Lint to test for private/implementation imports.

test/rule_test.dart

 // Copyright (c) 2015, 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.
 
 library linter.test.rule;
 
 import 'dart:io';
 
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:linter/src/ast.dart';
 import 'package:linter/src/io.dart';
 import 'package:linter/src/linter.dart';
 import 'package:linter/src/rules.dart';
 import 'package:linter/src/rules/camel_case_types.dart';
+import 'package:linter/src/rules/implementation_imports.dart';
 import 'package:linter/src/rules/package_prefixed_library_names.dart';
 import 'package:linter/src/util.dart';
 import 'package:path/path.dart' as p;
 import 'package:unittest/unittest.dart';
 
 main() {
   groupSep = ' | ';
 
   defineSanityTests();
   defineRuleTests();
@@ skipping 21 matching lines @@
           if (file is! File || !isPubspecFile(file)) continue;
           var ruleName = p.basename(pubTestDir.path);
           testRule(ruleName, file);
         }
       }
     });
   });
 }
 
 defineRuleUnitTests() {
+  group('uris', () {
+    group('isPackage', () {
+      var uris = [
+        Uri.parse('package:foo/src/bar.dart'),
+        Uri.parse('package:foo/src/baz/bar.dart')
+      ];
+      uris.forEach((uri) {
+        test(uri.toString(), () {
+          expect(isPackage(uri), isTrue);
+        });
+      });
+      var uris2 = [
+        Uri.parse('foo/bar.dart'),
+        Uri.parse('src/bar.dart'),
+        Uri.parse('dart:async')
+      ];
+      uris2.forEach((uri) {
+        test(uri.toString(), () {
+          expect(isPackage(uri), isFalse);
+        });
+      });
+    });
+
+    group('samePackage', () {
+      test('identity', () {
+        expect(
+            samePackage(Uri.parse('package:foo/src/bar.dart'),
+                Uri.parse('package:foo/src/bar.dart')),
+            isTrue);
+      });
+      test('foo/bar.dart', () {
+        expect(
+            samePackage(Uri.parse('package:foo/src/bar.dart'),
+                Uri.parse('package:foo/bar.dart')),
+            isTrue);
+      });
+    });
+
+    group('implementation', () {
+      var uris = [
+        Uri.parse('package:foo/src/bar.dart'),
+        Uri.parse('package:foo/src/baz/bar.dart')
+      ];
+      uris.forEach((uri) {
+        test(uri.toString(), () {
+          expect(isImplementation(uri), isTrue);
+        });
+      });
+      var uris2 = [
+        Uri.parse('package:foo/bar.dart'),
+        Uri.parse('src/bar.dart')
+      ];
+      uris2.forEach((uri) {
+        test(uri.toString(), () {
+          expect(isImplementation(uri), isFalse);
+        });
+      });
+    });
+  });
+
   group('names', () {
     group('keywords', () {
       var good = ['class', 'if', 'assert', 'catch', 'import'];
       testEach(good, isKeyWord, isTrue);
       var bad = ['_class', 'iff', 'assert_', 'Catch'];
       testEach(bad, isKeyWord, isFalse);
     });
     group('identifiers', () {
       var good = ['foo', '_if', '_', 'f2', 'fooBar', 'foo_bar'];
       testEach(good, isValidDartIdentifier, isTrue);
@@ skipping 289 matching lines @@
     if (_expected.column != null) {
       if (_expected.column != other.column ||
           _expected.length != other.length) {
         return false;
       }
     }
     return _expected.type == other.type &&
         _expected.lineNumber == other.lineNumber;
   }
 }