7a49a0fa82
This change also moves mutation to the ordered dictionary into a separate queue. There is no change to behavior yet because the queue is only dispatched to synchronously so far. Doing this forces changes to how database transactions are acquired since they must be used on the same queue where they orignated.
109 lines
3.3 KiB
Swift
109 lines
3.3 KiB
Swift
//
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// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import Foundation
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@testable import Signal
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private enum StringChange: CustomDebugStringConvertible, Equatable {
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var debugDescription: String {
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switch self {
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case .replace(let value): return "replace(\(value))"
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}
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}
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case replace(String)
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}
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enum Letter: Hashable {
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case a
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case b
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}
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class JournalingOrderedDictionaryTest: SignalBaseTest {
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func testPrepend() {
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var sut = JournalingOrderedDictionary<Letter, String, StringChange>()
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sut.prepend(key: .a, value: "a")
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sut.prepend(key: .b, value: "b")
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XCTAssertEqual(sut.orderedKeys, [.b, .a])
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XCTAssertEqual(sut[.b], "b")
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XCTAssertEqual(sut[.a], "a")
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XCTAssertEqual(sut[0].value, "b")
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XCTAssertEqual(sut[1].value, "a")
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XCTAssertEqual(sut.journal, [
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.prepend,
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.prepend])
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}
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func testAppend() {
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var sut = JournalingOrderedDictionary<Letter, String, StringChange>()
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sut.append(key: .a, value: "a")
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sut.append(key: .b, value: "b")
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XCTAssertEqual(sut.orderedKeys, [.a, .b])
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XCTAssertEqual(sut[.a], "a")
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XCTAssertEqual(sut[.b], "b")
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XCTAssertEqual(sut[0].value, "a")
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XCTAssertEqual(sut[1].value, "b")
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XCTAssertEqual(sut.journal, [
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.append,
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.append])
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}
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func testReplace() {
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var sut = JournalingOrderedDictionary<Letter, String, StringChange>()
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sut.append(key: .a, value: "a")
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sut.append(key: .b, value: "b")
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sut.replaceValue(at: sut.orderedKeys.firstIndex(of: .a)!,
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value: "A",
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changes: [.replace("A")])
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XCTAssertEqual(sut.orderedKeys, [.a, .b])
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XCTAssertEqual(sut[.a], "A")
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XCTAssertEqual(sut[.b], "b")
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XCTAssertEqual(sut[0].value, "A")
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XCTAssertEqual(sut[1].value, "b")
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XCTAssertEqual(sut.journal, [
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.append,
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.append,
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.modify(index: 0, changes: [.replace("A")])])
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}
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func testRemove() {
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var sut = JournalingOrderedDictionary<Letter, String, StringChange>()
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sut.append(key: .a, value: "a")
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sut.append(key: .b, value: "b")
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sut.remove(at: 0)
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XCTAssertEqual(sut.orderedKeys, [.b])
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XCTAssertEqual(sut[.b], "b")
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XCTAssertEqual(sut[0].value, "b")
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XCTAssertEqual(sut.journal, [
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.append,
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.append,
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.remove(index: 0)])
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}
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func testRemoveAll() {
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var sut = JournalingOrderedDictionary<Letter, String, StringChange>()
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sut.append(key: .a, value: "a")
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sut.append(key: .b, value: "b")
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sut.removeAll()
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XCTAssertEqual(sut.orderedKeys, [])
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XCTAssertEqual(sut.journal, [.removeAll])
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}
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func testTakeJournal() {
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var sut = JournalingOrderedDictionary<Letter, String, StringChange>()
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sut.append(key: .a, value: "a")
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sut.append(key: .b, value: "b")
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let journal = sut.takeJournal()
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XCTAssertEqual(journal, [.append, .append])
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XCTAssertEqual(sut.orderedKeys, [.a, .b])
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XCTAssertEqual(sut[.a], "a")
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XCTAssertEqual(sut[.b], "b")
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XCTAssertEqual(sut[0].value, "a")
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XCTAssertEqual(sut[1].value, "b")
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XCTAssertEqual(sut.journal, [])
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}
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}
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