1 files changed, 44 insertions, 0 deletions
diff --git a/test/ios/LocationMocker/CSSwizzler.m b/test/ios/LocationMocker/CSSwizzler.m
new file mode 100644
index 0000000000..70c5b12bc1
--- /dev/null
+++ b/test/ios/LocationMocker/CSSwizzler.m
@@ -0,0 +1,44 @@
+//
+// Based on gist by Eric Allam
+// https://gist.github.com/ericallam/5689235
+//
+
+#import "CSSwizzler.h"
+#import <objc/message.h>
+#import <objc/runtime.h>
+
+@implementation CSSwizzler
+
++ (void)swizzleClass:(id)cls
+ replaceClassMethod:(SEL)origMethodSelector
+         withMethod:(SEL)replacementMethodSelector;
+{
+    Method origMethod = nil, altMethod = nil;
+    origMethod = class_getClassMethod(cls, origMethodSelector);
+    altMethod = class_getClassMethod(cls, replacementMethodSelector);
+    method_exchangeImplementations(origMethod, altMethod);
+}
+
++ (void)swizzleClass:(id)cls
+      replaceMethod:(SEL)origMethodSelector
+         withMethod:(SEL)replacementMethodSelector;
+{
+    Method origMethod = nil, altMethod = nil;
+    origMethod = class_getInstanceMethod(cls, origMethodSelector);
+    altMethod = class_getInstanceMethod(cls, replacementMethodSelector);
+    method_exchangeImplementations(origMethod, altMethod);
+}
+
++ (void)swizzleClassOfInstance:(id)inst
+                replaceMethod:(SEL)origMethodSelector
+                   withMethod:(SEL)replacementMethodSelector;
+{
+    const char *str = [[[inst class] description] UTF8String];
+    Class cls = objc_getClass(str);
+    Method origMethod = nil, altMethod = nil;
+    origMethod = class_getInstanceMethod(cls, origMethodSelector);
+    altMethod = class_getInstanceMethod(cls, replacementMethodSelector);
+    method_exchangeImplementations(origMethod, altMethod);
+}
+
+@end