Index: example/format.dart |
diff --git a/example/format.dart b/example/format.dart |
index f41327f1879dde264855b0218871b44ab9d6f536..4eec856e6d1528540f1c9cc48a1625acc52f2074 100644 |
--- a/example/format.dart |
+++ b/example/format.dart |
@@ -2,34 +2,34 @@ |
// 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. |
-import 'package:dart_style/dart_style.dart'; |
+library dart_style.example.format; |
+ |
+import 'dart:io'; |
+import 'dart:mirrors'; |
+ |
+import 'package:path/path.dart' as p; |
+import 'package:dart_style/dart_style.dart'; |
import 'package:dart_style/src/debug.dart' as debug; |
void main(List<String> args) { |
// Enable debugging so you can see some of the formatter's internal state. |
// Normal users do not do this. |
debug.traceChunkBuilder = true; |
- //debug.traceLineWriter = true; |
- //debug.traceSplitter = true; |
+ debug.traceLineWriter = true; |
+ debug.traceSplitter = true; |
debug.useAnsiColors = true; |
- formatStmt(""" |
- init({@Option( |
- help: 'The git Uri containing the jefe.yaml.', |
- abbr: 'g') String gitUri, @Option( |
- help: 'The directory to install into', |
- abbr: 'd') String installDirectory: '.', @Flag( |
- help: 'Skips the checkout of the develop branch', |
- abbr: 's') bool skipCheckout: false}) async {} |
-""", 80); |
+ runTest("regression/0000/0068.stmt", 14); |
+ |
+ formatStmt("hello(world);"); |
} |
-void formatStmt(String source, [int pageWidth = 40]) { |
+void formatStmt(String source, [int pageWidth = 80]) { |
runFormatter(source, pageWidth, isCompilationUnit: false); |
} |
-void formatUnit(String source, [int pageWidth = 40]) { |
+void formatUnit(String source, [int pageWidth = 80]) { |
runFormatter(source, pageWidth, isCompilationUnit: true); |
} |
@@ -61,3 +61,109 @@ void drawRuler(String label, int width) { |
var padding = " " * (width - label.length - 1); |
print("$label:$padding|"); |
} |
+ |
+/// Runs the formatter test starting on [line] at [path] inside the "test" |
+/// directory. |
+void runTest(String path, int line) { |
+ var indentPattern = new RegExp(r"^\(indent (\d+)\)\s*"); |
+ |
+ // Locate the "test" directory. Use mirrors so that this works with the test |
+ // package, which loads this suite into an isolate. |
+ var testDir = p.join( |
+ p.dirname(currentMirrorSystem() |
+ .findLibrary(#dart_style.example.format) |
+ .uri |
+ .path), |
+ "../test"); |
+ |
+ var lines = new File(p.join(testDir, path)).readAsLinesSync(); |
+ |
+ // The first line may have a "|" to indicate the page width. |
+ var pageWidth = 80; |
+ if (lines[0].endsWith("|")) { |
+ pageWidth = lines[0].indexOf("|"); |
+ lines = lines.skip(1).toList(); |
+ } |
+ |
+ var i = 0; |
+ while (i < lines.length) { |
+ var description = lines[i++].replaceAll(">>>", "").trim(); |
+ |
+ // Let the test specify a leading indentation. This is handy for |
+ // regression tests which often come from a chunk of nested code. |
+ var leadingIndent = 0; |
+ var indentMatch = indentPattern.firstMatch(description); |
+ if (indentMatch != null) { |
+ leadingIndent = int.parse(indentMatch[1]); |
+ description = description.substring(indentMatch.end); |
+ } |
+ |
+ if (description == "") { |
+ description = "line ${i + 1}"; |
+ } else { |
+ description = "line ${i + 1}: $description"; |
+ } |
+ var startLine = i + 1; |
+ |
+ var input = ""; |
+ while (!lines[i].startsWith("<<<")) { |
+ input += lines[i++] + "\n"; |
+ } |
+ |
+ var expectedOutput = ""; |
+ while (++i < lines.length && !lines[i].startsWith(">>>")) { |
+ expectedOutput += lines[i] + "\n"; |
+ } |
+ |
+ if (line != startLine) continue; |
+ |
+ var isCompilationUnit = p.extension(path) == ".unit"; |
+ |
+ var inputCode = |
+ _extractSelection(input, isCompilationUnit: isCompilationUnit); |
+ |
+ var expected = |
+ _extractSelection(expectedOutput, isCompilationUnit: isCompilationUnit); |
+ |
+ var formatter = |
+ new DartFormatter(pageWidth: pageWidth, indent: leadingIndent); |
+ |
+ var actual = formatter.formatSource(inputCode); |
+ |
+ // The test files always put a newline at the end of the expectation. |
+ // Statements from the formatter (correctly) don't have that, so add |
+ // one to line up with the expected result. |
+ var actualText = actual.text; |
+ if (!isCompilationUnit) actualText += "\n"; |
+ |
+ print("$path $description"); |
+ drawRuler("before", pageWidth); |
+ print(input); |
+ if (actualText == expected.text) { |
+ drawRuler("result", pageWidth); |
+ print(actualText); |
+ } else { |
+ print("FAIL"); |
+ drawRuler("expected", pageWidth); |
+ print(expected.text); |
+ drawRuler("actual", pageWidth); |
+ print(actualText); |
+ } |
+ } |
+} |
+ |
+/// Given a source string that contains ‹ and › to indicate a selection, returns |
+/// a [SourceCode] with the text (with the selection markers removed) and the |
+/// correct selection range. |
+SourceCode _extractSelection(String source, {bool isCompilationUnit: false}) { |
+ var start = source.indexOf("‹"); |
+ source = source.replaceAll("‹", ""); |
+ |
+ var end = source.indexOf("›"); |
+ source = source.replaceAll("›", ""); |
+ |
+ return new SourceCode(source, |
+ isCompilationUnit: isCompilationUnit, |
+ selectionStart: start == -1 ? null : start, |
+ selectionLength: end == -1 ? null : end - start); |
+} |