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* Allow embedding layouts in a view hierarchy created from another layout
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| // Copyright 2016 LinkedIn Corp. | ||
| // 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. | ||
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| import XCTest | ||
| @testable import LayoutKit | ||
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| class EmbeddedLayoutTests: XCTestCase { | ||
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| private let rootView = View() | ||
| private let singleViewArrangement = SizeLayout(minSize: .zero, config: { _ in }).arrangement() | ||
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| override func setUp() { | ||
| super.setUp() | ||
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| rootView.subviews.forEach { $0.removeFromSuperview() } | ||
| } | ||
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| func testKeepsSubviewsForEmbeddedLayoutWithReuseId() { | ||
| var parentView: View? | ||
| let parentLayout = SizeLayout(minSize: .zero, viewReuseId: "test", config: { view in | ||
| parentView = view | ||
| }) | ||
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| // Create Parent Layout | ||
| parentLayout.arrangement().makeViews(in: rootView) | ||
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| // Create Embedded Layout | ||
| XCTAssertNotNil(parentView) | ||
| singleViewArrangement.makeViews(in: parentView) | ||
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| // Re-create Parent Layout | ||
| parentLayout.arrangement().makeViews(in: rootView) | ||
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| XCTAssertEqual(parentView?.subviews.count, 1) | ||
| } | ||
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| func testRemovesSubviewsForEmbeddedLayoutWithoutReuseId() { | ||
| var parentView: View? | ||
| let parentLayout = SizeLayout(minSize: .zero, config: { view in | ||
| parentView = view | ||
| }) | ||
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| // Create Parent Layout | ||
| parentLayout.arrangement().makeViews(in: rootView) | ||
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| // Create Embedded Layout | ||
| XCTAssertNotNil(parentView) | ||
| singleViewArrangement.makeViews(in: parentView) | ||
| let originalParentView = parentView | ||
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| // Re-create Parent Layout | ||
| parentLayout.arrangement().makeViews(in: rootView) | ||
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| XCTAssertNotEqual(originalParentView, parentView) | ||
| XCTAssertEqual(parentView?.subviews.count, 0) | ||
| } | ||
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| func testEmbeddedLayoutsAreRemoved() { | ||
| var originalHostView: View? | ||
| SizeLayout( | ||
| minSize: .zero, | ||
| viewReuseId: "foo", | ||
| sublayout: SizeLayout(minSize: .zero, viewReuseId: "bar", config: { view in | ||
| originalHostView = view | ||
| self.singleViewArrangement.makeViews(in: view) | ||
| }), | ||
| config: { _ in }).arrangement().makeViews(in: rootView) | ||
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| XCTAssertEqual(rootView.subviews.count, 1) | ||
| XCTAssertNotNil(originalHostView) | ||
| XCTAssertEqual(originalHostView?.subviews.count, 1) | ||
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| var updatedHostView: View? | ||
| SizeLayout( | ||
| minSize: .zero, | ||
| viewReuseId: "foo", | ||
| sublayout: SizeLayout(minSize: .zero, viewReuseId: "baz", config: { view in | ||
| updatedHostView = view | ||
| }), | ||
| config: { _ in }).arrangement().makeViews(in: rootView) | ||
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| XCTAssertEqual(rootView.subviews.count, 1) | ||
| XCTAssertNotNil(updatedHostView) | ||
| XCTAssertEqual(updatedHostView?.subviews.count, 0) | ||
| XCTAssertNotEqual(originalHostView, updatedHostView) | ||
| } | ||
| } |
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