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mikaojmikaoj
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Fix for off-by-one bug.
With a bunch of unit tests
1 parent 61621d4 commit 8de86be

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7 files changed

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-42
lines changed

7 files changed

+319
-42
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‎Example/BSGridCollectionViewLayout.xcodeproj/project.pbxproj‎

Lines changed: 16 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -7,13 +7,16 @@
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@@ -31,6 +34,9 @@
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37+
553DE6741CABBFCD006C4C9F /* LastRowTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LastRowTests.swift; sourceTree = "<group>"; };
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3440
607FACD01AFB9204008FA782 /* BSGridCollectionViewLayout_Example.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = BSGridCollectionViewLayout_Example.app; sourceTree = BUILT_PRODUCTS_DIR; };
3541
607FACD41AFB9204008FA782 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
3642
607FACD51AFB9204008FA782 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
@@ -40,7 +46,7 @@
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607FACDF1AFB9204008FA782 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = Base.lproj/LaunchScreen.xib; sourceTree = "<group>"; };
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607FACE51AFB9204008FA782 /* BSGridCollectionViewLayout_Tests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = BSGridCollectionViewLayout_Tests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
4248
607FACEA1AFB9204008FA782 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
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607FACEB1AFB9204008FA782 /* Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Tests.swift; sourceTree = "<group>"; };
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62621CB8A78F5398E3B938B5 /* README.md */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = net.daringfireball.markdown; name = README.md; path = ../README.md; sourceTree = "<group>"; };
4551
9AF8FCAAFF35FF4BB989081B /* Pods_BSGridCollectionViewLayout_Example.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_BSGridCollectionViewLayout_Example.framework; sourceTree = BUILT_PRODUCTS_DIR; };
4652
B87BF5ECE1FED6612E07787A /* BSGridCollectionViewLayout.podspec */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text; name = BSGridCollectionViewLayout.podspec; path = ../BSGridCollectionViewLayout.podspec; sourceTree = "<group>"; };
@@ -124,7 +130,10 @@
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607FACE81AFB9204008FA782 /* Tests */ = {
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children = (
127-
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553DE6741CABBFCD006C4C9F /* LastRowTests.swift */,
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553DE6761CABC7FA006C4C9F /* FirstIndexTests.swift */,
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553DE6781CABCC14006C4C9F /* LastIndexTests.swift */,
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607FACE91AFB9204008FA782 /* Supporting Files */,
129138
);
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path = Tests;
@@ -218,7 +227,6 @@
218227
};
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607FACE41AFB9204008FA782 = {
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CreatedOnToolsVersion = 6.3.1;
221-
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@@ -368,7 +376,10 @@
368376
isa = PBXSourcesBuildPhase;
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buildActionMask = 2147483647;
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files = (
371-
607FACEC1AFB9204008FA782 /* Tests.swift in Sources */,
379+
553DE6751CABBFCD006C4C9F /* LastRowTests.swift in Sources */,
380+
607FACEC1AFB9204008FA782 /* FirstRowTests.swift in Sources */,
381+
553DE6791CABCC14006C4C9F /* LastIndexTests.swift in Sources */,
382+
553DE6771CABC7FA006C4C9F /* FirstIndexTests.swift in Sources */,
372383
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runOnlyForDeploymentPostprocessing = 0;
374385
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@@ -516,7 +527,6 @@
516527
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517528
baseConfigurationReference = F04D8B05088B4DF749D43009 /* Pods-BSGridCollectionViewLayout_Tests.debug.xcconfig */;
518529
buildSettings = {
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GCC_PREPROCESSOR_DEFINITIONS = (
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@@ -525,20 +535,17 @@
525535
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526536
PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.$(PRODUCT_NAME:rfc1034identifier)";
527537
PRODUCT_NAME = "$(TARGET_NAME)";
528-
TEST_HOST = "$(BUILT_PRODUCTS_DIR)/BSGridCollectionViewLayout_Example.app/BSGridCollectionViewLayout_Example";
529538
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530539
name = Debug;
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532541
607FACF41AFB9204008FA782 /* Release */ = {
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542549
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name = Release;
544551
};

