Add snapshot tests for ASStaticLayoutSpec.

AsyncDisplayKit.xcodeproj/project.pbxproj

@@ -233,6 +233,7 @@
 		9CDC18CC1B910E12004965E2 /* ASLayoutablePrivate.h in Headers */ = {isa = PBXBuildFile; fileRef = 9CDC18CB1B910E12004965E2 /* ASLayoutablePrivate.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		9CDC18CD1B910E12004965E2 /* ASLayoutablePrivate.h in Headers */ = {isa = PBXBuildFile; fileRef = 9CDC18CB1B910E12004965E2 /* ASLayoutablePrivate.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		9F06E5CD1B4CAF4200F015D8 /* ASCollectionViewTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 9F06E5CC1B4CAF4200F015D8 /* ASCollectionViewTests.m */; };
+		AC026B581BD3F61800BBC17E /* ASStaticLayoutSpecSnapshotTests.m in Sources */ = {isa = PBXBuildFile; fileRef = AC026B571BD3F61800BBC17E /* ASStaticLayoutSpecSnapshotTests.m */; };
 		AC21EC101B3D0BF600C8B19A /* ASStackLayoutDefines.h in Headers */ = {isa = PBXBuildFile; fileRef = AC21EC0F1B3D0BF600C8B19A /* ASStackLayoutDefines.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		AC3C4A511A1139C100143C57 /* ASCollectionView.h in Headers */ = {isa = PBXBuildFile; fileRef = AC3C4A4F1A1139C100143C57 /* ASCollectionView.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		AC3C4A521A1139C100143C57 /* ASCollectionView.mm in Sources */ = {isa = PBXBuildFile; fileRef = AC3C4A501A1139C100143C57 /* ASCollectionView.mm */; };
@@ -590,6 +591,7 @@
 		9C8221941BA237B80037F19A /* ASStackBaselinePositionedLayout.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ASStackBaselinePositionedLayout.mm; sourceTree = "<group>"; };
 		9CDC18CB1B910E12004965E2 /* ASLayoutablePrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ASLayoutablePrivate.h; path = AsyncDisplayKit/Layout/ASLayoutablePrivate.h; sourceTree = "<group>"; };
 		9F06E5CC1B4CAF4200F015D8 /* ASCollectionViewTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ASCollectionViewTests.m; sourceTree = "<group>"; };
+		AC026B571BD3F61800BBC17E /* ASStaticLayoutSpecSnapshotTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ASStaticLayoutSpecSnapshotTests.m; sourceTree = "<group>"; };
 		AC21EC0F1B3D0BF600C8B19A /* ASStackLayoutDefines.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ASStackLayoutDefines.h; path = AsyncDisplayKit/Layout/ASStackLayoutDefines.h; sourceTree = "<group>"; };
 		AC3C4A4F1A1139C100143C57 /* ASCollectionView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ASCollectionView.h; sourceTree = "<group>"; };
 		AC3C4A501A1139C100143C57 /* ASCollectionView.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ASCollectionView.mm; sourceTree = "<group>"; };
@@ -819,6 +821,7 @@
 				ACF6ED591B178DC700DA7C62 /* ASOverlayLayoutSpecSnapshotTests.mm */,
 				ACF6ED5A1B178DC700DA7C62 /* ASRatioLayoutSpecSnapshotTests.mm */,
 				ACF6ED5B1B178DC700DA7C62 /* ASStackLayoutSpecSnapshotTests.mm */,
+				AC026B571BD3F61800BBC17E /* ASStaticLayoutSpecSnapshotTests.m */,
 				ACF6ED571B178DC700DA7C62 /* ASLayoutSpecSnapshotTestsHelper.h */,
 				ACF6ED581B178DC700DA7C62 /* ASLayoutSpecSnapshotTestsHelper.m */,
 				242995D21B29743C00090100 /* ASBasicImageDownloaderTests.m */,
@@ -1552,6 +1555,7 @@
 				058D0A3A195D057000B7D73C /* ASDisplayNodeTests.m in Sources */,
 				058D0A3B195D057000B7D73C /* ASDisplayNodeTestsHelper.m in Sources */,
 				056D21551ABCEF50001107EF /* ASImageNodeSnapshotTests.m in Sources */,
+				AC026B581BD3F61800BBC17E /* ASStaticLayoutSpecSnapshotTests.m in Sources */,
 				ACF6ED5E1B178DC700DA7C62 /* ASInsetLayoutSpecSnapshotTests.mm in Sources */,
 				ACF6ED601B178DC700DA7C62 /* ASLayoutSpecSnapshotTestsHelper.m in Sources */,
 				CC7FD9E11BB5F750005CCB2B /* ASPhotosFrameworkImageRequestTests.m in Sources */,

