Fixes typing in Language initializer.

Fixes default initializer of Language model.
Adds tests for Language model.

iOS/MonsterCardsTests/Models/LanguageTests.m

@@ -0,0 +1,56 @@
+//
+//  Language.m
+//  MonsterCardsTests
+//
+//  Created by Tom Hicks on 9/5/20.
+//  Copyright © 2020 Tom Hicks. All rights reserved.
+//
+
+#import <XCTest/XCTest.h>
+#import "Language.h"
+
+@interface LanguageTests : XCTestCase
+
+@end
+
+@implementation LanguageTests {
+    Language *_language;
+    NSString *_name;
+    BOOL _canSpeak;
+}
+
+- (void)setUp {
+    _language = [[Language alloc] init];
+    _name = @"English";
+    _canSpeak = YES;
+}
+
+- (void)tearDown {
+    // Put teardown code here. This method is called after the invocation of each test method in the class.
+}
+
+- (void)testDefaultInitializer {
+    XCTAssertNotNil(_language);
+    XCTAssertEqualObjects(@"", _language.name);
+    XCTAssertEqual(YES, _language.speaks);
+}
+
+- (void)testInitWithNameAndSpeaks {
+    _language = [[Language alloc] initWithName:_name andSpeaks:_canSpeak];
+
+    XCTAssertNotNil(_language);
+    XCTAssertEqualObjects(_name, _language.name);
+    XCTAssertEqual(_canSpeak, _language.speaks);
+}
+
+- (void)testNameGetterAndSetter {
+    _language.name = _name;
+    XCTAssertEqualObjects(_name, _language.name);
+}
+
+- (void)testSpeaksGetterAndSetter {
+    _language.speaks = NO;
+    XCTAssertEqual(NO, _language.speaks);
+}
+
+@end