551 lines
16 KiB
Go
551 lines
16 KiB
Go
package wazero
|
|
|
|
import (
|
|
"context"
|
|
_ "embed"
|
|
"errors"
|
|
"testing"
|
|
|
|
"github.com/tetratelabs/wazero/api"
|
|
"github.com/tetratelabs/wazero/internal/leb128"
|
|
"github.com/tetratelabs/wazero/internal/testing/require"
|
|
"github.com/tetratelabs/wazero/internal/wasm"
|
|
binaryformat "github.com/tetratelabs/wazero/internal/wasm/binary"
|
|
"github.com/tetratelabs/wazero/sys"
|
|
)
|
|
|
|
var (
|
|
binaryNamedZero = binaryformat.EncodeModule(&wasm.Module{NameSection: &wasm.NameSection{ModuleName: "0"}})
|
|
// testCtx is an arbitrary, non-default context. Non-nil also prevents linter errors.
|
|
testCtx = context.WithValue(context.Background(), struct{}{}, "arbitrary")
|
|
)
|
|
|
|
func TestRuntime_CompileModule(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
runtime Runtime
|
|
wasm []byte
|
|
expectedName string
|
|
}{
|
|
{
|
|
name: "no name section",
|
|
wasm: binaryformat.EncodeModule(&wasm.Module{}),
|
|
},
|
|
{
|
|
name: "empty NameSection.ModuleName",
|
|
wasm: binaryformat.EncodeModule(&wasm.Module{NameSection: &wasm.NameSection{}}),
|
|
},
|
|
{
|
|
name: "NameSection.ModuleName",
|
|
wasm: binaryformat.EncodeModule(&wasm.Module{NameSection: &wasm.NameSection{ModuleName: "test"}}),
|
|
expectedName: "test",
|
|
},
|
|
}
|
|
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
m, err := r.CompileModule(testCtx, tc.wasm, NewCompileConfig())
|
|
require.NoError(t, err)
|
|
code := m.(*compiledModule)
|
|
if tc.expectedName != "" {
|
|
require.Equal(t, tc.expectedName, code.module.NameSection.ModuleName)
|
|
}
|
|
require.Equal(t, r.(*runtime).store.Engine, code.compiledEngine)
|
|
})
|
|
}
|
|
|
|
t.Run("WithMemorySizer", func(t *testing.T) {
|
|
testWasm := binaryformat.EncodeModule(&wasm.Module{MemorySection: &wasm.Memory{Min: 1}})
|
|
|
|
m, err := r.CompileModule(testCtx, testWasm, NewCompileConfig().
|
|
WithMemorySizer(func(minPages uint32, maxPages *uint32) (min, capacity, max uint32) {
|
|
return 1, 2, 3
|
|
}))
|
|
require.NoError(t, err)
|
|
code := m.(*compiledModule)
|
|
|
|
require.Equal(t, &wasm.Memory{
|
|
Min: 1,
|
|
Cap: 2,
|
|
Max: 3,
|
|
}, code.module.MemorySection)
|
|
})
|
|
}
|
|
|
|
func TestRuntime_CompileModule_Errors(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
config CompileConfig
|
|
wasm []byte
|
|
expectedErr string
|
|
}{
|
|
{
|
|
name: "nil",
|
|
expectedErr: "binary == nil",
|
|
},
|
|
{
|
|
name: "invalid binary",
|
|
wasm: append(binaryformat.Magic, []byte("yolo")...),
|
|
expectedErr: "invalid version header",
|
|
},
|
|
{
|
|
name: "memory cap < min", // only one test to avoid duplicating tests in module_test.go
|
|
config: NewCompileConfig().WithMemorySizer(func(minPages uint32, maxPages *uint32) (min, capacity, max uint32) {
|
|
return 3, 1, 3
|
|
}),
|
|
wasm: binaryformat.EncodeModule(&wasm.Module{
|
|
MemorySection: &wasm.Memory{Min: 3},
|
|
}),
|
|
expectedErr: "section memory: capacity 1 pages (64 Ki) less than minimum 3 pages (192 Ki)",
|
|
},
|
|
{
|
|
name: "memory cap < min exported", // only one test to avoid duplicating tests in module_test.go
|
|
config: NewCompileConfig().WithMemorySizer(func(minPages uint32, maxPages *uint32) (min, capacity, max uint32) {
|
|
return 3, 2, 3
|
|
}),
|
|
wasm: binaryformat.EncodeModule(&wasm.Module{
|
|
MemorySection: &wasm.Memory{},
|
|
ExportSection: []*wasm.Export{
|
