ArrayExtensionTests.swift

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

import Foundation
import Shared
import XCTest

class ArrayExtensionTests: XCTestCase {
    override func setUp() {
        super.setUp()
    }

    override func tearDown() {
        super.tearDown()
    }

    func testUnique() {
        let a = [1, 2, 3, 4, 5, 6, 1, 2]
        let result = a.unique { return $0 }
        XCTAssertEqual(result, [1, 2, 3, 4, 5, 6])

        let b = [1, 2, 3]
        let resultB = b.unique { return $0 }
        XCTAssertEqual(resultB, [1, 2, 3])
    }

    func testUnion() {
        let a = [1, 2, 3, 4, 5, 6]
        let b = [7, 8, 9, 10]
        XCTAssertEqual(a.union(b) { return $0 },
                       [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

        let c = [1, 2, 3, 4, 5, 6]
        let d = [4, 5, 6, 7, 8, 9, 10]
        XCTAssertEqual(c.union(d) { return $0 }, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

        let e = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
        let f = [4, 5, 6, 7, 8, 9, 10]
        XCTAssertEqual(e.union(f) { return $0 }, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

        let g = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
        let h = [Int]()
        XCTAssertEqual(g.union(h) { return $0 }, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

        let i = [Int]()
        let j = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
        XCTAssertEqual(i.union(j) { return $0 }, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
    }

    func testSameElements() {
        let k = [1, 2, 3, 4, 5]
        let l = [1, 2, 3, 4, 5]
        let m = [2, 4, 6, 8, 10]
        let n: [Int]?
        n = k
        XCTAssertTrue(k.sameElements(l))
        XCTAssertFalse(l.sameElements(m))
        XCTAssertTrue((n?.sameElements(k))!)
    }

}