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// 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';
import 'package:csslib/src/messages.dart';
import 'package:csslib/src/options.dart';
export 'package:csslib/src/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 == null ? simpleOptionsWithCheckedAndWarningsAsErrors : opts);
/// 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 == null ? simpleOptionsWithCheckedAndWarningsAsErrors : opts,
polyfill: polyfill,
includes: includes);
StyleSheet polyFillCompileCss(input,
{List<Message> errors, PreprocessorOptions opts}) =>
compileCss(input, 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 compactOuptut(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);