|
{Name: "memory", Type: api.ExternTypeMemory},
|
|
},
|
|
}),
|
|
expectedErr: "section memory: capacity 2 pages (128 Ki) less than minimum 3 pages (192 Ki)",
|
|
},
|
|
{
|
|
name: "memory has too many pages",
|
|
wasm: binaryformat.EncodeModule(&wasm.Module{MemorySection: &wasm.Memory{Min: 2, Cap: 2, Max: 70000, IsMaxEncoded: true}}),
|
|
expectedErr: "section memory: max 70000 pages (4 Gi) over limit of 65536 pages (4 Gi)",
|
|
},
|
|
}
|
|
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
config := tc.config
|
|
if config == nil {
|
|
config = NewCompileConfig()
|
|
}
|
|
_, err := r.CompileModule(testCtx, tc.wasm, config)
|
|
require.EqualError(t, err, tc.expectedErr)
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestModule_Memory only covers a couple cases to avoid duplication of internal/wasm/runtime_test.go
|
|
func TestModule_Memory(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
builder func(Runtime) ModuleBuilder
|
|
expected bool
|
|
expectedLen uint32
|
|
}{
|
|
{
|
|
name: "no memory",
|
|
builder: func(r Runtime) ModuleBuilder {
|
|
return r.NewModuleBuilder(t.Name())
|
|
},
|
|
},
|
|
{
|
|
name: "memory exported, one page",
|
|
builder: func(r Runtime) ModuleBuilder {
|
|
return r.NewModuleBuilder(t.Name()).ExportMemory("memory", 1)
|
|
},
|
|
expected: true,
|
|
expectedLen: 65536,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
// Instantiate the module and get the export of the above memory
|
|
module, err := tc.builder(r).Instantiate(testCtx, r)
|
|
require.NoError(t, err)
|
|
|
|
mem := module.ExportedMemory("memory")
|
|
if tc.expected {
|
|
require.Equal(t, tc.expectedLen, mem.Size(testCtx))
|
|
} else {
|
|
require.Nil(t, mem)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestModule_Global only covers a couple cases to avoid duplication of internal/wasm/global_test.go
|
|
func TestModule_Global(t *testing.T) {
|
|
globalVal := int64(100) // intentionally a value that differs in signed vs unsigned encoding
|
|
|
|
tests := []struct {
|
|
name string
|
|
module *wasm.Module // module as wat doesn't yet support globals
|
|
builder func(Runtime) ModuleBuilder
|
|
expected, expectedMutable bool
|
|
}{
|
|
{
|
|
name: "no global",
|
|
module: &wasm.Module{},
|
|
},
|
|
{
|
|
name: "global not exported",
|
|
module: &wasm.Module{
|
|
GlobalSection: []*wasm.Global{
|
|
{
|
|
Type: &wasm.GlobalType{ValType: wasm.ValueTypeI64, Mutable: true},
|
|
Init: &wasm.ConstantExpression{Opcode: wasm.OpcodeI64Const, Data: leb128.EncodeInt64(globalVal)},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "global exported",
|
|
builder: func(r Runtime) ModuleBuilder {
|
|
return r.NewModuleBuilder(t.Name()).ExportGlobalI64("global", globalVal)
|
|
},
|
|
expected: true,
|
|
},
|
|
{
|
|
name: "global exported and mutable",
|
|
module: &wasm.Module{
|
|
GlobalSection: []*wasm.Global{
|
|
{
|
|
Type: &wasm.GlobalType{ValType: wasm.ValueTypeI64, Mutable: true},
|
|
Init: &wasm.ConstantExpression{Opcode: wasm.OpcodeI64Const, Data: leb128.EncodeInt64(globalVal)},
|
|
},
|
|
},
|
|
ExportSection: []*wasm.Export{
|
|
{Type: wasm.ExternTypeGlobal, Name: "global"},
|
|
},
|
|
},
|
|
expected: true,
|
|
expectedMutable: true,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
r := NewRuntime().(*runtime)
|
|
defer r.Close(testCtx)
|
|
|
|
var m CompiledModule
|
|
if tc.module != nil {
|
|
m = &compiledModule{module: tc.module}
