Add a unittest for ObjC TextFormat extension support.

Makefile.am

@@ -558,6 +558,7 @@ objectivec_EXTRA_DIST=                                                       \
   objectivec/Tests/GPBUtilitiesTests.m                                       \
   objectivec/Tests/GPBWellKnownTypesTest.m                                   \
   objectivec/Tests/GPBWireFormatTests.m                                      \
+  objectivec/Tests/text_format_extensions_unittest_data.txt                   \
   objectivec/Tests/text_format_map_unittest_data.txt                          \
   objectivec/Tests/text_format_unittest_data.txt                              \
   objectivec/Tests/unittest_cycle.proto                                       \

objectivec/ProtocolBuffers_OSX.xcodeproj/project.pbxproj

@@ -92,6 +92,7 @@
 		F4E675A11B21D0000054530B /* Struct.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675911B21D0000054530B /* Struct.pbobjc.m */; };
 		F4E675A31B21D0000054530B /* Type.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675931B21D0000054530B /* Type.pbobjc.m */; };
 		F4E675A51B21D0000054530B /* Wrappers.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675951B21D0000054530B /* Wrappers.pbobjc.m */; };
+		F4F53F8A219CC4F2001EABF4 /* text_format_extensions_unittest_data.txt in Resources */ = {isa = PBXBuildFile; fileRef = F4F53F89219CC4F2001EABF4 /* text_format_extensions_unittest_data.txt */; };
 		F4F8D8831D789FD9002CE128 /* GPBUnittestProtos2.m in Sources */ = {isa = PBXBuildFile; fileRef = F4F8D8811D789FCE002CE128 /* GPBUnittestProtos2.m */; };
 /* End PBXBuildFile section */
 
@@ -265,6 +266,7 @@
 		F4E675AB1B21D05C0054530B /* struct.proto */ = {isa = PBXFileReference; lastKnownFileType = text; name = struct.proto; path = ../src/google/protobuf/struct.proto; sourceTree = "<group>"; };
 		F4E675AC1B21D05C0054530B /* type.proto */ = {isa = PBXFileReference; lastKnownFileType = text; name = type.proto; path = ../src/google/protobuf/type.proto; sourceTree = "<group>"; };
 		F4E675AD1B21D05C0054530B /* wrappers.proto */ = {isa = PBXFileReference; lastKnownFileType = text; name = wrappers.proto; path = ../src/google/protobuf/wrappers.proto; sourceTree = "<group>"; };
+		F4F53F89219CC4F2001EABF4 /* text_format_extensions_unittest_data.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = text_format_extensions_unittest_data.txt; sourceTree = "<group>"; };
 		F4F8D8811D789FCE002CE128 /* GPBUnittestProtos2.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GPBUnittestProtos2.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -494,6 +496,7 @@
 				7461B6BA0F94FDF900A0C422 /* GPBUtilitiesTests.m */,
 				8B4248DB1A92933A00BC1EC6 /* GPBWellKnownTypesTest.m */,
 				7461B6BC0F94FDF900A0C422 /* GPBWireFormatTests.m */,
+				F4F53F89219CC4F2001EABF4 /* text_format_extensions_unittest_data.txt */,
 				F45E57C61AE6DC6A000B7D99 /* text_format_map_unittest_data.txt */,
 				F43C88CF191D77FC009E917D /* text_format_unittest_data.txt */,
 				8B7E6A7414893DBA00F8884A /* unittest_custom_options.proto */,
@@ -671,6 +674,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				8B210CCE159383D60032D72D /* golden_message in Resources */,
+				F4F53F8A219CC4F2001EABF4 /* text_format_extensions_unittest_data.txt in Resources */,
 				F43C88D0191D77FC009E917D /* text_format_unittest_data.txt in Resources */,
 				8B210CD0159386920032D72D /* golden_packed_fields_message in Resources */,
 				F45E57C71AE6DC6A000B7D99 /* text_format_map_unittest_data.txt in Resources */,

objectivec/ProtocolBuffers_iOS.xcodeproj/project.pbxproj

@@ -93,6 +93,7 @@
 		F4E675D51B21D1620054530B /* Struct.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675C21B21D1440054530B /* Struct.pbobjc.m */; };
 		F4E675D61B21D1620054530B /* Type.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675C51B21D1440054530B /* Type.pbobjc.m */; };
 		F4E675D71B21D1620054530B /* Wrappers.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = F4E675C71B21D1440054530B /* Wrappers.pbobjc.m */; };
+		F4F53F8C219CC5DF001EABF4 /* text_format_extensions_unittest_data.txt in Resources */ = {isa = PBXBuildFile; fileRef = F4F53F8B219CC5DF001EABF4 /* text_format_extensions_unittest_data.txt */; };
 		F4F8D8861D78A193002CE128 /* GPBUnittestProtos2.m in Sources */ = {isa = PBXBuildFile; fileRef = F4F8D8841D78A186002CE128 /* GPBUnittestProtos2.m */; };
 /* End PBXBuildFile section */
 
