
})
|
|
t.Run("export instance not found", func(t *testing.T) {
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{}, Name: moduleName},
|
|
}
|
|
_, _, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: "unknown"}}}, modules)
|
|
require.EqualError(t, err, "\"unknown\" is not exported in module \"test\"")
|
|
})
|
|
t.Run("func", func(t *testing.T) {
|
|
t.Run("ok", func(t *testing.T) {
|
|
f := &FunctionInstance{Type: &FunctionType{Results: []ValueType{ValueTypeF32}}}
|
|
g := &FunctionInstance{Type: &FunctionType{Results: []ValueType{ValueTypeI32}}}
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {
|
|
Exports: map[string]*ExportInstance{
|
|
name: {Function: f},
|
|
"": {Function: g},
|
|
},
|
|
Name: moduleName,
|
|
},
|
|
}
|
|
m := &Module{
|
|
TypeSection: []*FunctionType{{Results: []ValueType{ValueTypeF32}}, {Results: []ValueType{ValueTypeI32}}},
|
|
ImportSection: []*Import{
|
|
{Module: moduleName, Name: name, Type: ExternTypeFunc, DescFunc: 0},
|
|
{Module: moduleName, Name: "", Type: ExternTypeFunc, DescFunc: 1},
|
|
},
|
|
}
|
|
functions, _, _, _, err := resolveImports(m, modules)
|
|
require.NoError(t, err)
|
|
require.True(t, functionsContain(functions, f), "expected to find %v in %v", f, functions)
|
|
require.True(t, functionsContain(functions, g), "expected to find %v in %v", g, functions)
|
|
})
|
|
t.Run("type out of range", func(t *testing.T) {
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {}}, Name: moduleName},
|
|
}
|
|
_, _, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeFunc, DescFunc: 100}}}, modules)
|
|
require.EqualError(t, err, "import[0] func[test.target]: function type out of range")
|
|
})
|
|
t.Run("signature mismatch", func(t *testing.T) {
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {
|
|
Function: &FunctionInstance{Type: &FunctionType{}},
|
|
}}, Name: moduleName},
|
|
}
|
|
m := &Module{
|
|
TypeSection: []*FunctionType{{Results: []ValueType{ValueTypeF32}}},
|
|
ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeFunc, DescFunc: 0}},
|
|
}
|
|
_, _, _, _, err := resolveImports(m, modules)
|
|
require.EqualError(t, err, "import[0] func[test.target]: signature mismatch: v_f32 != v_v")
|
|
})
|
|
})
|
|
t.Run("global", func(t *testing.T) {
|
|
t.Run("ok", func(t *testing.T) {
|
|
g := &GlobalInstance{Type: &GlobalType{ValType: ValueTypeI32}}
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {Type: ExternTypeGlobal, Global: g}}, Name: moduleName},
|
|
}
|
|
_, globals, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeGlobal, DescGlobal: g.Type}}}, modules)
|
|
require.NoError(t, err)
|
|
require.True(t, globalsContain(globals, g), "expected to find %v in %v", g, globals)
|
|
})
|
|
t.Run("mutability mismatch", func(t *testing.T) {
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {
|
|
Type: ExternTypeGlobal,
|
|
Global: &GlobalInstance{Type: &GlobalType{Mutable: false}},
|
|
}}, Name: moduleName},
|
|
}
|
|
_, _, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeGlobal, DescGlobal: &GlobalType{Mutable: true}}}}, modules)
|
|
require.EqualError(t, err, "import[0] global[test.target]: mutability mismatch: true != false")
|
|
})
|
|
t.Run("type mismatch", func(t *testing.T) {
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {
|
|
Type: ExternTypeGlobal,
|
|
Global: &GlobalInstance{Type: &GlobalType{ValType: ValueTypeI32}},
|
|
}}, Name: moduleName},
|
|
}
|
|
_, _, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeGlobal, DescGlobal: &GlobalType{ValType: ValueTypeF64}}}}, modules)
|
|
require.EqualError(t, err, "import[0] global[test.target]: value type mismatch: f64 != i32")
|
|
})
|
|
})
|
|
