adds NSNumber handling

Author: Oliver Mason

CMDQueryStringSerialization/CMDQueryStringSerialization.m

@@ -22,6 +22,12 @@ - (void)cmd_addObject:(id)object forKey:(NSString *)key;
 
 @end
 
+@interface NSNumber (CMDQueryStringSerialization)
+
+-(NSString*) cmd_stringByAddingEscapes;
+
+@end
+
 @implementation CMDQueryStringSerialization
 
 + (NSDictionary *)dictionaryWithQueryString:(NSString *)string {
@@ -120,3 +126,12 @@ - (void)cmd_addObject:(id)object forKey:(NSString *)key {
 }
 
 @end
+
+@implementation NSNumber (CMDQueryStringSerialization)
+
+-(NSString*) cmd_stringByAddingEscapes {
+    NSString *tmp = [NSString stringWithFormat:@"%@",self];
+    return [tmp cmd_stringByAddingEscapes];
+}
+
+@end

CMDQueryStringSerializationTests/CMDQueryStringSerializationTests.m

@@ -143,4 +143,11 @@ - (void)testDictionaryWithUnserializableValue {
     XCTAssertThrowsSpecificNamed([CMDQueryStringSerialization queryStringWithDictionary:desiredDictionary], NSException, NSInvalidArgumentException);
 }
 
+-(void)testDictionaryWithNumber {
+    NSDictionary *desiredDictionary = @{ @"key": @(13)};
+    NSString *desiredString = @"key=13";
+    
+    NSString *actualString = [CMDQueryStringSerialization queryStringWithDictionary:desiredDictionary];
+    XCTAssertEqualObjects(actualString, desiredString, @"Query parameters are incorrect.");
+}
 @end