Function TestWasmExportJS

main_test.go:801–841

Test //go:wasmexport in JavaScript (using NodeJS).

(t *testing.T)

// Test //go:wasmexport in JavaScript (using NodeJS).
func TestWasmExportJS(t *testing.T) {
	t.Parallel()
	type testCase struct {
		name      string
		buildMode string
	}

	tests := []testCase{
		{name: "default"},
		{name: "c-shared", buildMode: "c-shared"},
	}
	for _, tc := range tests {
		tc := tc
		t.Run(tc.name, func(t *testing.T) {
			t.Parallel()
			// Build the wasm binary.
			tmpdir := t.TempDir()
			options := optionsFromTarget("wasm", sema)
			options.BuildMode = tc.buildMode
			buildConfig, err := builder.NewConfig(&options)
			if err != nil {
				t.Fatal(err)
			}
			result, err := builder.Build("testdata/wasmexport-noscheduler.go", ".wasm", tmpdir, buildConfig)
			if err != nil {
				t.Fatal("failed to build binary:", err)
			}

			// Test the resulting binary using NodeJS.
			output := &bytes.Buffer{}
			cmd := exec.Command("node", "testdata/wasmexport.js", result.Binary, buildConfig.BuildMode())
			cmd.Stdout = output
			cmd.Stderr = output
			err = cmd.Run()
			if err != nil {
				t.Error("failed to run node:", err)
			}
			checkOutput(t, "testdata/wasmexport.txt", output.Bytes())
		})
	}
}

// Test whether Go.run() (in wasm_exec.js) normally returns and returns the
// right exit code.