1 files changed, 8 insertions, 0 deletions
diff --git a/platform/darwin/test/MGLExpressionTests.mm b/platform/darwin/test/MGLExpressionTests.mm
index 1b0630cef3..8856cbf528 100644
--- a/platform/darwin/test/MGLExpressionTests.mm
+++ b/platform/darwin/test/MGLExpressionTests.mm
@@ -171,6 +171,14 @@ using namespace std::string_literals;
         XCTAssertEqualObjects([expression expressionValueWithObject:nil context:context], @1);
     }
     {
+        NSExpression *expression = [NSExpression expressionForVariable:@"lineProgress"];
+        XCTAssertEqualObjects(expression.mgl_jsonExpressionObject, @[@"line-progress"]);
+        XCTAssertEqualObjects([NSExpression expressionWithFormat:@"$lineProgress"].mgl_jsonExpressionObject, @[@"line-progress"]);
+        XCTAssertEqualObjects([NSExpression expressionWithMGLJSONObject:@[@"line-progress"]], expression);
+        NSMutableDictionary *context = [@{@"lineProgress": @1} mutableCopy];
+        XCTAssertEqualObjects([expression expressionValueWithObject:nil context:context], @1);
+    }
+    {
         NSExpression *expression = [NSExpression expressionForVariable:@"geometryType"];
         XCTAssertEqualObjects(expression.mgl_jsonExpressionObject, @[@"geometry-type"]);
         XCTAssertEqualObjects([NSExpression expressionWithFormat:@"$geometryType"].mgl_jsonExpressionObject, @[@"geometry-type"]);