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WebDriverAgentTests/UnitTests/FBErrorBuilderTests.m

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+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <XCTest/XCTest.h>
+
+#import "FBErrorBuilder.h"
+
+@interface FBErrorBuilderTests : XCTestCase
+@end
+
+@implementation FBErrorBuilderTests
+
+- (void)testErrorWithDescription
+{
+  NSString *expectedDescription = @"Magic description";
+  NSError *error =
+  [[[FBErrorBuilder builder]
+    withDescription:expectedDescription]
+   build];
+  XCTAssertNotNil(error);
+  XCTAssertEqualObjects([error localizedDescription], expectedDescription);
+}
+
+- (void)testErrorWithDescriptionFormat
+{
+  NSError *error =
+  [[[FBErrorBuilder builder]
+    withDescriptionFormat:@"Magic %@", @"bob"]
+   build];
+  XCTAssertEqualObjects([error localizedDescription], @"Magic bob");
+}
+
+- (void)testInnerError
+{
+  NSError *innerError = [NSError errorWithDomain:@"Domain" code:1 userInfo:@{}];
+  NSError *error =
+  [[[FBErrorBuilder builder]
+    withInnerError:innerError]
+   build];
+  XCTAssertEqual(error.userInfo[NSUnderlyingErrorKey], innerError);
+}
+
+- (void)testBuildWithError
+{
+  NSString *expectedDescription = @"Magic description";
+  NSError *error;
+  BOOL result =
+  [[[FBErrorBuilder builder]
+    withDescription:expectedDescription]
+   buildError:&error];
+  XCTAssertNotNil(error);
+  XCTAssertEqualObjects(error.localizedDescription, expectedDescription);
+  XCTAssertFalse(result);
+}
+
+@end