@@ -268,6 +269,7 @@
 		F4E675DD1B21D1DE0054530B /* struct.proto */ = {isa = PBXFileReference; lastKnownFileType = text; name = struct.proto; path = ../src/google/protobuf/struct.proto; sourceTree = "<group>"; };
 		F4E675DE1B21D1DE0054530B /* type.proto */ = {isa = PBXFileReference; lastKnownFileType = text; name = type.proto; path = ../src/google/protobuf/type.proto; sourceTree = "<group>"; };
 		F4E675DF1B21D1DE0054530B /* wrappers.proto */ = {isa = PBXFileReference; lastKnownFileType = text; name = wrappers.proto; path = ../src/google/protobuf/wrappers.proto; sourceTree = "<group>"; };
+		F4F53F8B219CC5DF001EABF4 /* text_format_extensions_unittest_data.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = text_format_extensions_unittest_data.txt; sourceTree = "<group>"; };
 		F4F8D8841D78A186002CE128 /* GPBUnittestProtos2.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GPBUnittestProtos2.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -500,6 +502,7 @@
 				7461B6BA0F94FDF900A0C422 /* GPBUtilitiesTests.m */,
 				8B4248E51A929C9900BC1EC6 /* GPBWellKnownTypesTest.m */,
 				7461B6BC0F94FDF900A0C422 /* GPBWireFormatTests.m */,
+				F4F53F8B219CC5DF001EABF4 /* text_format_extensions_unittest_data.txt */,
 				F45E57C81AE6DC98000B7D99 /* text_format_map_unittest_data.txt */,
 				F43C88CF191D77FC009E917D /* text_format_unittest_data.txt */,
 				8B7E6A7414893DBA00F8884A /* unittest_custom_options.proto */,
@@ -678,6 +681,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				8B210CCE159383D60032D72D /* golden_message in Resources */,
+				F4F53F8C219CC5DF001EABF4 /* text_format_extensions_unittest_data.txt in Resources */,
 				F43C88D0191D77FC009E917D /* text_format_unittest_data.txt in Resources */,
 				8B210CD0159386920032D72D /* golden_packed_fields_message in Resources */,
 				F45E57C91AE6DC98000B7D99 /* text_format_map_unittest_data.txt in Resources */,

objectivec/Tests/GPBUtilitiesTests.m

@@ -169,7 +169,27 @@
   [expected release];
 }
 
-// TODO(thomasvl): add test with extensions once those format with correct names.
+- (void)testTextFormatExtensions {
+  TestAllExtensions *message = [TestAllExtensions message];
+
+  // Not kGPBDefaultRepeatCount because we are comparing to golden master file
+  // which was generated with 2.
+  [self setAllExtensions:message repeatedCount:2];
+
+  NSString *result = GPBTextFormatForMessage(message, nil);
+
+  // NOTE: ObjC TextFormat doesn't have the proper extension names so it
+  // uses comments for the ObjC name and raw numbers for the fields instead
+  // of the bracketed extension name.
+  NSString *fileName = @"text_format_extensions_unittest_data.txt";
+  NSData *resultData = [result dataUsingEncoding:NSUTF8StringEncoding];
+  NSData *expectedData =
+      [self getDataFileNamed:fileName dataToWrite:resultData];
+  NSString *expected = [[NSString alloc] initWithData:expectedData
+                                             encoding:NSUTF8StringEncoding];
+  XCTAssertEqualObjects(expected, result);
+  [expected release];
+}
 
 - (void)testSetRepeatedFields {
   TestAllTypes *message = [TestAllTypes message];

