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Add tests for Double extension 

Add `roundValue` test case
This commit is contained in:
Sasha Malina 2018-05-10 12:34:59 +03:00
parent f0fb443f6b
commit 538138ada5
2 changed files with 62 additions and 0 deletions
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8
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54
Tests/Extensions/Double+RoundingTests.swift Normal file
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@ -0,0 +1,54 @@
//
// 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)
}
}