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/*
This source file is part of the Swift.org open source project
Copyright (c) 2022 Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See https://swift.org/LICENSE.txt for license information
See https://swift.org/CONTRIBUTORS.txt for Swift project authors
*/
import XCTest
@testable import SwiftDocC
class GroupedSequenceTests: XCTestCase {
/// A grouped sequence of strings, with their number of characters as the key.
var groupedSequence = GroupedSequence<Int, String>(deriveKey: \.count)
func testAppends() {
groupedSequence.append("a")
groupedSequence.append("aa")
XCTAssertEqual(groupedSequence[1], "a")
XCTAssertEqual(groupedSequence[2], "aa")
groupedSequence.append("b")
XCTAssertEqual(groupedSequence[1], "b")
}
func testAppendContentsOf() {
groupedSequence.append(contentsOf: ["a", "aa"])
XCTAssertEqual(groupedSequence[1], "a")
XCTAssertEqual(groupedSequence[2], "aa")
}
func testIterator() {
groupedSequence.append(contentsOf: ["a", "aa"])
for (index, item) in groupedSequence.sorted().enumerated() {
switch index {
case 0:
XCTAssertEqual(item, "a")
case 1:
XCTAssertEqual(item, "aa")
default:
XCTFail("Unexpected number of items in the grouped sequence")
}
}
}
}
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