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Adds methods to JSONHelper to read boolean values.

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This commit is contained in:
Tom Hicks
2020-09-17 00:32:53 -07:00
parent 4a1145fd28
commit 9bf1595f29
3 changed files with 122 additions and 0 deletions
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4
MonsterCards/Helpers/JSONHelper.h
View File

@@ -18,6 +18,8 @@ NS_ASSUME_NONNULL_BEGIN
+(NSNumber*)readNumberFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key withDefaultValue:(NSNumber* _Nullable)defaultValue;
+(int)readIntFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key;
+(int)readIntFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key withDefaultValue:(int)defaultValue;
+(BOOL)readBoolFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key;
+(BOOL)readBoolFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key withDefaultValue:(BOOL)defaultValue;
+(NSString*)readStringFromArray:(NSArray*)array forIndex:(NSUInteger)index;
+(NSString*)readStringFromArray:(NSArray*)array forIndex:(NSUInteger)index withDefaultValue:(NSString* _Nullable)defaultValue;
@@ -25,6 +27,8 @@ NS_ASSUME_NONNULL_BEGIN
+(NSNumber*)readNumberFromArray:(NSArray*)array forIndex:(NSUInteger)index withDefaultValue:(NSNumber* _Nullable)defaultValue;
+(int)readIntFromArray:(NSArray*)array forIndex:(NSUInteger)index;
+(int)readIntFromArray:(NSArray*)array forIndex:(NSUInteger)index withDefaultValue:(int)defaultValue;
+(BOOL)readBoolFromArray:(NSArray*)array forIndex:(NSUInteger)index;
+(BOOL)readBoolFromArray:(NSArray*)array forIndex:(NSUInteger)index withDefaultValue:(BOOL)defaultValue;
@end

26
MonsterCards/Helpers/JSONHelper.m
View File

@@ -43,6 +43,14 @@ int coerceObjectToInt(NSObject *object, int defaultValue) {
return defaultValue;
}
BOOL coerceObjectToBool(NSObject *object, BOOL defaultValue) {
if ([object isKindOfClass:[NSNumber class]]) {
return [(NSNumber*)object boolValue];
}
return defaultValue;
}
+(NSString*)readStringFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key {
return [JSONHelper readStringFromDictionary:dictionary forKey:key withDefaultValue:nil];
}
@@ -70,6 +78,15 @@ int coerceObjectToInt(NSObject *object, int defaultValue) {
return coerceObjectToInt(object, defaultValue);
}
+(BOOL)readBoolFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key {
return [JSONHelper readBoolFromDictionary:dictionary forKey:key withDefaultValue:NO];
}
+(BOOL)readBoolFromDictionary:(NSDictionary*)dictionary forKey:(NSString*)key withDefaultValue:(BOOL)defaultValue {
NSObject *object = [dictionary objectForKey:key];
return coerceObjectToBool(object, defaultValue);
}
+(NSString*)readStringFromArray:(NSArray*)array forIndex:(NSUInteger)index{
return [JSONHelper readStringFromArray:array forIndex:index withDefaultValue:nil];
}
@@ -97,4 +114,13 @@ int coerceObjectToInt(NSObject *object, int defaultValue) {
return coerceObjectToInt(object, defaultValue);
}
+(BOOL)readBoolFromArray:(NSArray*)array forIndex:(NSUInteger)index {
return [JSONHelper readBoolFromArray:array forIndex:index withDefaultValue:nil];
}
+(BOOL)readBoolFromArray:(NSArray*)array forIndex:(NSUInteger)index withDefaultValue:(BOOL)defaultValue {
NSObject *object = [array objectAtIndex:index];
return coerceObjectToBool(object, defaultValue);
}
@end

