Stephen Adams
6d347961b2
Also simplify use of JavaScriptPrintingOptions. Change-Id: Icdb603edd76b71dbc4a5d913407b96e5e9589265 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/452223 Reviewed-by: Mayank Patke <fishythefish@google.com> Commit-Queue: Stephen Adams <sra@google.com>
65 lines
2.0 KiB
Dart
65 lines
2.0 KiB
Dart
// Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:expect/expect.dart';
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import 'package:js_ast/js_ast.dart';
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/// Supports three calling patterns:
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///
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/// testExpression(template)
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/// testExpression(template, expected)
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/// testExpression(template, arguments, expected)
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///
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/// `template` is a String, possibly containing `#` placeholders.
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/// `arguments` can be a String, but only when `expected` is provided.
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Node testExpression(String expression, [optional1, String? optional2]) {
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return _test(js.call, expression, optional1, optional2);
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}
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/// Supports three calling patterns:
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///
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/// testStatement(template)
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/// testStatement(template, expected)
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/// testStatement(template, arguments, expected)
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///
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/// `template` is a String, possibly containing `#` placeholders.
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/// `arguments` can be a String, but only when `expected` is provided.
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Node testStatement(String expression, [optional1, String? optional2]) {
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return _test(js.statement, expression, optional1, optional2);
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}
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Node _test(
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Node Function(String, Object?) parse,
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String expression,
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optional1,
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String? optional2,
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) {
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final String expected;
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final Object? arguments; // null, List, or Map.
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if (optional2 is String) {
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expected = optional2;
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arguments = optional1 ?? const [];
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} else if (optional1 is String) {
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expected = optional1;
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arguments = const [];
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} else {
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expected = expression;
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arguments = optional1;
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}
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Node node = parse(expression, arguments);
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String jsText = prettyPrint(node);
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Expect.stringEquals(expected.trim(), jsText.trim());
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return node;
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}
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String prettyPrint(Node node) {
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JavaScriptPrintingOptions options = JavaScriptPrintingOptions();
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SimpleJavaScriptPrintingContext context = SimpleJavaScriptPrintingContext();
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Printer printer = Printer(options, context);
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printer.visit(node);
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return context.getText();
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}
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