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[5.5] Implement XCTAssertIdentical & XCTAssertNotIdentical #327

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Merged
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Aug 5, 2021
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[5.5] Implement XCTAssertIdentical & XCTAssertNotIdentical #327

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32 changes: 32 additions & 0 deletions Sources/XCTest/Public/XCTAssert.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,8 @@
private enum _XCTAssertion {
case equal
case equalWithAccuracy
case identical
case notIdentical
case greaterThan
case greaterThanOrEqual
case lessThan
Expand All @@ -32,6 +34,8 @@ private enum _XCTAssertion {
switch(self) {
case .equal: return "XCTAssertEqual"
case .equalWithAccuracy: return "XCTAssertEqual"
case .identical: return "XCTAssertIdentical"
case .notIdentical: return "XCTAssertNotIdentical"
case .greaterThan: return "XCTAssertGreaterThan"
case .greaterThanOrEqual: return "XCTAssertGreaterThanOrEqual"
case .lessThan: return "XCTAssertLessThan"
Expand Down Expand Up @@ -206,6 +210,34 @@ public func XCTAssertEqualWithAccuracy<T: FloatingPoint>(_ expression1: @autoclo
XCTAssertEqual(try expression1(), try expression2(), accuracy: accuracy, message(), file: file, line: line)
}

private func describe(_ object: AnyObject?) -> String {
return object == nil ? String(describing: object) : String(describing: object!)
}

/// Asserts that two values are identical.
public func XCTAssertIdentical(_ expression1: @autoclosure () throws -> AnyObject?, _ expression2: @autoclosure () throws -> AnyObject?, _ message: @autoclosure () -> String = "", file: StaticString = #filePath, line: UInt = #line) {
_XCTEvaluateAssertion(.identical, message: message(), file: file, line: line) {
let (value1, value2) = (try expression1(), try expression2())
if value1 === value2 {
return .success
} else {
return .expectedFailure("(\"\(describe(value1))\") is not identical to (\"\(describe(value2))\")")
}
}
}

/// Asserts that two values aren't identical.
public func XCTAssertNotIdentical(_ expression1: @autoclosure () throws -> AnyObject?, _ expression2: @autoclosure () throws -> AnyObject?, _ message: @autoclosure () -> String = "", file: StaticString = #filePath, line: UInt = #line) {
_XCTEvaluateAssertion(.notIdentical, message: message(), file: file, line: line) {
let (value1, value2) = (try expression1(), try expression2())
if value1 !== value2 {
return .success
} else {
return .expectedFailure("(\"\(describe(value1))\") is identical to (\"\(describe(value2))\")")
}
}
}

public func XCTAssertFalse(_ expression: @autoclosure () throws -> Bool, _ message: @autoclosure () -> String = "", file: StaticString = #file, line: UInt = #line) {
_XCTEvaluateAssertion(.`false`, message: message(), file: file, line: line) {
let value = try expression()
Expand Down
29 changes: 26 additions & 3 deletions Tests/Functional/FailureMessagesTestCase/main.swift
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Expand Up @@ -28,6 +28,8 @@ class FailureMessagesTestCase: XCTestCase {
("testAssertFalse", testAssertFalse),
("testAssertGreaterThan", testAssertGreaterThan),
("testAssertGreaterThanOrEqual", testAssertGreaterThanOrEqual),
("testAssertIdentical", testAssertIdentical),
("testAssertNotIdentical", testAssertNotIdentical),
("testAssertLessThan", testAssertLessThan),
("testAssertLessThanOrEqual", testAssertLessThanOrEqual),
("testAssertNil", testAssertNil),
Expand Down Expand Up @@ -121,6 +123,27 @@ class FailureMessagesTestCase: XCTestCase {
XCTAssertGreaterThanOrEqual(-1, 0, "message", file: "test.swift")
}

// CHECK: Test Case 'FailureMessagesTestCase.testAssertIdentical' started at \d+-\d+-\d+ \d+:\d+:\d+\.\d+
// CHECK: test.swift:[[@LINE+7]]: error: FailureMessagesTestCase.testAssertIdentical : XCTAssertIdentical failed: \("a"\) is not identical to \("b"\) - message
// CHECK: Test Case 'FailureMessagesTestCase.testAssertIdentical' failed \(\d+\.\d+ seconds\)
func testAssertIdentical() {
let object = XCTestExpectation()
XCTAssertIdentical(object, object)
XCTAssertIdentical(nil, nil)
XCTAssertIdentical(true as AnyObject, true as AnyObject)
XCTAssertIdentical("a" as AnyObject, "b" as AnyObject, "message", file: "test.swift")
}

// CHECK: Test Case 'FailureMessagesTestCase.testAssertNotIdentical' started at \d+-\d+-\d+ \d+:\d+:\d+\.\d+
// CHECK: test.swift:[[@LINE+6]]: error: FailureMessagesTestCase.testAssertNotIdentical : XCTAssertNotIdentical failed: \("nil"\) is identical to \("nil"\) - message
// CHECK: Test Case 'FailureMessagesTestCase.testAssertNotIdentical' failed \(\d+\.\d+ seconds\)
func testAssertNotIdentical() {
XCTAssertNotIdentical("a" as AnyObject, "b" as AnyObject)
XCTAssertNotIdentical(true as AnyObject, false as AnyObject)
XCTAssertNotIdentical(XCTestExpectation(), XCTestExpectation())
XCTAssertNotIdentical(nil, nil, "message", file: "test.swift")
}

// CHECK: Test Case 'FailureMessagesTestCase.testAssertLessThan' started at \d+-\d+-\d+ \d+:\d+:\d+\.\d+
// CHECK: test.swift:[[@LINE+3]]: error: FailureMessagesTestCase.testAssertLessThan : XCTAssertLessThan failed: \("0"\) is not less than \("0"\) - message
// CHECK: Test Case 'FailureMessagesTestCase.testAssertLessThan' failed \(\d+\.\d+ seconds\)
Expand Down Expand Up @@ -213,11 +236,11 @@ class FailureMessagesTestCase: XCTestCase {
}
}
// CHECK: Test Suite 'FailureMessagesTestCase' failed at \d+-\d+-\d+ \d+:\d+:\d+\.\d+
// CHECK: \t Executed 24 tests, with 24 failures \(0 unexpected\) in \d+\.\d+ \(\d+\.\d+\) seconds
// CHECK: \t Executed 26 tests, with 26 failures \(0 unexpected\) in \d+\.\d+ \(\d+\.\d+\) seconds

XCTMain([testCase(FailureMessagesTestCase.allTests)])

// CHECK: Test Suite '.*\.xctest' failed at \d+-\d+-\d+ \d+:\d+:\d+\.\d+
// CHECK: \t Executed 24 tests, with 24 failures \(0 unexpected\) in \d+\.\d+ \(\d+\.\d+\) seconds
// CHECK: \t Executed 26 tests, with 26 failures \(0 unexpected\) in \d+\.\d+ \(\d+\.\d+\) seconds
// CHECK: Test Suite 'All tests' failed at \d+-\d+-\d+ \d+:\d+:\d+\.\d+
// CHECK: \t Executed 24 tests, with 24 failures \(0 unexpected\) in \d+\.\d+ \(\d+\.\d+\) seconds
// CHECK: \t Executed 26 tests, with 26 failures \(0 unexpected\) in \d+\.\d+ \(\d+\.\d+\) seconds