| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// Common definitions used for setting up the test environment. |
| library testing; |
| |
| import 'package:csslib/parser.dart'; |
| import 'package:csslib/visitor.dart'; |
| |
| export 'package:csslib/src/preprocessor_options.dart'; |
| |
| const simpleOptionsWithCheckedAndWarningsAsErrors = PreprocessorOptions( |
| useColors: false, |
| checked: true, |
| warningsAsErrors: true, |
| inputFile: 'memory'); |
| |
| const simpleOptions = |
| PreprocessorOptions(useColors: false, inputFile: 'memory'); |
| |
| const options = PreprocessorOptions( |
| useColors: false, warningsAsErrors: true, inputFile: 'memory'); |
| |
| /// Spin-up CSS parser in checked mode to detect any problematic CSS. Normally, |
| /// CSS will allow any property/value pairs regardless of validity; all of our |
| /// tests (by default) will ensure that the CSS is really valid. |
| StyleSheet parseCss(String cssInput, |
| {List<Message>? errors, PreprocessorOptions? opts}) => |
| parse(cssInput, |
| errors: errors, |
| options: opts ?? simpleOptionsWithCheckedAndWarningsAsErrors); |
| |
| /// Spin-up CSS parser in checked mode to detect any problematic CSS. Normally, |
| /// CSS will allow any property/value pairs regardless of validity; all of our |
| /// tests (by default) will ensure that the CSS is really valid. |
| StyleSheet compileCss(String cssInput, |
| {List<Message>? errors, |
| PreprocessorOptions? opts, |
| bool polyfill = false, |
| List<StyleSheet>? includes}) => |
| compile(cssInput, |
| errors: errors, |
| options: opts ?? simpleOptionsWithCheckedAndWarningsAsErrors, |
| polyfill: polyfill, |
| includes: includes); |
| |
| StyleSheet polyFillCompileCss(input, |
| {List<Message>? errors, PreprocessorOptions? opts}) => |
| compileCss(input as String, errors: errors, polyfill: true, opts: opts); |
| |
| /// CSS emitter walks the style sheet tree and emits readable CSS. |
| final _emitCss = CssPrinter(); |
| |
| /// Simple Visitor does nothing but walk tree. |
| final _cssVisitor = Visitor(); |
| |
| /// Pretty printer for CSS. |
| String prettyPrint(StyleSheet ss) { |
| // Walk the tree testing basic Vistor class. |
| walkTree(ss); |
| return (_emitCss..visitTree(ss, pretty: true)).toString(); |
| } |
| |
| /// Helper function to emit compact (non-pretty printed) CSS for suite test |
| /// comparsions. Spaces, new lines, etc. are reduced for easier comparsions of |
| /// expected suite test results. |
| String compactOutput(StyleSheet ss) { |
| walkTree(ss); |
| return (_emitCss..visitTree(ss, pretty: false)).toString(); |
| } |
| |
| /// Walks the style sheet tree does nothing; insures the basic walker works. |
| void walkTree(StyleSheet ss) { |
| _cssVisitor.visitTree(ss); |
| } |
| |
| String dumpTree(StyleSheet ss) => treeToDebugString(ss); |