t.Run("memory", func(t *testing.T) {
|
|
t.Run("ok", func(t *testing.T) {
|
|
max := uint32(10)
|
|
memoryInst := &MemoryInstance{Max: max}
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {
|
|
Type: ExternTypeMemory,
|
|
Memory: memoryInst,
|
|
}}, Name: moduleName},
|
|
}
|
|
_, _, _, memory, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeMemory, DescMem: &Memory{Max: max}}}}, modules)
|
|
require.NoError(t, err)
|
|
require.Equal(t, memory, memoryInst)
|
|
})
|
|
t.Run("minimum size mismatch", func(t *testing.T) {
|
|
importMemoryType := &Memory{Min: 2, Cap: 2}
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {
|
|
Type: ExternTypeMemory,
|
|
Memory: &MemoryInstance{Min: importMemoryType.Min - 1, Cap: 2},
|
|
}}, Name: moduleName},
|
|
}
|
|
_, _, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeMemory, DescMem: importMemoryType}}}, modules)
|
|
require.EqualError(t, err, "import[0] memory[test.target]: minimum size mismatch: 2 > 1")
|
|
})
|
|
t.Run("maximum size mismatch", func(t *testing.T) {
|
|
max := uint32(10)
|
|
importMemoryType := &Memory{Max: max}
|
|
modules := map[string]*ModuleInstance{
|
|
moduleName: {Exports: map[string]*ExportInstance{name: {
|
|
Type: ExternTypeMemory,
|
|
Memory: &MemoryInstance{Max: MemoryLimitPages},
|
|
}}, Name: moduleName},
|
|
}
|
|
_, _, _, _, err := resolveImports(&Module{ImportSection: []*Import{{Module: moduleName, Name: name, Type: ExternTypeMemory, DescMem: importMemoryType}}}, modules)
|
|
require.EqualError(t, err, "import[0] memory[test.target]: maximum size mismatch: 10 < 65536")
|
|
})
|
|
})
|
|
}
|
|
|
|
func TestModuleInstance_validateData(t *testing.T) {
|
|
m := &ModuleInstance{Memory: &MemoryInstance{Buffer: make([]byte, 5)}}
|
|
tests := []struct {
|
|
name string
|
|
data []*DataSegment
|
|
expErr bool
|
|
}{
|
|
{
|
|
name: "ok",
|
|
data: []*DataSegment{
|
|
{OffsetExpression: &ConstantExpression{Opcode: OpcodeI32Const, Data: const1}, Init: []byte{0}},
|
|
{OffsetExpression: &ConstantExpression{Opcode: OpcodeI32Const, Data: leb128.EncodeInt32(2)}, Init: []byte{0}},
|
|
},
|
|
},
|
|
{
|
|
name: "out of bounds - single one byte",
|
|
data: []*DataSegment{
|
|
{OffsetExpression: &ConstantExpression{Opcode: OpcodeI32Const, Data: leb128.EncodeInt32(5)}, Init: []byte{0}},
|
|
},
|
|
expErr: true,
|
|
},
|
|
{
|
|
name: "out of bounds - multi bytes",
|
|
data: []*DataSegment{
|
|
{OffsetExpression: &ConstantExpression{Opcode: OpcodeI32Const, Data: leb128.EncodeInt32(3)}, Init: []byte{0, 1, 2}},
|
|
},
|
|
expErr: true,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
err := m.validateData(tc.data)
|
|
if tc.expErr {
|
|
require.Error(t, err)
|
|
} else {
|
|
require.NoError(t, err)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestModuleInstance_applyData(t *testing.T) {
|
|
m := &ModuleInstance{Memory: &MemoryInstance{Buffer: make([]byte, 10)}}
|
|
err := m.applyData([]*DataSegment{
|
|
{OffsetExpression: &ConstantExpression{Opcode: OpcodeI32Const, Data: const0}, Init: []byte{0xa, 0xf}},
|
|
{OffsetExpression: &ConstantExpression{Opcode: OpcodeI32Const, Data: leb128.EncodeUint32(8)}, Init: []byte{0x1, 0x5}},
|
|
})
|
|
require.NoError(t, err)
|
|
require.Equal(t, []byte{0xa, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x5}, m.Memory.Buffer)
|
|
}
|
|
|
|
func globalsContain(globals []*GlobalInstance, want *GlobalInstance) bool {
|
|
for _, f := range globals {
|
|
if f == want {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func functionsContain(functions []*FunctionInstance, want *FunctionInstance) bool {
|
|
for _, f := range functions {
|
|
if f == want {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|