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diff --git a/Foundation/GTMURITemplateTest.m b/Foundation/GTMURITemplateTest.m
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+/* Copyright (c) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GTMURITemplate.h"
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
+
+#import "GTMSenTestCase.h"
+#import "GTMScriptRunner.h"
+
+@interface GTMURITemplateTest : GTMTestCase
+- (NSDictionary *)loadTestSuitesNamed:(NSString *)testSuitesName;
+- (NSDictionary *)parseJSONString:(NSString *)json error:(NSError **)error;
+- (void)runTestSuites:(NSDictionary *)testSuites;
+@end
+
+@implementation GTMURITemplateTest
+
+- (NSDictionary *)parseJSONString:(NSString *)json error:(NSError **)error {
+  NSDictionary *result = nil;
+
+  // If we ever get a JSON parser in GTM (or the system gets one, next cat?),
+  // then we can skip this conversion dance.
+
+  NSString *fileName = [NSString stringWithFormat:@"URITemplate_%u.plist", arc4random()];
+  NSString *tempOutPath = [NSTemporaryDirectory() stringByAppendingPathComponent:fileName];
+
+  GTMScriptRunner *runner = [GTMScriptRunner runnerWithPython];
+  NSString *command = [NSString stringWithFormat:
+                       @"import Foundation\n"
+                       @"import json\n"
+                       @"str_of_json = \"\"\"%@\"\"\"\n"
+                       @"Foundation.NSDictionary.dictionaryWithDictionary_(json.loads(str_of_json)).writeToFile_atomically_('%@', True)\n",
+                       json, tempOutPath];
+  NSString *errStr = nil;
+  NSString *outStr = [runner run:command standardError:&errStr];
+
+  STAssertNil(outStr, @"got something on stdout: %@", outStr);
+  STAssertNil(errStr, @"got something on stderr: %@", errStr);
+  result = [NSDictionary dictionaryWithContentsOfFile:tempOutPath];
+
+  [[NSFileManager defaultManager] removeItemAtPath:tempOutPath
+                                             error:NULL];
+
+  return result;
+}
+
+- (NSDictionary *)loadTestSuitesNamed:(NSString *)testSuitesName {
+  NSBundle *testBundle = [NSBundle bundleForClass:[self class]];
+  STAssertNotNil(testBundle, nil);
+
+  NSString *testSuitesPath = [testBundle pathForResource:testSuitesName
+                                                  ofType:nil];
+  STAssertNotNil(testSuitesPath, @"%@ not found", testSuitesName);
+
+  NSError *error = nil;
+  NSString *testSuitesStr = [NSString stringWithContentsOfFile:testSuitesPath
+                                                      encoding:NSUTF8StringEncoding
+                                                         error:&error];
+  STAssertNil(error, @"Loading %@, error %@", testSuitesName, error);
+  STAssertNotNil(testSuitesStr, @"Loading %@", testSuitesName);
+
+  NSDictionary *testSuites = [self parseJSONString:testSuitesStr
+                                             error:&error];
+  STAssertNil(error, @"Parsing %@, error %@", testSuitesName, error);
+  STAssertNotNil(testSuites, @"failed to parse");
+
+  return testSuites;
+}
+
+- (void)runTestSuites:(NSDictionary *)testSuites {
+  // The file holds a set of named suites...
+  for (NSString *suiteName in testSuites) {
+    NSDictionary *suite = [testSuites objectForKey:suiteName];
+    // Each suite has variables and test cases...
+    NSDictionary *vars = [suite objectForKey:@"variables"];
+    NSArray *testCases = [suite objectForKey:@"testcases"];
+    STAssertTrue([vars count] != 0, @"'%@' no variables?", suiteName);
+    STAssertTrue([testCases count] != 0, @"'%@' no testcases?", suiteName);
+    NSUInteger idx = 0;
+    for (NSArray *testCase in testCases) {
+      // Each case is an array of the template and value...
+      STAssertEquals([testCase count], (NSUInteger)2,
+                     @" test index %lu of '%@'", (unsigned long)idx, suiteName);
+
+      NSString *testTemplate = [testCase objectAtIndex:0];
+      NSString *expectedResult = [testCase objectAtIndex:1];
+
+      NSString *result = [GTMURITemplate expandTemplate:testTemplate
+                                                 values:vars];
+      STAssertEqualObjects(result, expectedResult,
+                           @"template was '%@' (index %lu of '%@')",
+                           testTemplate, (unsigned long)idx, suiteName);
+      ++idx;
+    }
+  }
+}
+
+- (void)testRFCSuite {
+  // All of the examples from the RFC are in the python impl source as json
+  // test data.  A copy is in the GTM tree as GTMURITemplateJSON.txt.  The
+  // original can be found at:
+  // http://code.google.com/p/uri-templates/source/browse/trunk/testdata.json
+  NSDictionary *testSuites = [self loadTestSuitesNamed:@"GTMURITemplateRFCTests.json"];
+  STAssertNotNil(testSuites, nil);
+  [self runTestSuites:testSuites];
+}
+
+- (void)testExtraSuite {
+  // These are follow up cases not explictly listed in the spec, but does
+  // as cases to confirm behaviors.  The list was sent to the w3c uri list
+  // for confirmation:
+  //   http://lists.w3.org/Archives/Public/uri/2010Sep/thread.html
+  NSDictionary *testSuites = [self loadTestSuitesNamed:@"GTMURITemplateExtraTests.json"];
+  STAssertNotNil(testSuites, nil);
+  [self runTestSuites:testSuites];
+}
+
+@end
+
+#endif  // MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5