|
|
} else {
|
|
m, _ = tc.builder(r).Compile(testCtx, NewCompileConfig())
|
|
}
|
|
code := m.(*compiledModule)
|
|
|
|
err := r.store.Engine.CompileModule(testCtx, code.module)
|
|
require.NoError(t, err)
|
|
|
|
// Instantiate the module and get the export of the above global
|
|
module, err := r.InstantiateModule(testCtx, code, NewModuleConfig())
|
|
require.NoError(t, err)
|
|
|
|
global := module.ExportedGlobal("global")
|
|
if !tc.expected {
|
|
require.Nil(t, global)
|
|
return
|
|
}
|
|
require.Equal(t, uint64(globalVal), global.Get(testCtx))
|
|
|
|
mutable, ok := global.(api.MutableGlobal)
|
|
require.Equal(t, tc.expectedMutable, ok)
|
|
if ok {
|
|
mutable.Set(testCtx, 2)
|
|
require.Equal(t, uint64(2), global.Get(testCtx))
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestRuntime_InstantiateModule_UsesContext(t *testing.T) {
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
// Define a function that will be set as the start function
|
|
var calledStart bool
|
|
start := func(ctx context.Context) {
|
|
calledStart = true
|
|
require.Equal(t, testCtx, ctx)
|
|
}
|
|
|
|
_, err := r.NewModuleBuilder("env").
|
|
ExportFunction("start", start).
|
|
Instantiate(testCtx, r)
|
|
require.NoError(t, err)
|
|
|
|
one := uint32(1)
|
|
binary := binaryformat.EncodeModule(&wasm.Module{
|
|
TypeSection: []*wasm.FunctionType{{}},
|
|
ImportSection: []*wasm.Import{{Module: "env", Name: "start", Type: wasm.ExternTypeFunc, DescFunc: 0}},
|
|
FunctionSection: []wasm.Index{0},
|
|
CodeSection: []*wasm.Code{
|
|
{Body: []byte{wasm.OpcodeCall, 0, wasm.OpcodeEnd}}, // Call the imported env.start.
|
|
},
|
|
StartSection: &one,
|
|
})
|
|
|
|
code, err := r.CompileModule(testCtx, binary, NewCompileConfig())
|
|
require.NoError(t, err)
|
|
|
|
// Instantiate the module, which calls the start function. This will fail if the context wasn't as intended.
|
|
mod, err := r.InstantiateModule(testCtx, code, NewModuleConfig())
|
|
require.NoError(t, err)
|
|
|
|
require.True(t, calledStart)
|
|
|
|
// Closing the module shouldn't remove the compiler cache
|
|
require.NoError(t, mod.Close(testCtx))
|
|
require.Equal(t, uint32(2), r.(*runtime).store.Engine.CompiledModuleCount())
|
|
}
|
|
|
|
// TestRuntime_InstantiateModuleFromBinary_DoesntEnforce_Start ensures wapc-go work when modules import WASI, but don't
|
|
// export "_start".
|
|
func TestRuntime_InstantiateModuleFromBinary_DoesntEnforce_Start(t *testing.T) {
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
binary := binaryformat.EncodeModule(&wasm.Module{
|
|
MemorySection: &wasm.Memory{Min: 1},
|
|
ExportSection: []*wasm.Export{{Name: "memory", Type: wasm.ExternTypeMemory, Index: 0}},
|
|
})
|
|
|
|
mod, err := r.InstantiateModuleFromBinary(testCtx, binary)
|
|
require.NoError(t, err)
|
|
require.NoError(t, mod.Close(testCtx))
|
|
}
|
|
|
|
func TestRuntime_InstantiateModuleFromBinary_ErrorOnStart(t *testing.T) {
|
|
tests := []struct {
|
|
name, wasm string
|
|
}{
|
|
{
|
|
name: "_start function",
|
|
wasm: `(module
|
|
(import "" "start" (func $start))
|
|
(export "_start" (func $start))
|
|
)`,
|
|
},
|
|
{
|
|
name: ".start function",
|
|
wasm: `(module
|
|
(import "" "start" (func $start))
|
|
(start $start)
|
|
)`,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
start := func(context.Context) {
|
|
panic(errors.New("ice cream"))
|
|
}
|
|
|
|
host, err := r.NewModuleBuilder("").