92
MonsterCardsTests/Helpers/JSONHelperTests.m
View File

@@ -20,6 +20,9 @@
NSString *_jsonIntegerKey;
NSNumber *_jsonIntegerValue;
NSString *_jsonIntegerFragment;
NSString *_jsonBooleanKey;
BOOL _jsonBooleanValue;
NSString *_jsonBooleanFragment;
}
NSString* escapeStringForJSON(NSString *unescaped) {
@@ -53,6 +56,9 @@ NSArray* readJSONArrayFromString(NSString *jsonString) {
_jsonIntegerKey = @"my_int";
_jsonIntegerValue = @12345;
_jsonIntegerFragment = [NSString stringWithFormat:@"\"%@\":%@", escapeStringForJSON(_jsonIntegerKey), [_jsonIntegerValue stringValue]];
_jsonBooleanKey = @"my_bool";
_jsonBooleanValue = YES;
_jsonBooleanFragment = [NSString stringWithFormat:@"\"%@\":true", escapeStringForJSON(_jsonBooleanKey)];
}
- (void)tearDown {
@@ -312,4 +318,90 @@ NSArray* readJSONArrayFromString(NSString *jsonString) {
XCTAssertEqual([_jsonIntegerValue intValue], readNumber);
}
#pragma mark - BOOLs in Dictionaries
- (void)testReadBoolFromDictionaryReturnsFalseIfKeyNotPresent {
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonStringFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readBoolFromDictionary:jsonRoot forKey:_jsonBooleanKey];
XCTAssertEqual(0, readValue);
}
- (void)testReadBoolFromDictionaryWithDefaultReturnsDefaultIfKeyNotPresent {
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonStringFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readBoolFromDictionary:jsonRoot forKey:_jsonIntegerKey withDefaultValue:_jsonBooleanValue];
XCTAssertEqual(_jsonBooleanValue, readValue);
}
- (void) testReadBoolFromDictionaryReturnsCorrectValue {
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonBooleanFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readBoolFromDictionary:jsonRoot forKey:_jsonBooleanKey];
XCTAssertEqual(_jsonBooleanValue, readValue);
}
- (void)testReadBoolFromDictionaryWithDefaultReturnsCorrectValue {
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonBooleanFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readBoolFromDictionary:jsonRoot forKey:_jsonBooleanKey withDefaultValue:NO];
XCTAssertEqual(_jsonBooleanValue, readValue);
}
- (void) testReadBoolFromDictionaryReturnsFalseIfWrongType {
NSString *jsonString = [NSString stringWithFormat:@"{\"%@\":\"%@\"}", _jsonIntegerKey, _jsonStringValue];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readBoolFromDictionary:jsonRoot forKey:_jsonIntegerKey];
XCTAssertEqual(NO, readValue);
}
#pragma mark - BOOLs in Arrays
- (void)testReadBoolFromArrayReturnsFalseIfNotCoercable {
NSString *jsonString = [NSString stringWithFormat:@"[\"%@\"]", _jsonStringValue];
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readBoolFromArray:jsonRoot forIndex:0];
XCTAssertEqual(NO, readValue);
}
- (void)testReadBoolFromArrayWithDefaultReturnsDefaultValueIfNotCoercable {
NSString *jsonString = [NSString stringWithFormat:@"[\"%@\"]", _jsonStringValue];
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readIntFromArray:jsonRoot forIndex:0 withDefaultValue:YES];
XCTAssertEqual(YES, readValue);
}
- (void)testReadBoolFromArrayThrowsIfIndexOutOfRange {
// TODO: Decide if this should throw or return 0
NSString *jsonString = @"[]";
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
XCTAssertThrows([JSONHelper readBoolFromArray:jsonRoot forIndex:0]);
XCTAssertThrows([JSONHelper readBoolFromArray:jsonRoot forIndex:-1]);
}
- (void)testReadBoolFromArrayReturnsCorrectValue {
NSString *jsonString = [NSString stringWithFormat:@"[%s]", _jsonBooleanValue ? "true" : "false"];
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
BOOL readValue = [JSONHelper readBoolFromArray:jsonRoot forIndex:0];
XCTAssertEqual(_jsonBooleanValue, readValue);
}
@end