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Adds JSONHelper methods to read arrays.

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This commit is contained in:
Tom Hicks
2020-09-17 12:37:03 -07:00
parent 555efac0c4
commit 8f52940d98
3 changed files with 126 additions and 1 deletions
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97
MonsterCardsTests/Helpers/JSONHelperTests.m
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@@ -27,6 +27,10 @@
NSDictionary *_jsonDictionaryValue;
NSString *_jsonDictionaryFragment;
NSString *_jsonDictionaryStringValue;
NSString *_jsonArrayKey;
NSArray *_jsonArrayValue;
NSString *_jsonArrayFragment;
NSString *_jsonArrayStringValue;
}
NSString* escapeStringForJSON(NSString *unescaped) {
@@ -64,9 +68,13 @@ NSArray* readJSONArrayFromString(NSString *jsonString) {
_jsonBooleanValue = YES;
_jsonBooleanFragment = [NSString stringWithFormat:@"\"%@\":true", escapeStringForJSON(_jsonBooleanKey)];
_jsonDictionaryKey = @"my_dictionary";
_jsonDictionaryValue = [NSDictionary dictionaryWithObjectsAndKeys:_jsonStringValue, _jsonStringKey, nil];
_jsonDictionaryValue = @{_jsonStringKey: _jsonStringValue};
_jsonDictionaryStringValue = [NSString stringWithFormat:@"{%@}", _jsonStringFragment];
_jsonDictionaryFragment = [NSString stringWithFormat:@"\"%@\":%@", escapeStringForJSON(_jsonDictionaryKey), _jsonDictionaryStringValue];
_jsonArrayKey = @"my_array";
_jsonArrayValue = @[_jsonStringValue];
_jsonArrayStringValue = [NSString stringWithFormat:@"[\"%@\"]", _jsonStringValue];
_jsonArrayFragment = [NSString stringWithFormat:@"\"%@\":%@", escapeStringForJSON(_jsonArrayKey), _jsonArrayStringValue];
}
- (void)tearDown {
@@ -298,6 +306,54 @@ NSArray* readJSONArrayFromString(NSString *jsonString) {
XCTAssertNil(readValue);
}
#pragma mark - Arrays in Dictionaries
- (void)testReadArrayFromDictionaryReturnsNilIfKeyNotPresent {
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonStringFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromDictionary:jsonRoot forKey:_jsonArrayKey];
XCTAssertNil(readValue);
}
- (void)testReadArrayFromDictionaryWithDefaultReturnsDefaultIfKeyNotPresent{
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonStringFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromDictionary:jsonRoot forKey:_jsonArrayKey withDefaultValue:@[]];
XCTAssertEqualObjects(@[], readValue);
}
- (void)testReadArrayFromDictionaryReturnsCorrectValue {
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonArrayFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromDictionary:jsonRoot forKey:_jsonArrayKey];
XCTAssertEqualObjects(_jsonArrayValue, readValue);
}
- (void)testReadArrayFromDictionaryWithDefaultReturnsCorrectValue {
NSString *jsonString = [NSString stringWithFormat:@"{%@}", _jsonIntegerFragment];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromDictionary:jsonRoot forKey:_jsonArrayKey withDefaultValue:@[]];
XCTAssertEqualObjects(@[], readValue);
}
- (void)testReadArrayFromDictionaryReturnsNilIfWrongType {
NSString *jsonString = [NSString stringWithFormat:@"{\"%@\":\"%@\"}", _jsonArrayKey, _jsonStringValue];
NSDictionary *jsonRoot = readJSONDictionaryFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromDictionary:jsonRoot forKey:_jsonArrayKey];
XCTAssertNil(readValue);
}
#pragma mark - Integers in Arrays
- (void)testReadIntegerFromArrayReturnsNilIfNotAnInteger {
@@ -499,4 +555,43 @@ NSArray* readJSONArrayFromString(NSString *jsonString) {
XCTAssertEqualObjects(_jsonDictionaryValue, readValue);
}
#pragma mark - Arrays in Arrays
- (void)testReadArrayFromArrayReturnsNilIfNotCoercable {
NSString *jsonString = [NSString stringWithFormat:@"[\"%@\"]", _jsonStringValue];
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromArray:jsonRoot forIndex:0];
XCTAssertNil(readValue);
}
- (void)testReadArrayFromArrayWithDefaultReturnsDefaultValueIfNotCoercable {
NSString *jsonString = [NSString stringWithFormat:@"[\"%@\"]", _jsonStringValue];
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromArray:jsonRoot forIndex:0 withDefaultValue:@[]];
XCTAssertEqualObjects(@[], readValue);
}
- (void)testReadArrayFromArrayThrowsIfIndexOutOfRange {
// TODO: Decide if this should throw or return nil
NSString *jsonString = @"[]";
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
XCTAssertThrows([JSONHelper readArrayFromArray:jsonRoot forIndex:0]);
XCTAssertThrows([JSONHelper readArrayFromArray:jsonRoot forIndex:-1]);
}
- (void)testReadArrayFromArrayReturnsCorrectValue {
NSString *jsonString = [NSString stringWithFormat:@"[%@]", _jsonArrayStringValue];
NSArray *jsonRoot = readJSONArrayFromString(jsonString);
XCTAssertNotNil(jsonRoot);
NSArray *readValue = [JSONHelper readArrayFromArray:jsonRoot forIndex:0];
XCTAssertEqualObjects(_jsonArrayValue, readValue);
}
@end