106f96b066
This shows how to define, export and import functions written in Go. Fixes #464 Signed-off-by: Adrian Cole <adrian@tetrate.io> Co-authored-by: Takeshi Yoneda <takeshi@tetrate.io>
43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package wasi
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import (
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"bytes"
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_ "embed"
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"testing"
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"github.com/tetratelabs/wazero"
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"github.com/tetratelabs/wazero/internal/testing/require"
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)
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// wasiArg was compiled from testdata/wasi_arg.wat
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//go:embed testdata/wasi_arg.wasm
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var wasiArg []byte
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func TestInstantiateModuleWithConfig(t *testing.T) {
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r := wazero.NewRuntime()
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stdout := bytes.NewBuffer(nil)
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// Configure WASI to write stdout to a buffer, so that we can verify it later.
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sys := wazero.NewModuleConfig().WithStdout(stdout)
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wm, err := InstantiateSnapshotPreview1(r)
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require.NoError(t, err)
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defer wm.Close()
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compiled, err := r.CompileModule(wasiArg)
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require.NoError(t, err)
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defer compiled.Close()
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// Re-use the same module many times.
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for _, tc := range []string{"a", "b", "c"} {
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mod, err := r.InstantiateModuleWithConfig(compiled, sys.WithArgs(tc).WithName(tc))
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require.NoError(t, err)
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// Ensure the scoped configuration applied. As the args are null-terminated, we append zero (NUL).
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require.Equal(t, append([]byte(tc), 0), stdout.Bytes())
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stdout.Reset()
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require.NoError(t, mod.Close())
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}
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}
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