77 lines
2.5 KiB
Swift
77 lines
2.5 KiB
Swift
import XCTest
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@testable import TextualAutoLayout
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final class TextualAutoLayoutTests: XCTestCase {
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var parent, A, B: ConstraintView!
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override func setUp() {
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parent = ConstraintView()
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A = ConstraintView()
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B = ConstraintView()
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parent.addSubview(A)
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parent.addSubview(B)
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}
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func testBasic() {
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let x = A.bottomAnchor =&= B.topAnchor + 20.3 | .defaultLow
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XCTAssertEqual(x.relation, NSLayoutConstraint.Relation.equal)
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XCTAssertEqual(x.priority, ConstraintPriority.defaultLow)
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XCTAssertEqual(x.constant, 20.3)
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XCTAssertEqual(x.isActive, true)
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}
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func testDimensional() {
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let x = A.heightAnchor =<= 2 * B.widthAnchor - 4
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XCTAssertEqual(x.relation, NSLayoutConstraint.Relation.lessThanOrEqual)
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XCTAssertEqual(x.priority, ConstraintPriority.required)
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XCTAssertEqual(x.multiplier, 2)
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XCTAssertEqual(x.constant, -4)
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XCTAssertEqual(x.isActive, true)
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XCTAssertEqual((A.widthAnchor =>= 2 * A.heightAnchor).constant, 0)
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XCTAssertEqual((A.widthAnchor =<= 250).constant, 250)
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}
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func testIntrinsicContent() {
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A.constrainHuggingCompression(.vertical, .required)
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// newly set values
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XCTAssertEqual(A.contentCompressionResistancePriority(for: .vertical), ConstraintPriority.required)
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XCTAssertEqual(A.contentHuggingPriority(for: .vertical), ConstraintPriority.required)
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// default values
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XCTAssertEqual(A.contentCompressionResistancePriority(for: .horizontal), ConstraintPriority.defaultHigh)
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XCTAssertEqual(A.contentHuggingPriority(for: .horizontal), ConstraintPriority.defaultLow)
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}
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func testReturnConstraint() {
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XCTAssertEqual((A.rightAnchor =&= B.leftAnchor).firstItem as? ConstraintView, A)
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}
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func testViewMultiConstraint() {
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A.anchor([.left, .right, .top], to: parent!, padding: 76) | .defaultHigh
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let x = parent.constraints
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XCTAssertEqual(x.count, 3)
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XCTAssertEqual(A.translatesAutoresizingMaskIntoConstraints, false)
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XCTAssertEqual(parent.translatesAutoresizingMaskIntoConstraints, true)
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for u in x {
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XCTAssertEqual(u.relation, NSLayoutConstraint.Relation.equal)
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XCTAssertEqual(u.priority, ConstraintPriority.defaultHigh)
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XCTAssertEqual(u.constant, 76)
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XCTAssertEqual(u.firstAttribute, u.secondAttribute)
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XCTAssertEqual(u.isActive, true)
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let first = u.firstItem as? ConstraintView
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let second = u.secondItem as? ConstraintView
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if u.firstAttribute == .right {
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XCTAssertEqual(first, parent)
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XCTAssertEqual(second, A)
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} else {
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XCTAssertEqual(first, A)
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XCTAssertEqual(second, parent)
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}
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}
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x.setActive(false)
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for u in x { XCTAssertEqual(u.isActive, false) }
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}
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}
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