56aa279fef
Summary: When I try to use this in practice, I have come to realize that css_sizeThatFits will 99% return to you the constrainedSize that you pass it, thus making it useless. Instead, we replace it with a new API that will tell you the optimal size of the resolved layout. From this we can choose to use that size, or scale it down. Reviewed By: emilsjolander Differential Revision: D4191873 fbshipit-source-id: d36a2850448d9d82f97e5ef4c7397778c2a14094
129 lines
4.0 KiB
Objective-C
129 lines
4.0 KiB
Objective-C
/**
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* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <XCTest/XCTest.h>
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#import "UIView+CSSLayout.h"
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@interface CSSLayoutKitTests : XCTestCase
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@end
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@implementation CSSLayoutKitTests
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#ifndef TRAVIS_CI
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- (void)testNodesAreDeallocedWithSingleView
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{
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XCTAssertEqual(0, CSSNodeGetInstanceCount());
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UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
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[view css_setFlexBasis:1];
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XCTAssertEqual(1, CSSNodeGetInstanceCount());
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view = nil;
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XCTAssertEqual(0, CSSNodeGetInstanceCount());
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}
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- (void)testNodesAreDeallocedCascade
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{
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XCTAssertEqual(0, CSSNodeGetInstanceCount());
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UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
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[view css_setFlexBasis:1];
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for (int i=0; i<10; i++) {
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UIView *subview = [[UIView alloc] initWithFrame:CGRectZero];
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[subview css_setFlexBasis:1];
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[view addSubview:subview];
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}
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XCTAssertEqual(11, CSSNodeGetInstanceCount());
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view = nil;
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XCTAssertEqual(0, CSSNodeGetInstanceCount());
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}
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#endif
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- (void)testUsesFlexbox
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{
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UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
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XCTAssertFalse([view css_usesFlexbox]);
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[view css_setUsesFlexbox:YES];
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XCTAssertTrue([view css_usesFlexbox]);
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[view css_setUsesFlexbox:NO];
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XCTAssertFalse([view css_usesFlexbox]);
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}
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- (void)testSizeThatFitsAsserts
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{
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UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
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dispatch_sync(dispatch_queue_create("com.facebook.CSSLayout.testing", DISPATCH_QUEUE_SERIAL), ^(void){
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XCTAssertThrows([view css_intrinsicSize]);
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});
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}
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- (void)testSizeThatFitsSmoke
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{
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UIView *container = [[UIView alloc] initWithFrame:CGRectZero];
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[container css_setUsesFlexbox:YES];
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[container css_setFlexDirection:CSSFlexDirectionRow];
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[container css_setAlignItems:CSSAlignFlexStart];
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UILabel *longTextLabel = [[UILabel alloc] initWithFrame:CGRectZero];
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longTextLabel.text = @"This is a very very very very very very very very long piece of text.";
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longTextLabel.lineBreakMode = NSLineBreakByTruncatingTail;
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longTextLabel.numberOfLines = 1;
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[longTextLabel css_setUsesFlexbox:YES];
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[longTextLabel css_setFlexShrink:1];
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[container addSubview:longTextLabel];
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UIView *textBadgeView = [[UIView alloc] initWithFrame:CGRectZero];
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[textBadgeView css_setUsesFlexbox:YES];
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[textBadgeView css_setMargin:3.0 forEdge:CSSEdgeLeft];
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[textBadgeView css_setWidth:10];
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[textBadgeView css_setHeight:10];
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[container addSubview:textBadgeView];
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const CGSize containerSize = [container css_intrinsicSize];
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XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(514,21), containerSize), @"Size is actually %@", NSStringFromCGSize(containerSize));
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}
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- (void)testFrameAndOriginPlacement
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{
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const CGSize containerSize = CGSizeMake(320, 50);
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UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, containerSize.width, containerSize.height)];
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[container css_setUsesFlexbox:YES];
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[container css_setFlexDirection:CSSFlexDirectionRow];
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for (int i = 0; i < 3; i++) {
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UIView *subview = [[UIView alloc] initWithFrame:CGRectZero];
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[subview css_setUsesFlexbox:YES];
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[subview css_setFlexGrow:1];
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[container addSubview:subview];
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}
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[container css_applyLayout];
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XCTAssertFalse(CGRectIntersectsRect([container.subviews objectAtIndex:0].frame, [container.subviews objectAtIndex:1].frame));
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XCTAssertFalse(CGRectIntersectsRect([container.subviews objectAtIndex:1].frame, [container.subviews objectAtIndex:2].frame));
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XCTAssertFalse(CGRectIntersectsRect([container.subviews objectAtIndex:0].frame, [container.subviews objectAtIndex:2].frame));
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CGFloat totalWidth = 0;
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for (UIView *view in container.subviews) {
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totalWidth += view.bounds.size.width;
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}
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XCTAssertEqual(containerSize.width, totalWidth, @"The container's width is %.6f, the subviews take up %.6f", containerSize.width, totalWidth);
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}
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@end
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