55 lines
2.3 KiB
Swift
55 lines
2.3 KiB
Swift
//
|
|
// Copyright (c) 2017 Touch Instinct
|
|
//
|
|
// 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
|
|
|
|
class Double_RoundingTests: XCTestCase {
|
|
|
|
func testPositiveNumbers() {
|
|
let pi = 3.1415926
|
|
|
|
XCTAssertTrue(pi.roundValue(withPrecision: 0) == 3.0)
|
|
XCTAssertTrue(pi.roundValue(withPrecision: 1) == 3.1)
|
|
XCTAssertTrue(pi.roundValue(withPrecision: 2) == 3.14)
|
|
XCTAssertTrue(pi.roundValue(withPrecision: 3) == 3.142)
|
|
|
|
let some = 1.778297
|
|
XCTAssertTrue(some.roundValue(withPrecision: 1) == 1.8)
|
|
XCTAssertTrue(some.roundValue(withPrecision: 1, roundType: .down) == 1.7)
|
|
XCTAssertTrue(some.roundValue(withPrecision: 2, roundType: .down) == 1.77)
|
|
}
|
|
|
|
func testNegativeNumbers() {
|
|
let e = 2.7182
|
|
|
|
XCTAssertTrue(-e.roundValue(withPrecision: 0) == -3.0)
|
|
XCTAssertTrue(-e.roundValue(withPrecision: 1) == -2.7)
|
|
XCTAssertTrue(-e.roundValue(withPrecision: 2) == -2.72)
|
|
XCTAssertTrue(-e.roundValue(withPrecision: 3) == -2.718)
|
|
|
|
let some = -1.778297
|
|
XCTAssertTrue(some.roundValue(withPrecision: 1) == -1.8)
|
|
XCTAssertTrue(some.roundValue(withPrecision: 1, roundType: .down) == -1.8)
|
|
XCTAssertTrue(some.roundValue(withPrecision: 2, roundType: .down) == -1.78)
|
|
}
|
|
}
|