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packages/polymer/test/build/utils_test.dart

Index: packages/polymer/test/build/utils_test.dart
diff --git a/packages/polymer/test/build/utils_test.dart b/packages/polymer/test/build/utils_test.dart
new file mode 100644
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+++ b/packages/polymer/test/build/utils_test.dart
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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.
+
+/// Tests for some of the utility helper functions used by the compiler.
+library polymer.test.utils_test;
+
+import 'package:unittest/compact_vm_config.dart';
+import 'package:unittest/unittest.dart';
+import 'package:polymer/src/build/utils.dart';
+
+main() {
+  useCompactVMConfiguration();
+
+  for (bool startUppercase in [false, true]) {
+    Matcher caseEquals(String str) {
+      if (startUppercase) str = str[0].toUpperCase() + str.substring(1);
+      return equals(str);
+    }
+
+    camelCase(str) => toCamelCase(str, startUppercase: startUppercase);
+
+    group('toCamelCase startUppercase=$startUppercase', () {
+      test('empty', () {
+        expect(camelCase(''), equals(''));
+      });
+
+      test('single token', () {
+        expect(camelCase('a'), caseEquals('a'));
+        expect(camelCase('ab'), caseEquals('ab'));
+        expect(camelCase('Ab'), caseEquals('Ab'));
+        expect(camelCase('AB'), caseEquals('AB'));
+        expect(camelCase('long_word'), caseEquals('long_word'));
+      });
+
+      test('dashes in the middle', () {
+        expect(camelCase('a-b'), caseEquals('aB'));
+        expect(camelCase('a-B'), caseEquals('aB'));
+        expect(camelCase('A-b'), caseEquals('AB'));
+        expect(camelCase('long-word'), caseEquals('longWord'));
+      });
+
+      test('leading/trailing dashes', () {
+        expect(camelCase('-hi'), caseEquals('Hi'));
+        expect(camelCase('hi-'), caseEquals('hi'));
+        expect(camelCase('hi-friend-'), caseEquals('hiFriend'));
+      });
+
+      test('consecutive dashes', () {
+        expect(camelCase('--hi-friend'), caseEquals('HiFriend'));
+        expect(camelCase('hi--friend'), caseEquals('hiFriend'));
+        expect(camelCase('hi-friend--'), caseEquals('hiFriend'));
+      });
+    });
+  }
+
+  group('toHyphenedName', () {
+    test('empty', () {
+      expect(toHyphenedName(''), '');
+    });
+
+    test('all lower case', () {
+      expect(toHyphenedName('a'), 'a');
+      expect(toHyphenedName('a-b'), 'a-b');
+      expect(toHyphenedName('aBc'), 'a-bc');
+      expect(toHyphenedName('abC'), 'ab-c');
+      expect(toHyphenedName('abc-d'), 'abc-d');
+      expect(toHyphenedName('long_word'), 'long_word');
+    });
+
+    test('capitalized letters in the middle/end', () {
+      expect(toHyphenedName('aB'), 'a-b');
+      expect(toHyphenedName('longWord'), 'long-word');
+    });
+
+    test('leading capital letters', () {
+      expect(toHyphenedName('Hi'), 'hi');
+      expect(toHyphenedName('Hi-'), 'hi-');
+      expect(toHyphenedName('HiFriend'), 'hi-friend');
+    });
+
+    test('consecutive capital letters', () {
+      expect(toHyphenedName('aBC'), 'a-b-c');
+    });
+  });
+}