3cd9cbcfb5
This adds host functions that work on dynamic function tables. These are
only used by emscripten, but require some infrastructure to support it.
I added the least possible to due the task. This also only handles i32
and void returns with up to four parameters as that covers the needs of
PDFium. Future integrations may need more parameters or a mix of floats.
Such use cases should be addressed as they come as otherwise it is a lot
of work for the cartesian product of all combinations.
See 1b0d724fd5/test/passes/post-emscripten.wast
See https://github.com/jerbob92/go-pdfium-wasm
Signed-off-by: Adrian Cole <adrian@tetrate.io>
286 lines
7.9 KiB
Go
286 lines
7.9 KiB
Go
package wasm
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"testing"
|
|
|
|
"github.com/tetratelabs/wazero/internal/sys"
|
|
testfs "github.com/tetratelabs/wazero/internal/testing/fs"
|
|
"github.com/tetratelabs/wazero/internal/testing/require"
|
|
)
|
|
|
|
func TestCallContext_WithMemory(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
mod *CallContext
|
|
mem *MemoryInstance
|
|
expectSame bool
|
|
}{
|
|
{
|
|
name: "nil->nil: same",
|
|
mod: &CallContext{},
|
|
mem: nil,
|
|
expectSame: true,
|
|
},
|
|
{
|
|
name: "nil->mem: not same",
|
|
mod: &CallContext{},
|
|
mem: &MemoryInstance{},
|
|
expectSame: false,
|
|
},
|
|
{
|
|
name: "mem->nil: same",
|
|
mod: &CallContext{memory: &MemoryInstance{}},
|
|
mem: nil,
|
|
expectSame: true,
|
|
},
|
|
{
|
|
name: "mem1->mem2: not same",
|
|
mod: &CallContext{memory: &MemoryInstance{}},
|
|
mem: &MemoryInstance{},
|
|
expectSame: false,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
mod2 := tc.mod.WithMemory(tc.mem)
|
|
if tc.expectSame {
|
|
require.Same(t, tc.mod, mod2)
|
|
} else {
|
|
require.NotSame(t, tc.mod, mod2)
|
|
require.Equal(t, tc.mem, mod2.memory)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestCallContext_String(t *testing.T) {
|
|
s, ns := newStore()
|
|
|
|
tests := []struct {
|
|
name, moduleName, expected string
|
|
}{
|
|
{
|
|
name: "empty",
|
|
moduleName: "",
|
|
expected: "Module[]",
|
|
},
|
|
{
|
|
name: "not empty",
|
|
moduleName: "math",
|
|
expected: "Module[math]",
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
// Ensure paths that can create the host module can see the name.
|
|
m, err := s.Instantiate(context.Background(), ns, &Module{}, tc.moduleName, nil, nil)
|
|
defer m.Close(testCtx) //nolint
|
|
|
|
require.NoError(t, err)
|
|
require.Equal(t, tc.expected, m.String())
|
|
require.Equal(t, tc.expected, ns.Module(m.Name()).String())
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestCallContext_Close(t *testing.T) {
|
|
s, ns := newStore()
|
|
|
|
tests := []struct {
|
|
name string
|
|
closer func(context.Context, *CallContext) error
|
|
expectedClosed uint64
|
|
}{
|
|
{
|
|
name: "Close()",
|
|
closer: func(ctx context.Context, callContext *CallContext) error {
|
|
return callContext.Close(ctx)
|
|
},
|
|
expectedClosed: uint64(1),
|
|
},
|
|
{
|
|
name: "CloseWithExitCode(255)",
|
|
closer: func(ctx context.Context, callContext *CallContext) error {
|
|
return callContext.CloseWithExitCode(ctx, 255)
|
|
},
|
|
expectedClosed: uint64(255)<<32 + 1,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
t.Run(fmt.Sprintf("%s calls ns.CloseWithExitCode(module.name))", tc.name), func(t *testing.T) {
|
|
for _, ctx := range []context.Context{nil, testCtx} { // Ensure it doesn't crash on nil!
|
|
moduleName := t.Name()
|
|
m, err := s.Instantiate(ctx, ns, &Module{}, moduleName, nil, nil)
|
|
require.NoError(t, err)
|
|
|
|
// We use side effects to see if Close called ns.CloseWithExitCode (without repeating store_test.go).
|
|
// One side effect of ns.CloseWithExitCode is that the moduleName can no longer be looked up.
|
|
require.Equal(t, ns.Module(moduleName), m)
|
|
|
|
// Closing should not err.
|
|
require.NoError(t, tc.closer(ctx, m))
|
|
|
|
require.Equal(t, tc.expectedClosed, *m.closed)
|
|
|
|
// Verify our intended side-effect
|
|
require.Nil(t, ns.Module(moduleName))
|
|
|
|
// Verify no error closing again.
|
|
require.NoError(t, tc.closer(ctx, m))
|
|
}
|
|
})
|
|
}
|
|
|
|
t.Run("calls Context.Close()", func(t *testing.T) {
|
|
sysCtx := sys.DefaultContext(testfs.FS{"foo": &testfs.File{}})
|
|
fsCtx := sysCtx.FS(testCtx)
|
|
|
|
_, err := fsCtx.OpenFile(testCtx, "/foo")
|
|
require.NoError(t, err)
|
|
|
|
m, err := s.Instantiate(context.Background(), ns, &Module{}, t.Name(), sysCtx, nil)
|
|
require.NoError(t, err)
|
|
|
|
// We use side effects to determine if Close in fact called Context.Close (without repeating sys_test.go).
|
|
// One side effect of Context.Close is that it clears the openedFiles map. Verify our base case.