|
|
ExportFunction("start", start).
|
|
Instantiate(testCtx, r)
|
|
require.NoError(t, err)
|
|
|
|
// Start the module as a WASI command. We expect it to fail.
|
|
_, err = r.InstantiateModuleFromBinary(testCtx, []byte(tc.wasm))
|
|
require.Error(t, err)
|
|
|
|
// Close the imported module, which should remove its compiler cache.
|
|
require.NoError(t, host.Close(testCtx))
|
|
|
|
// The compiler cache of the importing module should be removed on error.
|
|
require.Zero(t, r.(*runtime).store.Engine.CompiledModuleCount())
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestRuntime_InstantiateModule_WithName tests that we can pre-validate (cache) a module and instantiate it under
|
|
// different names. This pattern is used in wapc-go.
|
|
func TestRuntime_InstantiateModule_WithName(t *testing.T) {
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
base, err := r.CompileModule(testCtx, binaryNamedZero, NewCompileConfig())
|
|
require.NoError(t, err)
|
|
|
|
require.Equal(t, "0", base.(*compiledModule).module.NameSection.ModuleName)
|
|
|
|
// Use the same runtime to instantiate multiple modules
|
|
internal := r.(*runtime).ns
|
|
m1, err := r.InstantiateModule(testCtx, base, NewModuleConfig().WithName("1"))
|
|
require.NoError(t, err)
|
|
|
|
require.Nil(t, internal.Module("0"))
|
|
require.Equal(t, internal.Module("1"), m1)
|
|
|
|
m2, err := r.InstantiateModule(testCtx, base, NewModuleConfig().WithName("2"))
|
|
require.NoError(t, err)
|
|
|
|
require.Nil(t, internal.Module("0"))
|
|
require.Equal(t, internal.Module("2"), m2)
|
|
}
|
|
|
|
func TestRuntime_InstantiateModule_ExitError(t *testing.T) {
|
|
r := NewRuntime()
|
|
defer r.Close(testCtx)
|
|
|
|
start := func(ctx context.Context, m api.Module) {
|
|
require.NoError(t, m.CloseWithExitCode(ctx, 2))
|
|
}
|
|
|
|
_, err := r.NewModuleBuilder("env").ExportFunction("exit", start).Instantiate(testCtx, r)
|
|
require.NoError(t, err)
|
|
|
|
one := uint32(1)
|
|
binary := binaryformat.EncodeModule(&wasm.Module{
|
|
TypeSection: []*wasm.FunctionType{{}},
|
|
ImportSection: []*wasm.Import{{Module: "env", Name: "exit", Type: wasm.ExternTypeFunc, DescFunc: 0}},
|
|
FunctionSection: []wasm.Index{0},
|
|
CodeSection: []*wasm.Code{
|
|
{Body: []byte{wasm.OpcodeCall, 0, wasm.OpcodeEnd}}, // Call the imported env.start.
|
|
},
|
|
StartSection: &one,
|
|
})
|
|
|
|
code, err := r.CompileModule(testCtx, binary, NewCompileConfig())
|
|
require.NoError(t, err)
|
|
|
|
// Instantiate the module, which calls the start function.
|
|
_, err = r.InstantiateModule(testCtx, code, NewModuleConfig().WithName("call-exit"))
|
|
|
|
// Ensure the exit error propagated and didn't wrap.
