Allow mocked messages to throw exceptions.

There is a confirmed bug in iOS 4.0 that prevents this from working in
the simulator although it works fine with the device.

Dupe filed: http://openradar.appspot.com/8237699

Classes/LRMocky.h

@@ -13,4 +13,5 @@
 // actions
 #import "LRReturnValueAction.h"
 #import "LRPerformBlockAction.h"
+#import "LRThrowExceptionAction.h"
 #import "LRConsecutiveCallAction.h"

Classes/LRMocky/LRThrowExceptionAction.h

@@ -0,0 +1,22 @@
+//
+//  LRThrowExceptionAction.h
+//  Mocky
+//
+//  Created by Luke Redpath on 27/07/2010.
+//  Copyright (c) 2010 LJR Software Limited. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "LRExpectationAction.h"
+
+@interface LRThrowExceptionAction : NSObject <LRExpectationAction> {
+  NSException *exceptionToThrow;
+}
+- (id)initWithException:(NSException *)exception;
+@end
+
+LRThrowExceptionAction *LRA_throwException(NSException *exception);
+
+#ifdef LRMOCKY_SHORTHAND
+#define throwException LRA_throwException
+#endif

Classes/LRMocky/LRThrowExceptionAction.m

@@ -0,0 +1,38 @@
+//
+//  LRThrowExceptionAction.m
+//  Mocky
+//
+//  Created by Luke Redpath on 27/07/2010.
+//  Copyright (c) 2010 LJR Software Limited. All rights reserved.
+//
+
+#import "LRThrowExceptionAction.h"
+
+
+@implementation LRThrowExceptionAction
+
+- (id)initWithException:(NSException *)exception;
+{
+  if (self = [super init]) {
+    exceptionToThrow = [exception retain];
+  }
+  return self;
+}
+
+- (void)dealloc 
+{
+  [exceptionToThrow release];
+  [super dealloc];
+}
+
+- (void)invoke:(NSInvocation *)invocation
+{
+  [exceptionToThrow raise];
+}
+
+@end
+
+LRThrowExceptionAction *LRA_throwException(NSException *exception)
+{
+  return [[[LRThrowExceptionAction alloc] initWithException:exception] autorelease];
+}

Mocky.xcodeproj/project.pbxproj

@@ -113,6 +113,7 @@
 		A34650D411F857680080B46B /* LRMockeryTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A34650D311F857680080B46B /* LRMockeryTest.m */; };
 		A3C707F811FDDFE0000D2A8C /* ExpectationActionsTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A3C707F711FDDFE0000D2A8C /* ExpectationActionsTest.m */; };
 		A3EE4EF711FE5D64002DA61D /* LRConsecutiveCallAction.m in Sources */ = {isa = PBXBuildFile; fileRef = A3EE4EF611FE5D64002DA61D /* LRConsecutiveCallAction.m */; };
+		A3EE4F1611FE6187002DA61D /* LRThrowExceptionAction.m in Sources */ = {isa = PBXBuildFile; fileRef = A3EE4F1511FE6187002DA61D /* LRThrowExceptionAction.m */; };
 		AA747D9F0F9514B9006C5449 /* Mocky_Prefix.pch in Headers */ = {isa = PBXBuildFile; fileRef = AA747D9E0F9514B9006C5449 /* Mocky_Prefix.pch */; };
 		AACBBE4A0F95108600F1A2B1 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = AACBBE490F95108600F1A2B1 /* Foundation.framework */; };
 /* End PBXBuildFile section */
@@ -237,6 +238,8 @@
 		A3C707F711FDDFE0000D2A8C /* ExpectationActionsTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ExpectationActionsTest.m; sourceTree = "<group>"; };
 		A3EE4EF511FE5D64002DA61D /* LRConsecutiveCallAction.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = LRConsecutiveCallAction.h; sourceTree = "<group>"; };
 		A3EE4EF611FE5D64002DA61D /* LRConsecutiveCallAction.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = LRConsecutiveCallAction.m; sourceTree = "<group>"; };
+		A3EE4F1411FE6187002DA61D /* LRThrowExceptionAction.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = LRThrowExceptionAction.h; sourceTree = "<group>"; };
+		A3EE4F1511FE6187002DA61D /* LRThrowExceptionAction.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = LRThrowExceptionAction.m; sourceTree = "<group>"; };
 		AA747D9E0F9514B9006C5449 /* Mocky_Prefix.pch */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Mocky_Prefix.pch; sourceTree = "<group>"; };
 		AACBBE490F95108600F1A2B1 /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
 		D2AAC07E0554694100DB518D /* libMocky.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libMocky.a; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -339,6 +342,8 @@
 				A301769711FDEEFC004828C5 /* LRReturnValueAction.m */,
 				A3EE4EF511FE5D64002DA61D /* LRConsecutiveCallAction.h */,
 				A3EE4EF611FE5D64002DA61D /* LRConsecutiveCallAction.m */,
+				A3EE4F1411FE6187002DA61D /* LRThrowExceptionAction.h */,
+				A3EE4F1511FE6187002DA61D /* LRThrowExceptionAction.m */,
 			);
 			name = Actions;
 			sourceTree = "<group>";
@@ -714,6 +719,7 @@
 				A34650D411F857680080B46B /* LRMockeryTest.m in Sources */,
 				A3C707F811FDDFE0000D2A8C /* ExpectationActionsTest.m in Sources */,
 				A3EE4EF711FE5D64002DA61D /* LRConsecutiveCallAction.m in Sources */,
+				A3EE4F1611FE6187002DA61D /* LRThrowExceptionAction.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

Tests/ExpectationActionsTest.m

@@ -115,4 +115,25 @@ - (void)testMocksCanReturnDifferentValuesOnConsecutiveCalls;
   assertThatInt((int)[testObject returnSomeValue], equalToInt(30));
 }
 
+- (void)testMocksCanThrowAnException;
+{
+  [context checking:^(LRExpectationBuilder *builder){
+    [allowing(testObject) doSomething]; [it will:throwException([NSException exceptionWithName:@"Test Exception" reason:nil userInfo:nil])];
+  }];
+
+  /**
+   * this will only pass using the iOS 4.0 Device SDK, it currently fails
+   * with the simulator SDK due to a runtime bug. rdar://8081169
+   * also see: http://openradar.appspot.com/8081169
+   */
+
+  @try {
+    [testObject doSomething];
+    STFail(@"Exception expected but none was thrown");
+  }
+  @catch (NSException *exception) {
+    assertThat([exception name], equalTo(@"Test Exception"));
+  }
+}
+
 @end