MASCompositeConstraintSpec.m
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//
// MASCompositeConstraintSpec.m
// Masonry
//
// Created by Jonas Budelmann on 22/07/13.
// Copyright (c) 2013 cloudling. All rights reserved.
//
#import "MASCompositeConstraint.h"
#import "MASViewConstraint.h"
#import "MASConstraintDelegateMock.h"
#import "View+MASAdditions.h"
@interface MASCompositeConstraint () <MASConstraintDelegate>
@property (nonatomic, strong) NSMutableArray *childConstraints;
@end
@interface MASViewConstraint ()
@property (nonatomic, weak) MASLayoutConstraint *layoutConstraint;
@property (nonatomic, assign) CGFloat layoutConstant;
@property (nonatomic, assign) MASLayoutPriority layoutPriority;
@property (nonatomic, assign) CGFloat layoutMultiplier;
@end
SpecBegin(MASCompositeConstraint)
__block MASConstraintDelegateMock *delegate;
__block MAS_VIEW *superview;
__block MAS_VIEW *view;
__block MASCompositeConstraint *composite;
beforeEach(^{
delegate = MASConstraintDelegateMock.new;
view = MAS_VIEW.new;
superview = MAS_VIEW.new;
[superview addSubview:view];
});
it(@"should complete children", ^{
NSArray *children = @[
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_width],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_height]
];
composite = [[MASCompositeConstraint alloc] initWithChildren:children];
composite.delegate = delegate;
MAS_VIEW *newView = MAS_VIEW.new;
//first equality statement
composite.greaterThanOrEqualTo(newView).sizeOffset(CGSizeMake(90, 30)).multipliedBy(3).priorityLow();
expect(composite.childConstraints).to.haveCountOf(2);
MASViewConstraint *viewConstraint = composite.childConstraints[0];
expect(viewConstraint.secondViewAttribute.view).to.beIdenticalTo(newView);
expect(viewConstraint.secondViewAttribute.layoutAttribute).to.equal(NSLayoutAttributeWidth);
expect(viewConstraint.layoutConstant).to.equal(90);
expect(viewConstraint.layoutPriority).to.equal(MASLayoutPriorityDefaultLow);
viewConstraint = composite.childConstraints[1];
expect(viewConstraint.secondViewAttribute.view).to.beIdenticalTo(newView);
expect(viewConstraint.secondViewAttribute.layoutAttribute).to.equal(NSLayoutAttributeHeight);
expect(viewConstraint.layoutConstant).to.equal(30);
expect(viewConstraint.layoutPriority).to.equal(MASLayoutPriorityDefaultLow);
});
it(@"should not remove on install", ^{
NSArray *children = @[
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_centerX],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_centerY]
];
composite = [[MASCompositeConstraint alloc] initWithChildren:children];
composite.delegate = delegate;
MAS_VIEW *newView = MAS_VIEW.new;
[superview addSubview:newView];
//first equality statement
composite.equalTo(newView).centerOffset(CGPointMake(90, 30)).dividedBy(2).priorityHigh();
[composite install];
expect(composite.childConstraints).to.haveCountOf(2);
MASViewConstraint *viewConstraint = composite.childConstraints[0];
expect([viewConstraint layoutConstant]).to.equal(90);
expect([viewConstraint layoutMultiplier]).to.equal(0.5);
expect([viewConstraint layoutPriority]).to.equal(MASLayoutPriorityDefaultHigh);
viewConstraint = composite.childConstraints[1];
expect([viewConstraint layoutConstant]).to.equal(30);
expect([viewConstraint layoutMultiplier]).to.equal(0.5);
expect([viewConstraint layoutPriority]).to.equal(MASLayoutPriorityDefaultHigh);
});
it(@"should spawn child composite constraints", ^{
NSArray *children = @[
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_width],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_height]
];
composite = [[MASCompositeConstraint alloc] initWithChildren:children];
composite.delegate = delegate;
MAS_VIEW *otherView = MAS_VIEW.new;
[superview addSubview:otherView];
composite.lessThanOrEqualTo(@[@2, otherView]);
expect(composite.childConstraints).to.haveCountOf(2);
expect(composite.childConstraints[0]).to.beKindOf(MASCompositeConstraint.class);
expect(composite.childConstraints[1]).to.beKindOf(MASCompositeConstraint.class);
});
it(@"should modify insets on appropriate children", ^{
NSArray *children = @[
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_right],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_top],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_bottom],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_left],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_baseline],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_width],
];
composite = [[MASCompositeConstraint alloc] initWithChildren:children];
composite.delegate = delegate;
composite.with.insets((MASEdgeInsets){1, 2, 3, 4});
expect([children[0] layoutConstant]).to.equal(-4);
expect([children[1] layoutConstant]).to.equal(1);
expect([children[2] layoutConstant]).to.equal(-3);
expect([children[3] layoutConstant]).to.equal(2);
expect([children[4] layoutConstant]).to.equal(0);
expect([children[5] layoutConstant]).to.equal(0);
});
it(@"should uninstall", ^{
NSArray *children = @[
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_leading],
[[MASViewConstraint alloc] initWithFirstViewAttribute:view.mas_trailing]
];
composite = [[MASCompositeConstraint alloc] initWithChildren:children];
composite.delegate = delegate;
MAS_VIEW *newView = MAS_VIEW.new;
[superview addSubview:newView];
//first equality statement
composite.equalTo(newView);
[composite install];
expect(superview.constraints).to.haveCountOf(2);
[composite uninstall];
expect(superview.constraints).to.haveCountOf(0);
});
SpecEnd