|
|
_, ok := fsCtx.OpenedFile(testCtx, 3)
|
|
require.True(t, ok, "sysCtx.openedFiles was empty")
|
|
|
|
// Closing should not err.
|
|
require.NoError(t, m.Close(testCtx))
|
|
|
|
// Verify our intended side-effect
|
|
_, ok = fsCtx.OpenedFile(testCtx, 3)
|
|
require.False(t, ok, "expected no opened files")
|
|
|
|
// Verify no error closing again.
|
|
require.NoError(t, m.Close(testCtx))
|
|
})
|
|
|
|
t.Run("error closing", func(t *testing.T) {
|
|
// Right now, the only way to err closing the sys context is if a File.Close erred.
|
|
testFS := testfs.FS{"foo": &testfs.File{CloseErr: errors.New("error closing")}}
|
|
sysCtx := sys.DefaultContext(testFS)
|
|
fsCtx := sysCtx.FS(testCtx)
|
|
|
|
_, err := fsCtx.OpenFile(testCtx, "/foo")
|
|
require.NoError(t, err)
|
|
|
|
m, err := s.Instantiate(context.Background(), ns, &Module{}, t.Name(), sysCtx, nil)
|
|
require.NoError(t, err)
|
|
|
|
require.EqualError(t, m.Close(testCtx), "error closing")
|
|
|
|
// Verify our intended side-effect
|
|
_, ok := fsCtx.OpenedFile(testCtx, 3)
|
|
require.False(t, ok, "expected no opened files")
|
|
})
|
|
}
|
|
|
|
func TestCallContext_CallDynamic(t *testing.T) {
|
|
s, ns := newStore()
|
|
|
|
tests := []struct {
|
|
name string
|
|
closer func(context.Context, *CallContext) error
|
|
expectedClosed uint64
|
|
}{
|
|
{
|
|
name: "Close()",
|
|
closer: func(ctx context.Context, callContext *CallContext) error {
|
|
return callContext.Close(ctx)
|
|
},
|
|
expectedClosed: uint64(1),
|
|
},
|
|
{
|
|
name: "CloseWithExitCode(255)",
|
|
closer: func(ctx context.Context, callContext *CallContext) error {
|
|
return callContext.CloseWithExitCode(ctx, 255)
|
|
},
|
|
expectedClosed: uint64(255)<<32 + 1,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
t.Run(fmt.Sprintf("%s calls ns.CloseWithExitCode(module.name))", tc.name), func(t *testing.T) {
|
|
for _, ctx := range []context.Context{nil, testCtx} { // Ensure it doesn't crash on nil!
|
|
moduleName := t.Name()
|
|
m, err := s.Instantiate(ctx, ns, &Module{}, moduleName, nil, nil)
|
|
require.NoError(t, err)
|
|
|
|
// We use side effects to see if Close called ns.CloseWithExitCode (without repeating store_test.go).
|
|
// One side effect of ns.CloseWithExitCode is that the moduleName can no longer be looked up.
|
|
require.Equal(t, ns.Module(moduleName), m)
|
|
|
|
// Closing should not err.
|
|
require.NoError(t, tc.closer(ctx, m))
|
|
|
|
require.Equal(t, tc.expectedClosed, *m.closed)
|
|
|
|
// Verify our intended side-effect
|
|
require.Nil(t, ns.Module(moduleName))
|
|
|
|
// Verify no error closing again.
|
|
require.NoError(t, tc.closer(ctx, m))
|
|
}
|
|
})
|
|
}
|
|
|
|
t.Run("calls Context.Close()", func(t *testing.T) {
|
|
sysCtx := sys.DefaultContext(testfs.FS{"foo": &testfs.File{}})
|
|
fsCtx := sysCtx.FS(testCtx)
|
|
|
|
_, err := fsCtx.OpenFile(testCtx, "/foo")
|
|
require.NoError(t, err)
|
|
|
|
m, err := s.Instantiate(context.Background(), ns, &Module{}, t.Name(), sysCtx, nil)
|
|
require.NoError(t, err)
|
|
|
|
// We use side effects to determine if Close in fact called Context.Close (without repeating sys_test.go).
|
|
// One side effect of Context.Close is that it clears the openedFiles map. Verify our base case.
|
|
_, ok := fsCtx.OpenedFile(testCtx, 3)
|
|
require.True(t, ok, "sysCtx.openedFiles was empty")
|
|
|
|
// Closing should not err.
|
|
require.NoError(t, m.Close(testCtx))
|
|
|
|
// Verify our intended side-effect
|
|
_, ok = fsCtx.OpenedFile(testCtx, 3)
|
|
require.False(t, ok, "expected no opened files")
|
|
|
|
// Verify no error closing again.
|
|
require.NoError(t, m.Close(testCtx))
|
|
})
|
|
|
|
t.Run("error closing", func(t *testing.T) {
|
|
// Right now, the only way to err closing the sys context is if a File.Close erred.
|
|
testFS := testfs.FS{"foo": &testfs.File{CloseErr: errors.New("error closing")}}
|
|
sysCtx := sys.DefaultContext(testFS)
|
|
fsCtx := sysCtx.FS(testCtx)
|
|
|
|
_, err := fsCtx.OpenFile(testCtx, "/foo")
|
|
require.NoError(t, err)
|
|
|
|
m, err := s.Instantiate(context.Background(), ns, &Module{}, t.Name(), sysCtx, nil)
|
|
require.NoError(t, err)
|
|
|
|
require.EqualError(t, m.Close(testCtx), "error closing")
|
|
|
|
// Verify our intended side-effect
|
|
_, ok := fsCtx.OpenedFile(testCtx, 3)
|
|
require.False(t, ok, "expected no opened files")
|
|
})
|
|
}
|