tests := []struct {
		CaseName
		makeInput func() any // Function to create input value
		want      string     // Expected JSON output
	}{{
		// Both S1 and S2 have a field named X. From the perspective of S,
		// it is ambiguous which one X refers to.
		// This should not serialize either field.
		CaseName: Name("AmbiguousField"),
		makeInput: func() any {
			type (
				S1 struct{ x, X int }

		wantErr  error
	}{{
		input:   makeInput(FormatUnknown, ""),
		wantErr: ErrHeader,
	}, {
		input:    makeInput(FormatGNU, "1234", "fewa"),
		wantSize: 01234,
		wantErr:  ErrHeader,
	}, {
		input:    makeInput(FormatGNU, "0031"),
		wantSize: 031,
	}, {
		input:   makeInput(FormatGNU, "80"),
		wantErr: ErrHeader,
	}, {
		input: makeInput(FormatGNU, "1234",

}

TEST_F(PjRtExecutionUtilTest, PopulateCtxOutputs) {
  XlaOpRegistry::RegisterCompilationKernels();
  TF_EXPECT_OK(NodeDefBuilder("AddV2", "AddV2")
                   .Input(FakeInput(DT_INT32))
                   .Input(FakeInput(DT_INT32))
                   .Attr("T", DT_INT32)
                   .Device("/job:localhost/replica:0/task:0/device:XLA_CPU:0")
                   .Finalize(node_def()));
  TF_EXPECT_OK(InitOp());

  EXPECT_TRUE(xla_executable == nullptr);
}

TEST_F(OpsTestBase, CompileSingleOpSuccess) {
  TF_EXPECT_OK(NodeDefBuilder("identity_op", "Identity")
                   .Input(FakeInput(DT_FLOAT))
                   .Attr("T", DT_FLOAT)
                   .Finalize(node_def()));
  TF_EXPECT_OK(InitOp());
  AddInputFromArray<float>(TensorShape({1, 2}), {6.9, 4.2});
  TF_EXPECT_OK(RunOpKernel());