1 files changed, 43 insertions, 0 deletions
diff --git a/platform/ios/test/MGLNetworkConfigurationTests.m b/platform/ios/test/MGLNetworkConfigurationTests.m
new file mode 100644
index 0000000000..bfb63f57af
--- /dev/null
+++ b/platform/ios/test/MGLNetworkConfigurationTests.m
@@ -0,0 +1,43 @@
+#import <Mapbox/Mapbox.h>
+#import <XCTest/XCTest.h>
+#import "MGLNetworkConfiguration_Private.h"
+
+@interface MGLNetworkConfigurationTests : XCTestCase
+@end
+
+@implementation MGLNetworkConfigurationTests
+
+// Regression test for https://github.com/mapbox/mapbox-gl-native/issues/14982
+- (void)testAccessingEventsFromMultipleThreads {
+    MGLNetworkConfiguration *configuration = [[MGLNetworkConfiguration alloc] init];
+    
+    // Concurrent
+    dispatch_queue_t queue = dispatch_queue_create("com.mapbox.testAccessingEventsFromMultipleThreads", DISPATCH_QUEUE_CONCURRENT);
+    
+    NSUInteger numberOfConcurrentBlocks = 20;
+    
+    XCTestExpectation *expectation = [self expectationWithDescription:@"wait-for-threads"];
+    expectation.expectedFulfillmentCount = numberOfConcurrentBlocks;
+    
+    for (NSUInteger i = 0; i < numberOfConcurrentBlocks; i++) {
+        
+        NSString *event = [NSString stringWithFormat:@"test://event-%ld", i];
+        NSString *resourceType = @"test";
+        
+        dispatch_async(queue, ^{
+            [configuration startDownloadEvent:event type:resourceType];
+            
+            NSURL *url = [NSURL URLWithString:event];
+            NSURLResponse *response = [[NSURLResponse alloc] initWithURL:url MIMEType:nil expectedContentLength:0 textEncodingName:nil];
+            
+            [configuration stopDownloadEventForResponse:response];
+            
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [expectation fulfill];
+            });
+        });
+    }
+    
+    [self waitForExpectations:@[expectation] timeout:10.0];
+}
+@end