Function TestParser

tools/nvidia_driver_differ/driver_ast_parser_test.go:33–154

TestParser runs driver_ast_parser on test_struct.cc and compares the output to the expected json.

(t *testing.T)

// TestParser runs driver_ast_parser on test_struct.cc and compares the output to the expected json.
func TestParser(t *testing.T) {
	driverParser, err := testutil.FindFile("tools/nvidia_driver_differ/driver_ast_parser")
	if err != nil {
		t.Fatalf("failed to find driver_ast_parser: %v", err)
	}

	testStructFile, err := testutil.FindFile("tools/nvidia_driver_differ/test_struct.cc")
	if err != nil {
		t.Fatalf("failed to find test_struct.cc: %v", err)
	}

	// Write a file containing the struct name we want to parse.
	inputFile, err := os.CreateTemp(os.TempDir(), "input.*.json")
	if err != nil {
		t.Fatalf("failed to create input file: %v", err)
	}
	defer func() {
		if err := inputFile.Close(); err != nil {
			t.Fatalf("failed to close input file: %v", err)
		}
		if err := os.Remove(inputFile.Name()); err != nil {
			t.Fatalf("failed to remove input file: %v", err)
		}
	}()

	input := parser.InputJSON{
		Structs: []string{"TestStruct", "TestStruct2"},
		Constants: []string{
			"VAR_CONSTANT_MACRO",
			"VAR_ADDITION_MACRO",
			"VAR_UNSIGNED_HEX_MACRO",
			"VAR_PARENTHESIZED_HEX_MACRO",
			"VAR_USES_FUNCTION_MACRO",
		},
	}
	if err := json.NewEncoder(inputFile).Encode(&input); err != nil {
		t.Fatalf("failed to write input input file: %v", err)
	}
	inputFile.Sync()

	cmd := exec.Command(driverParser, "--input", inputFile.Name(), testStructFile)
	var stderr strings.Builder
	cmd.Stderr = &stderr
	out, err := cmd.Output()
	if err != nil {
		t.Fatalf("failed to run driver_ast_parser: %v\n%s", err, stderr.String())
	}
	if stderr.Len() > 0 {
		t.Logf("driver_ast_parser stderr:\n%s", stderr.String())
	}

	outputJSON := parser.OutputJSON{}
	if err := json.Unmarshal(out, &outputJSON); err != nil {
		t.Fatalf("failed to unmarshal output %s: %v", string(out), err)
	}
	expectedOutput := parser.OutputJSON{
		Records: parser.RecordDefs{
			"TestStruct": parser.RecordDef{