1 files changed, 32 insertions, 0 deletions
diff --git a/Framework/MASDictionaryTransformerTests.m b/Framework/MASDictionaryTransformerTests.m
new file mode 100644
index 0000000..48e11f3
--- /dev/null
+++ b/Framework/MASDictionaryTransformerTests.m
@@ -0,0 +1,32 @@
+@interface MASDictionaryTransformerTests : XCTestCase
+@end
+
+@implementation MASDictionaryTransformerTests
+
+- (void) testErrorHandling
+{
+    MASDictionaryTransformer *transformer = [MASDictionaryTransformer new];
+    XCTAssertNil([transformer transformedValue:nil],
+        @"Decoding a shortcut from a nil dictionary returns nil.");
+    XCTAssertNil([transformer transformedValue:(id)@"foo"],
+        @"Decoding a shortcut from a invalid-type dictionary returns nil.");
+    XCTAssertNil([transformer transformedValue:@{}],
+        @"Decoding a shortcut from an empty dictionary returns nil.");
+    XCTAssertNil([transformer transformedValue:@{@"keyCode":@"foo"}],
+        @"Decoding a shortcut from a wrong-typed dictionary returns nil.");
+    XCTAssertNil([transformer transformedValue:@{@"keyCode":@1}],
+        @"Decoding a shortcut from an incomplete dictionary returns nil.");
+    XCTAssertNil([transformer transformedValue:@{@"modifierFlags":@1}],
+        @"Decoding a shortcut from an incomplete dictionary returns nil.");
+}
+
+- (void) testNilRepresentation
+{
+    MASDictionaryTransformer *transformer = [MASDictionaryTransformer new];
+    XCTAssertEqualObjects([transformer reverseTransformedValue:nil], [NSDictionary dictionary],
+        @"Store nil values as an empty dictionary.");
+    XCTAssertNil([transformer transformedValue:[NSDictionary dictionary]],
+        @"Load empty dictionary as nil.");
+}
+
+@end