AsyncDisplayKitTests/ASStaticLayoutSpecSnapshotTests.m

@@ -0,0 +1,85 @@
+//
+//  ASStaticLayoutSpecSnapshotTests.m
+//  AsyncDisplayKit
+//
+//  Created by Huy Nguyen on 18/10/15.
+//  Copyright (c) 2015 Facebook. All rights reserved.
+//
+
+#import "ASLayoutSpecSnapshotTestsHelper.h"
+
+#import "ASStaticLayoutSpec.h"
+#import "ASBackgroundLayoutSpec.h"
+
+@interface ASStaticLayoutSpecSnapshotTests : ASLayoutSpecSnapshotTestCase
+@end
+
+@implementation ASStaticLayoutSpecSnapshotTests
+
+- (void)setUp
+{
+  [super setUp];
+  self.recordMode = NO;
+}
+
+- (void)testSizingBehaviour
+{
+  [self testWithSizeRange:ASSizeRangeMake(CGSizeMake(150, 200), CGSizeMake(FLT_MAX, FLT_MAX))
+               identifier:@"underflowChildren"];
+  [self testWithSizeRange:ASSizeRangeMake(CGSizeZero, CGSizeMake(50, 100))
+               identifier:@"overflowChildren"];
+  // Expect the spec to wrap its content because children sizes are between constrained size
+  [self testWithSizeRange:ASSizeRangeMake(CGSizeZero, CGSizeMake(FLT_MAX / 2, FLT_MAX / 2))
+               identifier:@"wrappedChildren"];
+}
+
+- (void)testChildrenMeasuredWithAutoMaxSize
+{
+  ASStaticSizeDisplayNode *firstChild = ASDisplayNodeWithBackgroundColor([UIColor redColor]);
+  firstChild.layoutPosition = CGPointMake(0, 0);
+  firstChild.staticSize = CGSizeMake(50, 50);
+  
+  ASStaticSizeDisplayNode *secondChild = ASDisplayNodeWithBackgroundColor([UIColor blueColor]);
+  secondChild.layoutPosition = CGPointMake(10, 60);
+  secondChild.staticSize = CGSizeMake(100, 100);
+
+  ASSizeRange sizeRange = ASSizeRangeMake(CGSizeMake(10, 10), CGSizeMake(110, 160));
+  [self testWithChildren:@[firstChild, secondChild] sizeRange:sizeRange identifier:nil];
+  
+  XCTAssertTrue(ASSizeRangeEqualToSizeRange(firstChild.constrainedSizeForCalculatedLayout,
+                                            ASSizeRangeMake(CGSizeZero, sizeRange.max)));
+  CGSize secondChildMaxSize = CGSizeMake(sizeRange.max.width - secondChild.layoutPosition.x,
+                                         sizeRange.max.height - secondChild.layoutPosition.y);
+  XCTAssertTrue(ASSizeRangeEqualToSizeRange(secondChild.constrainedSizeForCalculatedLayout,
+                                            ASSizeRangeMake(CGSizeZero, secondChildMaxSize)));
+}
+
+- (void)testWithSizeRange:(ASSizeRange)sizeRange identifier:(NSString *)identifier
+{
+  ASDisplayNode *firstChild = ASDisplayNodeWithBackgroundColor([UIColor redColor]);
+  firstChild.layoutPosition = CGPointMake(0, 0);
+  firstChild.sizeRange = ASRelativeSizeRangeMakeWithExactCGSize(CGSizeMake(50, 50));
+  
+  
+  ASDisplayNode *secondChild = ASDisplayNodeWithBackgroundColor([UIColor blueColor]);
+  secondChild.layoutPosition = CGPointMake(0, 50);
+  secondChild.sizeRange = ASRelativeSizeRangeMakeWithExactCGSize(CGSizeMake(100, 100));
+  
+  [self testWithChildren:@[firstChild, secondChild] sizeRange:sizeRange identifier:identifier];
+}
+
+- (void)testWithChildren:(NSArray *)children sizeRange:(ASSizeRange)sizeRange identifier:(NSString *)identifier
+{
+  ASDisplayNode *backgroundNode = ASDisplayNodeWithBackgroundColor([UIColor whiteColor]);
+
+  NSMutableArray *subnodes = [NSMutableArray arrayWithArray:children];
+  [subnodes insertObject:backgroundNode atIndex:0];
+
+  ASStaticLayoutSpec *staticLayoutSpec = [ASStaticLayoutSpec staticLayoutSpecWithChildren:children];
+  ASLayoutSpec *layoutSpec = [ASBackgroundLayoutSpec backgroundLayoutSpecWithChild:staticLayoutSpec
+                                                                        background:backgroundNode];
+  
+  [self testLayoutSpec:layoutSpec sizeRange:sizeRange subnodes:subnodes identifier:identifier];
+}
+
+@end