|
|
require.Equal(t, err, sys.NewExitError("call-exit", 2))
|
|
}
|
|
|
|
func TestRuntime_CloseWithExitCode(t *testing.T) {
|
|
bin := binaryformat.EncodeModule(&wasm.Module{
|
|
TypeSection: []*wasm.FunctionType{{}},
|
|
FunctionSection: []wasm.Index{0},
|
|
CodeSection: []*wasm.Code{{Body: []byte{wasm.OpcodeEnd}}},
|
|
ExportSection: []*wasm.Export{{Type: wasm.ExternTypeFunc, Index: 0, Name: "func"}},
|
|
})
|
|
|
|
tests := []struct {
|
|
name string
|
|
exitCode uint32
|
|
}{
|
|
{
|
|
name: "exit code 0",
|
|
exitCode: uint32(0),
|
|
},
|
|
{
|
|
name: "exit code 2",
|
|
exitCode: uint32(2),
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
r := NewRuntime()
|
|
|
|
code, err := r.CompileModule(testCtx, bin, NewCompileConfig())
|
|
require.NoError(t, err)
|
|
|
|
// Instantiate two modules.
|
|
m1, err := r.InstantiateModule(testCtx, code, NewModuleConfig().WithName("mod1"))
|
|
require.NoError(t, err)
|
|
m2, err := r.InstantiateModule(testCtx, code, NewModuleConfig().WithName("mod2"))
|
|
require.NoError(t, err)
|
|
|
|
func1 := m1.ExportedFunction("func")
|
|
func2 := m2.ExportedFunction("func")
|
|
|
|
// Modules not closed so calls succeed
|
|
|
|
_, err = func1.Call(testCtx)
|
|
require.NoError(t, err)
|
|
|
|
_, err = func2.Call(testCtx)
|
|
require.NoError(t, err)
|
|
|
|
if tc.exitCode == 0 {
|
|
err = r.Close(testCtx)
|
|
} else {
|
|
err = r.CloseWithExitCode(testCtx, tc.exitCode)
|
|
}
|
|
require.NoError(t, err)
|
|
|
|
// Modules closed so calls fail
|
|
_, err = func1.Call(testCtx)
|
|
require.ErrorIs(t, err, sys.NewExitError("mod1", tc.exitCode))
|
|
|
|
_, err = func2.Call(testCtx)
|
|
require.ErrorIs(t, err, sys.NewExitError("mod2", tc.exitCode))
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestRuntime_Close_ClosesCompiledModules(t *testing.T) {
|
|
engine := &mockEngine{name: "mock", cachedModules: map[*wasm.Module]struct{}{}}
|
|
conf := *engineLessConfig
|
|
conf.newEngine = func(wasm.Features) wasm.Engine {
|
|
return engine
|
|
}
|
|
r := NewRuntimeWithConfig(&conf)
|
|
defer r.Close(testCtx)
|
|
|
|
// Normally compiled modules are closed when instantiated but this is never instantiated.
|
|
_, err := r.CompileModule(testCtx, binaryNamedZero, NewCompileConfig())
|
|
require.NoError(t, err)
|
|
require.Equal(t, uint32(1), engine.CompiledModuleCount())
|
|
|
|
err = r.Close(testCtx)
|
|
require.NoError(t, err)
|
|
|
|
// Closing the runtime should remove the compiler cache
|
|
require.Zero(t, engine.CompiledModuleCount())
|
|
}
|
|
|
|
type mockEngine struct {
|
|
name string
|
|
cachedModules map[*wasm.Module]struct{}
|
|
}
|
|
|
|
// CompileModule implements the same method as documented on wasm.Engine.
|
|
func (e *mockEngine) CompileModule(_ context.Context, module *wasm.Module) error {
|
|
e.cachedModules[module] = struct{}{}
|
|
return nil
|
|
}
|
|
|
|
// CompiledModuleCount implements the same method as documented on wasm.Engine.
|
|
func (e *mockEngine) CompiledModuleCount() uint32 {
|
|
return uint32(len(e.cachedModules))
|
|
}
|
|
|
|
// DeleteCompiledModule implements the same method as documented on wasm.Engine.
|
|
func (e *mockEngine) DeleteCompiledModule(module *wasm.Module) {
|
|
delete(e.cachedModules, module)
|
|
}
|
|
|
|
// NewModuleEngine implements the same method as documented on wasm.Engine.
|
|
func (e *mockEngine) NewModuleEngine(_ string, _ *wasm.Module, _, _ []*wasm.FunctionInstance, _ []*wasm.TableInstance, _ []wasm.TableInitEntry) (wasm.ModuleEngine, error) {
|
|
return nil, nil
|
|
}
|