//
// MIT License
// 
// Copyright (c) 2018-2019 Radix DLT ( https://radixdlt.com )
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//

import XCTest
@testable import RadixSDK

class NumberOfLeadingZeroBitsInDataTests: TestCase {

    func testCountNumberOfLeadingZeroBitsInData() {
        func doTest(data: DataConvertible, expectZeroCount: Int) {
            XCTAssertEqual(data.asData.countNumberOfLeadingZeroBits(), expectZeroCount)
        }
        doTest(data: Data(), expectZeroCount: 0)
        doTest(data: [0], expectZeroCount: 8)
        doTest(data: [1], expectZeroCount: 7)
        doTest(data: [255], expectZeroCount: 0)
        doTest(data: [0, 0], expectZeroCount: 16)
        doTest(data: [1, 0], expectZeroCount: 7)
        doTest(data: [0, 0, 0], expectZeroCount: 24)
        doTest(data: [1, 0, 0], expectZeroCount: 7)
        doTest(data: [255, 0, 0], expectZeroCount: 0)
        doTest(data: [0, 1, 0], expectZeroCount: 15)
        doTest(data: [0, 255, 0], expectZeroCount: 8)
        doTest(data: [0, 0, 0, 0], expectZeroCount: 32)
        doTest(data: [0, 0, 1, 0], expectZeroCount: 23)
        doTest(data: [0, 0, 0, 1], expectZeroCount: 31)
    }
}