‎Example/Tests/FirstIndexTests.swift‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,36 @@
1+
// The MIT License (MIT)
2+
//
3+
// Copyright (c) 2016 Joakim Gyllström
4+
//
5+
// Permission is hereby granted, free of charge, to any person obtaining a copy
6+
// of this software and associated documentation files (the "Software"), to deal
7+
// in the Software without restriction, including without limitation the rights
8+
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9+
// copies of the Software, and to permit persons to whom the Software is
10+
// furnished to do so, subject to the following conditions:
11+
//
12+
// The above copyright notice and this permission notice shall be included in all
13+
// copies or substantial portions of the Software.
14+
//
15+
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16+
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17+
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18+
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19+
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20+
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21+
// SOFTWARE.
22+
23+
import XCTest
24+
@testable import BSGridCollectionViewLayout
25+
26+
class FirstIndexTests: XCTestCase {
27+
func testFirstIndexFirstRow() {
28+
let index = GridCollectionViewLayout.firstIndexInRow(0, withItemsPerRow: 3)
29+
XCTAssertEqual(index, 0)
30+
}
31+
32+
func testFirstIndexThirdRow() {
33+
let index = GridCollectionViewLayout.firstIndexInRow(3, withItemsPerRow: 3)
34+
XCTAssertEqual(index, 9)
35+
}
36+
}

‎Example/Tests/FirstRowTests.swift‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,58 @@
1+
// The MIT License (MIT)
2+
//
3+
// Copyright (c) 2016 Joakim Gyllström
4+
//
5+
// Permission is hereby granted, free of charge, to any person obtaining a copy
6+
// of this software and associated documentation files (the "Software"), to deal
7+
// in the Software without restriction, including without limitation the rights
8+
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9+
// copies of the Software, and to permit persons to whom the Software is
10+
// furnished to do so, subject to the following conditions:
11+
//
12+
// The above copyright notice and this permission notice shall be included in all
13+
// copies or substantial portions of the Software.
14+
//
15+
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16+
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17+
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18+
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19+
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20+
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21+
// SOFTWARE.
22+
23+
import UIKit
24+
import XCTest
25+
@testable import BSGridCollectionViewLayout
26+
27+
class FirstRowTests: XCTestCase {
28+
29+
func testFirstRowInZeroRect() {
30+
let firstRow = GridCollectionViewLayout.firstRowInRect(CGRectZero, withRowHeight: 100.0)
31+
XCTAssertEqual(firstRow, 0)
32+
}
33+
34+
func testFirstRowWithoutOffset() {
35+
let firstRow = GridCollectionViewLayout.firstRowInRect(CGRect(x: 0, y: 0, width: 100, height: 300), withRowHeight: 100.0)
36+
XCTAssertEqual(firstRow, 0)
37+
}
38+
39+
func testFirstRowWith1RowOffset() {
40+
let firstRow = GridCollectionViewLayout.firstRowInRect(CGRect(x: 0, y: 100, width: 100, height: 300), withRowHeight: 100.0)
41+
XCTAssertEqual(firstRow, 1)
42+
}
43+
44+
func testFirstRowWithHalfRowOffset() {
45+
let firstRow = GridCollectionViewLayout.firstRowInRect(CGRect(x: 0, y: 50, width: 100, height: 300), withRowHeight: 100.0)
46+
XCTAssertEqual(firstRow, 0)
47+
}
48+
49+
func testFirstRowWith2RowOffset() {
50+
let firstRow = GridCollectionViewLayout.firstRowInRect(CGRect(x: 0, y: 200, width: 100, height: 300), withRowHeight: 100.0)
51+
XCTAssertEqual(firstRow, 2)
52+
}
53+
54+
func testFirstRowWithNegativeRectOffset() {
55+
let firstRow = GridCollectionViewLayout.firstRowInRect(CGRect(x: 0, y: -200, width: 100, height: 300), withRowHeight: 100.0)
56+
XCTAssertEqual(firstRow, 0)
57+
}
58+
}

‎Example/Tests/LastIndexTests.swift‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
1+
// The MIT License (MIT)
2+
//
3+
// Copyright (c) 2016 Joakim Gyllström
4+
//
5+
// Permission is hereby granted, free of charge, to any person obtaining a copy
6+
// of this software and associated documentation files (the "Software"), to deal
7+
// in the Software without restriction, including without limitation the rights
8+
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9+
// copies of the Software, and to permit persons to whom the Software is
10+
// furnished to do so, subject to the following conditions:
11+
//
12+
// The above copyright notice and this permission notice shall be included in all
13+
// copies or substantial portions of the Software.
14+
//
15+
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16+
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17+
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18+
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19+
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20+
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21+
// SOFTWARE.
22+
23+
import XCTest
24+
@testable import BSGridCollectionViewLayout
25+
26+
class LastIndexTests: XCTestCase {
27+
func testLastIndexFirstRowLowNumberOfItems() {
28+
let index = GridCollectionViewLayout.lastIndexInRow(0, withItemsPerRow: 3, numberOfItems: 2)
29+
XCTAssertEqual(index, 1)
30+
}
31+
32+
func testLastIndexFirstRowMediumNumberOfItems() {
33+
let index = GridCollectionViewLayout.lastIndexInRow(0, withItemsPerRow: 3, numberOfItems: 6)
34+
XCTAssertEqual(index, 2)
35+
}
36+
37+
func testLastIndexFirstRowLargeNumberOfItems() {
38+
let index = GridCollectionViewLayout.lastIndexInRow(0, withItemsPerRow: 3, numberOfItems: 500)
39+
XCTAssertEqual(index, 2)
40+
}
41+
42+
func testLastIndexThirdRowLowNumberOfItems() {
43+
let index = GridCollectionViewLayout.lastIndexInRow(2, withItemsPerRow: 3, numberOfItems: 7)
44+
XCTAssertEqual(index, 6)
45+
}
46+
47+
func testLastIndexThirdRowMediumNumberOfItems() {
48+
let index = GridCollectionViewLayout.lastIndexInRow(2, withItemsPerRow: 3, numberOfItems: 8)
49+
XCTAssertEqual(index, 7)
50+
}
51+
52+
func testLastIndexThirdRowLargeNumberOfItems() {
53+
let index = GridCollectionViewLayout.lastIndexInRow(2, withItemsPerRow: 3, numberOfItems: 500)
54+
XCTAssertEqual(index, 8)
55+
}
56+
}

