[Shapes] Add test demonstrating issue with calling borderWidth multip…

…le times with same value.

PiperOrigin-RevId: 322911175

components/schemes/Shape/examples/MDCShapeWithBorderExample.m

@@ -0,0 +1,73 @@
+// Copyright 2020-present the Material Components for iOS authors. All Rights Reserved.
+//
+// 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 "MaterialCards.h"
+#import "MaterialCards+Theming.h"
+#import "MaterialShapeLibrary.h"
+#import "MaterialShapes.h"
+
+@interface MDCShapeWithBorderExample : UIViewController
+@property(strong, nonatomic) MDCCard *card;
+@end
+
+@implementation MDCShapeWithBorderExample
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  self.view.backgroundColor = UIColor.whiteColor;
+  self.card = [[MDCCard alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
+  self.card.center = self.view.center;
+  self.card.backgroundColor = UIColor.blueColor;
+
+  MDCRectangleShapeGenerator *rectangleShape = [[MDCRectangleShapeGenerator alloc] init];
+  [rectangleShape setCorners:[MDCCornerTreatment cornerWithRadius:8]];
+  self.card.shapeGenerator = rectangleShape;
+  [self.card setBorderColor:UIColor.blackColor forState:UIControlStateNormal];
+  [self.card setBorderColor:UIColor.blackColor forState:UIControlStateHighlighted];
+  [self.card setBorderWidth:1 forState:UIControlStateNormal];
+  [self.card setBorderWidth:4 forState:UIControlStateHighlighted];
+
+  [self.view addSubview:self.card];
+}
+
+@end
+
+#pragma mark - Catalog by convention
+@implementation MDCShapeWithBorderExample (CatlogByConvention)
+
++ (NSDictionary *)catalogMetadata {
+  return @{
+    @"breadcrumbs" : @[ @"Shape", @"Card with Border example" ],
+    @"primaryDemo" : @NO,
+    @"presentable" : @YES,
+  };
+}
+
+@end
+
+@implementation MDCShapeWithBorderExample (SnapshotTestingByConvention)
+
+- (void)testTappingMultipleTimesOnCard {
+  // When
+  self.card.highlighted = YES;
+  self.card.highlighted = YES;
+  self.card.highlighted = YES;
+  self.card.highlighted = YES;
+  self.card.highlighted = YES;
+  self.card.highlighted = YES;
+  self.card.highlighted = YES;
+}
+
+@end