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Contents
import XCTest
@testable import CollatzConjecture
class CollatzConjectureTests: XCTestCase {
func testZeroStepsForOne() {
XCTAssertEqual(0, try CollatzConjecture.steps(1))
}
func testDivideIfEven() {
XCTAssertEqual(4, try CollatzConjecture.steps(16))
}
func testEvenAndOddSteps() {
XCTAssertEqual(9, try CollatzConjecture.steps(12))
}
func testLargeNumberOfEvenAndOddSteps() {
XCTAssertEqual(152, try CollatzConjecture.steps(1_000_000))
}
func testZeroIsAnError() {
XCTAssertThrowsError(try CollatzConjecture.steps(0))
}
func testNegativeValueIsAnError() {
XCTAssertThrowsError(try CollatzConjecture.steps(-15))
}
static var allTests: [(String, (CollatzConjectureTests) -> () throws -> Void)] {
return [
("testZeroStepsForOne", testZeroStepsForOne),
("testDivideIfEven", testDivideIfEven),
("testEvenAndOddSteps", testEvenAndOddSteps),
("testLargeNumberOfEvenAndOddSteps", testLargeNumberOfEvenAndOddSteps),
("testZeroIsAnError", testZeroIsAnError),
("testNegativeValueIsAnError", testNegativeValueIsAnError),
]
}
}
Version data entries
118 entries across 118 versions & 1 rubygems