1 files changed, 62 insertions, 0 deletions
diff --git a/src/objective-c/tests/UnitTests/UnitTests.m b/src/objective-c/tests/UnitTests/UnitTests.m
new file mode 100644
index 0000000000..57e686d1b6
--- /dev/null
+++ b/src/objective-c/tests/UnitTests/UnitTests.m
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#import <XCTest/XCTest.h>
+
+#import <GRPCClient/GRPCCall.h>
+
+#import "src/objective-c/GRPCClient/private/NSError+GRPC.h"
+
+@interface UnitTests : XCTestCase
+
+@end
+
+@implementation UnitTests
+
+- (void)testNSError {
+  const char *kDetails = "test details";
+  const char *kErrorString = "test errorString";
+  NSError *error1 = [NSError grpc_errorFromStatusCode:GRPC_STATUS_OK details:nil errorString:nil];
+  NSError *error2 = [NSError grpc_errorFromStatusCode:GRPC_STATUS_CANCELLED
+                                              details:kDetails
+                                          errorString:kErrorString];
+  NSError *error3 = [NSError grpc_errorFromStatusCode:GRPC_STATUS_UNAUTHENTICATED
+                                              details:kDetails
+                                          errorString:nil];
+  NSError *error4 =
+      [NSError grpc_errorFromStatusCode:GRPC_STATUS_UNAVAILABLE details:nil errorString:nil];
+
+  XCTAssertNil(error1);
+  XCTAssertEqual(error2.code, 1);
+  XCTAssertEqualObjects(error2.domain, @"io.grpc");
+  XCTAssertEqualObjects(error2.userInfo[NSLocalizedDescriptionKey],
+                        [NSString stringWithUTF8String:kDetails]);
+  XCTAssertEqualObjects(error2.userInfo[NSDebugDescriptionErrorKey],
+                        [NSString stringWithUTF8String:kErrorString]);
+  XCTAssertEqual(error3.code, 16);
+  XCTAssertEqualObjects(error3.domain, @"io.grpc");
+  XCTAssertEqualObjects(error3.userInfo[NSLocalizedDescriptionKey],
+                        [NSString stringWithUTF8String:kDetails]);
+  XCTAssertNil(error3.userInfo[NSDebugDescriptionErrorKey]);
+  XCTAssertEqual(error4.code, 14);
+  XCTAssertEqualObjects(error4.domain, @"io.grpc");
+  XCTAssertNil(error4.userInfo[NSLocalizedDescriptionKey]);
+  XCTAssertNil(error4.userInfo[NSDebugDescriptionErrorKey]);
+}
+
+@end