‎Example/Tests/LastRowTests.swift‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,86 @@
1+
// The MIT License (MIT)
2+
//
3+
// Copyright (c) 2016 Joakim Gyllström
4+
//
5+
// Permission is hereby granted, free of charge, to any person obtaining a copy
6+
// of this software and associated documentation files (the "Software"), to deal
7+
// in the Software without restriction, including without limitation the rights
8+
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9+
// copies of the Software, and to permit persons to whom the Software is
10+
// furnished to do so, subject to the following conditions:
11+
//
12+
// The above copyright notice and this permission notice shall be included in all
13+
// copies or substantial portions of the Software.
14+
//
15+
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16+
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17+
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18+
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19+
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20+
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21+
// SOFTWARE.
22+
23+
import XCTest
24+
@testable import BSGridCollectionViewLayout
25+
26+
class LastRowTests: XCTestCase {
27+
28+
func testLastRowInZeroRect() {
29+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRectZero, withRowHeight: 100, max: 3)
30+
XCTAssertEqual(lastRow, 0)
31+
}
32+
33+
func testLastRowWithoutOffsetSmallMax() {
34+
let max = 2
35+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 0, width: 100, height: 300), withRowHeight: 100, max: max)
36+
XCTAssertEqual(lastRow, 1)
37+
}
38+
39+
func testLastRowWithoutOffsetMediumMax() {
40+
let max = 3
41+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 0, width: 100, height: 300), withRowHeight: 100, max: max)
42+
XCTAssertEqual(lastRow, 2)
43+
}
44+
45+
func testLastRowWithoutOffsetLargeMax() {
46+
let max = 8
47+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 0, width: 100, height: 300), withRowHeight: 100, max: max)
48+
XCTAssertEqual(lastRow, 2)
49+
}
50+
51+
func testLastRowWith1RowOffsetSmallMax() {
52+
let max = 2
53+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 100, width: 100, height: 300), withRowHeight: 100, max: max)
54+
XCTAssertEqual(lastRow, 1)
55+
}
56+
57+
func testLastRowWith1RowOffsetMediumMax() {
58+
let max = 3
59+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 100, width: 100, height: 300), withRowHeight: 100, max: max)
60+
XCTAssertEqual(lastRow, 2)
61+
}
62+
63+
func testLastRowWith1RowOffsetLargeMax() {
64+
let max = 8
65+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 100, width: 100, height: 300), withRowHeight: 100, max: max)
66+
XCTAssertEqual(lastRow, 3)
67+
}
68+
69+
func testLastRowWithHalfRowOffsetSmallMax() {
70+
let max = 2
71+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 50, width: 100, height: 300), withRowHeight: 100, max: max)
72+
XCTAssertEqual(lastRow, 1)
73+
}
74+
75+
func testLastRowWithHalfRowOffsetMediumMax() {
76+
let max = 3
77+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 50, width: 100, height: 300), withRowHeight: 100, max: max)
78+
XCTAssertEqual(lastRow, 2)
79+
}
80+
81+
func testLastRowWithHalfRowOffsetLargeMax() {
82+
let max = 8
83+
let lastRow = GridCollectionViewLayout.lastRowInRect(CGRect(x: 0, y: 50, width: 100, height: 300), withRowHeight: 100, max: max)
84+
XCTAssertEqual(lastRow, 3)
85+
}
86+
}

‎Example/Tests/Tests.swift‎

Lines changed: 0 additions & 29 deletions
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