objectivec/Tests/text_format_extensions_unittest_data.txt

@@ -0,0 +1,140 @@
+1: 101  # [UnittestRoot_optionalInt32Extension]
+2: 102  # [UnittestRoot_optionalInt64Extension]
+3: 103  # [UnittestRoot_optionalUint32Extension]
+4: 104  # [UnittestRoot_optionalUint64Extension]
+5: 105  # [UnittestRoot_optionalSint32Extension]
+6: 106  # [UnittestRoot_optionalSint64Extension]
+7: 107  # [UnittestRoot_optionalFixed32Extension]
+8: 108  # [UnittestRoot_optionalFixed64Extension]
+9: 109  # [UnittestRoot_optionalSfixed32Extension]
+10: 110  # [UnittestRoot_optionalSfixed64Extension]
+11: 111  # [UnittestRoot_optionalFloatExtension]
+12: 112  # [UnittestRoot_optionalDoubleExtension]
+13: true  # [UnittestRoot_optionalBoolExtension]
+14: "115"  # [UnittestRoot_optionalStringExtension]
+15: "\001\000\002\003\000\005"  # [UnittestRoot_optionalBytesExtension]
+16 {  # [UnittestRoot_optionalGroupExtension]
+  a: 117
+}
+18 {  # [UnittestRoot_optionalNestedMessageExtension]
+  bb: 118
+}
+19 {  # [UnittestRoot_optionalForeignMessageExtension]
+  c: 119
+}
+20 {  # [UnittestRoot_optionalImportMessageExtension]
+  d: 120
+}
+21: 3  # [UnittestRoot_optionalNestedEnumExtension]
+22: 6  # [UnittestRoot_optionalForeignEnumExtension]
+23: 9  # [UnittestRoot_optionalImportEnumExtension]
+24: "124"  # [UnittestRoot_optionalStringPieceExtension]
+25: "125"  # [UnittestRoot_optionalCordExtension]
+# [UnittestRoot_repeatedInt32Extension]
+31: 201
+31: 301
+# [UnittestRoot_repeatedInt64Extension]
+32: 202
+32: 302
+# [UnittestRoot_repeatedUint32Extension]
+33: 203
+33: 303
+# [UnittestRoot_repeatedUint64Extension]
+34: 204
+34: 304
+# [UnittestRoot_repeatedSint32Extension]
+35: 205
+35: 305
+# [UnittestRoot_repeatedSint64Extension]
+36: 206
+36: 306
+# [UnittestRoot_repeatedFixed32Extension]
+37: 207
+37: 307
+# [UnittestRoot_repeatedFixed64Extension]
+38: 208
+38: 308
+# [UnittestRoot_repeatedSfixed32Extension]
+39: 209
+39: 309
+# [UnittestRoot_repeatedSfixed64Extension]
+40: 210
+40: 310
+# [UnittestRoot_repeatedFloatExtension]
+41: 211
+41: 311
+# [UnittestRoot_repeatedDoubleExtension]
+42: 212
+42: 312
+# [UnittestRoot_repeatedBoolExtension]
+43: false
+43: true
+# [UnittestRoot_repeatedStringExtension]
+44: "215"
+44: "315"
+# [UnittestRoot_repeatedBytesExtension]
+45: "\330\000\000\000"
+45: "<\001\000\000"
+# [UnittestRoot_repeatedGroupExtension]
+46 {
+  a: 217
+}
+46 {
+  a: 317
+}
+# [UnittestRoot_repeatedNestedMessageExtension]
+48 {
+  bb: 218
+}
+48 {
+  bb: 318
+}
+# [UnittestRoot_repeatedForeignMessageExtension]
+49 {
+  c: 219
+}
+49 {
+  c: 319
+}
+# [UnittestRoot_repeatedImportMessageExtension]
+50 {
+  d: 220
+}
+50 {
+  d: 320
+}
+# [UnittestRoot_repeatedNestedEnumExtension]
+51: 3
+51: 2
+# [UnittestRoot_repeatedForeignEnumExtension]
+52: 6
+52: 5
+# [UnittestRoot_repeatedImportEnumExtension]
+53: 9
+53: 8
+# [UnittestRoot_repeatedStringPieceExtension]
+54: "224"
+54: "324"
+# [UnittestRoot_repeatedCordExtension]
+55: "225"
+55: "325"
+61: 401  # [UnittestRoot_defaultInt32Extension]
+62: 402  # [UnittestRoot_defaultInt64Extension]
+63: 403  # [UnittestRoot_defaultUint32Extension]
+64: 404  # [UnittestRoot_defaultUint64Extension]
+65: 405  # [UnittestRoot_defaultSint32Extension]
+66: 406  # [UnittestRoot_defaultSint64Extension]
+67: 407  # [UnittestRoot_defaultFixed32Extension]
+68: 408  # [UnittestRoot_defaultFixed64Extension]
+69: 409  # [UnittestRoot_defaultSfixed32Extension]
+70: 410  # [UnittestRoot_defaultSfixed64Extension]
+71: 411  # [UnittestRoot_defaultFloatExtension]
+72: 412  # [UnittestRoot_defaultDoubleExtension]
+73: false  # [UnittestRoot_defaultBoolExtension]
+74: "415"  # [UnittestRoot_defaultStringExtension]
+75: "\240\001\000\000"  # [UnittestRoot_defaultBytesExtension]
+81: 1  # [UnittestRoot_defaultNestedEnumExtension]
+82: 4  # [UnittestRoot_defaultForeignEnumExtension]
+83: 7  # [UnittestRoot_defaultImportEnumExtension]
+84: "424"  # [UnittestRoot_defaultStringPieceExtension]
+85: "425"  # [UnittestRoot_defaultCordExtension]