939403c10b
This simplifies FunctionListener definition by making it possible to implement both interfaces without intermediate state. Passing the function definition to the before/after callbacks is the key. This also continues efforts towards Go 1.19 doc formatting. Signed-off-by: Adrian Cole <adrian@tetrate.io>
49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
package emscripten
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import (
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"bytes"
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"context"
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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/experimental"
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"github.com/tetratelabs/wazero/experimental/logging"
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"github.com/tetratelabs/wazero/internal/testing/require"
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"github.com/tetratelabs/wazero/sys"
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"github.com/tetratelabs/wazero/wasi_snapshot_preview1"
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)
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// growWasm was compiled from testdata/grow.cc
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//
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//go:embed testdata/grow.wasm
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var growWasm []byte
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// testCtx is an arbitrary, non-default context. Non-nil also prevents linter errors.
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var testCtx = context.WithValue(context.Background(), struct{}{}, "arbitrary")
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// TestGrow is an integration test until we have an Emscripten example.
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func TestGrow(t *testing.T) {
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var log bytes.Buffer
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// Set context to one that has an experimental listener
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ctx := context.WithValue(testCtx, FunctionListenerFactoryKey{}, logging.NewLoggingListenerFactory(&log))
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r := wazero.NewRuntimeWithConfig(wazero.NewRuntimeConfigInterpreter())
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defer r.Close(ctx)
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_, err := wasi_snapshot_preview1.Instantiate(ctx, r)
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require.NoError(t, err)
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_, err = Instantiate(ctx, r)
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require.NoError(t, err)
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// Emscripten exits main with zero by default
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_, err = r.InstantiateModuleFromBinary(ctx, growWasm)
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require.Error(t, err)
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require.Zero(t, err.(*sys.ExitError).ExitCode())
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// We expect the memory no-op memory growth hook to be invoked as wasm.
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require.Contains(t, log.String(), "--> env.emscripten_notify_memory_growth(memory_index=0)")
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}
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