[ios] Fix and expand accessibility feature transliteration

- Fixed pre-iOS 11 compatibility.
- Expanded transliteration to all supported languages.

1 files changed, 19 insertions, 0 deletions

diff --git a/platform/ios/test/MGLNSOrthographyAdditionsTests.m b/platform/ios/test/MGLNSOrthographyAdditionsTests.m
new file mode 100644
index 0000000000..351fe4227e
--- /dev/null
+++ b/platform/ios/test/MGLNSOrthographyAdditionsTests.m
@@ -0,0 +1,19 @@
+#import <XCTest/XCTest.h>
+
+#import "NSOrthography+MGLAdditions.h"
+#import "MGLVectorSource_Private.h"
+
+@interface MGLNSOrthographyAdditionsTests : XCTestCase
+
+@end
+
+@implementation MGLNSOrthographyAdditionsTests
+
+- (void)testStreetsLanguages {
+    for (NSString *language in [MGLVectorSource mapboxStreetsLanguages]) {
+        NSString *dominantScript = [NSOrthography mgl_dominantScriptForMapboxStreetsLanguage:language];
+        XCTAssertNotEqualObjects(dominantScript, @"Zyyy", @"Mapbox Streets languages should have dominant script");
+    }
+}
+
+@end