Sanitize filenames before using a part of the test method

Author: jeffh

Quick/QuickSpec.m

@@ -103,10 +103,19 @@ + (SEL)addInstanceMethodForExample:(Example *)example {
         currentSpec = self;
         [example run];
     });
+    NSCharacterSet *characterSet = [NSCharacterSet alphanumericCharacterSet];
+    NSMutableString *sanitizedFileName = [NSMutableString string];
+    for (NSUInteger i = 0; i < example.callsite.file.length; i++) {
+        unichar ch = [example.callsite.file characterAtIndex:i];
+        if ([characterSet characterIsMember:ch]) {
+            [sanitizedFileName appendFormat:@"%c", ch];
+        }
+    }
+
     const char *types = [[NSString stringWithFormat:@"%s%s%s", @encode(id), @encode(id), @encode(SEL)] UTF8String];
     NSString *selectorName = [NSString stringWithFormat:@"%@_%@_%ld",
                               example.name.qck_selectorName,
-                              example.callsite.file,
+                              sanitizedFileName,
                               (long)example.callsite.line];
     SEL selector = NSSelectorFromString(selectorName);
     class_addMethod(self, selector, implementation, types);