A proper test of the precondition method

paytonrules · Mar 26, 2012 · 62096ea · 62096ea
1 parent f051d99
commit 62096ea
Showing 1 changed file with 44 additions and 53 deletions.
diff --git a/Specs/OCDSpecDescriptionSpec.m b/Specs/OCDSpecDescriptionSpec.m
@@ -4,32 +4,37 @@
 #import "OCDSpec/OCDSpecDescription.h"
 
 CONTEXT(OCDSpecDescription){
+  __block OCDSpecDescription *description;
+  __block OCDSpecOutputter *outputter;
+
   describe(@"The Description",
-          it(@"describes one example without errors", ^{
-            OCDSpecDescription *description = [[OCDSpecDescription alloc] init] ;
 
-            [description describe:@"It Should Do Something" onArrayOfExamples:[[NSArray alloc] init] ];
+          beforeEach(^{
+            description = [[OCDSpecDescription alloc] init];
+            outputter = [OCDSpecOutputter sharedOutputter];
+            outputter.fileHandle = [NSFileHandle fileHandleWithNullDevice];
+          }),
+
+          afterEach(^{
+            outputter.fileHandle = [NSFileHandle fileHandleWithStandardError];
+          }),
+
+          it(@"describes one example without errors", ^{
+            [description describe:@"It Should Do Something" onArrayOfExamples:[[NSArray alloc] init]];
 
             [expect(description.failures) toBeEqualTo:[NSNumber numberWithInt:0]];
           }),
 
           it(@"describes an example with one error", ^{
-            OCDSpecDescription *description = [[OCDSpecDescription alloc] init];
-            OCDSpecOutputter *outputter = [OCDSpecOutputter sharedOutputter];
-            outputter.fileHandle = [NSFileHandle fileHandleWithNullDevice];
-
             MockExample *example = [MockExample exampleThatFailed];
             NSArray *examples = [NSArray arrayWithObjects:example, nil];
 
             [description describe:@"It Should Do Something" onArrayOfExamples:examples];
 
-            outputter.fileHandle = [NSFileHandle fileHandleWithStandardError];
-
             [expect(description.failures) toBeEqualTo:[NSNumber numberWithInt:1]];
           }),
 
           it(@"writes the exceptions to the shared outputter", ^{
-            OCDSpecDescription *description = [[OCDSpecDescription alloc] init];
             __block NSString *outputException;
             [OCDSpecOutputter withRedirectedOutput:^{
               OCDSpecExample *example = [[OCDSpecExample alloc] initWithBlock:^{
@@ -49,10 +54,6 @@
           }),
 
           it(@"can describe multiple examples", ^{
-            OCDSpecDescription *description = [[OCDSpecDescription alloc] init];
-            OCDSpecOutputter *outputter = [OCDSpecOutputter sharedOutputter];
-            outputter.fileHandle = [NSFileHandle fileHandleWithNullDevice];
-
             OCDSpecExample *exampleOne = [[OCDSpecExample alloc] initWithBlock:^{
               FAIL(@"Fail One");
             }];
@@ -64,16 +65,10 @@
 
             [description describe:@"It Should Do Something" onArrayOfExamples:tests];
 
-            outputter.fileHandle = [NSFileHandle fileHandleWithStandardError];
-
             [expect(description.failures) toBeEqualTo:[NSNumber numberWithInt:2]];
           }),
 
           it(@"can describe multiple successes", ^{
-            OCDSpecDescription *description = [[OCDSpecDescription alloc] init];
-            OCDSpecOutputter *outputter = [OCDSpecOutputter sharedOutputter];
-            outputter.fileHandle = [NSFileHandle fileHandleWithNullDevice];
-
             OCDSpecExample *exampleOne = [[OCDSpecExample alloc] initWithBlock:^{
             }];
             OCDSpecExample *exampleTwo = [[OCDSpecExample alloc] initWithBlock:^{
@@ -83,18 +78,40 @@
 
             [description describe:@"It Should Do Something" onArrayOfExamples:tests];
 
-            outputter.fileHandle = [NSFileHandle fileHandleWithStandardError];
-
             [expect(description.successes) toBeEqualTo:[NSNumber numberWithInt:2]];
           }),
 
+          it(@"runs a precondition before each example", ^{
+            __block NSMutableArray *callsMade = [[NSMutableArray alloc] init];
+
+            OCDSpecExample *exampleOne = [[OCDSpecExample alloc] initWithBlock:^{
+              [callsMade addObject:@"Ran First Example"];
+            }];
+            OCDSpecExample *exampleTwo = [[OCDSpecExample alloc] initWithBlock:^{
+              [callsMade addObject:@"Ran Second Example"];
+            }];
+
+            NSArray *tests = [NSArray arrayWithObjects:exampleOne, exampleTwo, nil];
+
+            OCDSpecDescription *description = [[OCDSpecDescription alloc] initWithName:@"Something" examples:tests];
+            description.precondition = ^{
+              [callsMade addObject:@"Precondition Called"];
+            };
+            [description describe];
+
+            [expect(callsMade) toBeEqualTo:[NSArray arrayWithObjects:@"Precondition Called",
+                                                                     @"Ran First Example",
+                                                                     @"Precondition Called",
+                                                                     @"Ran Second Example",
+                                                                     nil ]];
+          }),
+
           it(@"Will still run the postcondition even if the example throws an exception", ^{
             __block bool calledPost = NO;
 
-            OCDSpecExample *exampleGoBoom = [[OCDSpecExample alloc] initWithBlock:
-                    ^{
-                      [NSException raise:@"OH NO" format:@"This is a test exception"];
-                    }];
+            OCDSpecExample *exampleGoBoom = [[OCDSpecExample alloc] initWithBlock:^{
+              [NSException raise:@"OH NO" format:@"This is a test exception"];
+            }];
 
             NSArray *tests = [NSArray arrayWithObject:exampleGoBoom];
 
@@ -114,30 +131,4 @@
 
           nil
   );
-}
-
-
-
-CONTEXT(DescribeMethodWithBeforeAndAfter){
-  __block int beforeCounter = 0;
-  __block int afterCounter = 0;
-
-  describe(@"The before each on describe",
-          beforeEach(^{
-            beforeCounter++;
-          }),
-
-          afterEach(^{
-            afterCounter++;
-          }),
-
-          it(@"calls before each before the example", ^{
-            [expect([NSNumber numberWithInteger:beforeCounter]) toBeEqualTo:[NSNumber numberWithInt:1]];
-          }),
-
-          it(@"calls after each after each example", ^{
-            [expect([NSNumber numberWithInteger:afterCounter]) toBeEqualTo:[NSNumber numberWithInt:1]];
-          }),
-          nil
-  );
-}
+}