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Revert #9 (#11)
* Revert #9 Fixes #10. * wip
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‎Sources/XCTestDynamicOverlay/XCTFail.swift‎

Lines changed: 79 additions & 57 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,77 @@
1-
#if canImport(ObjectiveC)
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import Foundation
3-
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#if DEBUG
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#if canImport(ObjectiveC)
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import Foundation
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/// This function generates a failure immediately and unconditionally.
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///
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/// Dynamically creates and records an `XCTIssue` under the hood that captures the source code
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/// context of the caller. Useful for defining assertion helpers that fail in indirect code
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/// paths, where the `file` and `line` of the failure have not been realized.
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///
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/// - Parameter message: An optional description of the assertion, for inclusion in test
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/// results.
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public func XCTFail(_ message: String = "") {
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if let XCTestObservationCenter = NSClassFromString("XCTestObservationCenter")
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as Any as? NSObjectProtocol,
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String(describing: XCTestObservationCenter) != "<null>",
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let shared = XCTestObservationCenter.perform(Selector(("sharedTestObservationCenter")))?
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.takeUnretainedValue(),
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let observers = shared.perform(Selector(("observers")))?
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.takeUnretainedValue() as? [AnyObject],
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let observer =
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observers
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.first(where: { NSStringFromClass(type(of: $0)) == "XCTestMisuseObserver" }),
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let currentTestCase = observer.perform(Selector(("currentTestCase")))?
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.takeUnretainedValue(),
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let XCTIssue = NSClassFromString("XCTIssue")
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as Any as? NSObjectProtocol,
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let alloc = XCTIssue.perform(NSSelectorFromString("alloc"))?
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.takeUnretainedValue(),
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let issue =
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alloc
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.perform(
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Selector(("initWithType:compactDescription:")),
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with: 0,
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with: message.isEmpty ? "failed" : message
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)?
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.takeUnretainedValue()
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{
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_ = currentTestCase.perform(Selector(("recordIssue:")), with: issue)
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return
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}
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}
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/// This function generates a failure immediately and unconditionally.
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///
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/// Dynamically calls `XCTFail` with the given file and line. Useful for defining assertion
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/// helpers that have the source code context at hand and want to highlight the direct caller
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/// of the helper.
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///
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/// - Parameter message: An optional description of the assertion, for inclusion in test
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/// results.
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public func XCTFail(_ message: String = "", file: StaticString, line: UInt) {
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guard let _XCTFailureHandler = _XCTFailureHandler
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else { return }
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_XCTFailureHandler(nil, true, "\(file)", line, "\(message.isEmpty ? "failed" : message)", nil)
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}
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private typealias XCTFailureHandler = @convention(c) (
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AnyObject?, Bool, UnsafePointer<CChar>, UInt, String, String?
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) -> Void
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private let XCTest = NSClassFromString("XCTest")
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.flatMap(Bundle.init(for:))
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.flatMap { $0.executablePath }
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.flatMap { dlopen($0, RTLD_NOW) }
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private let _XCTFailureHandler =
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XCTest
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.flatMap { dlsym($0, "_XCTFailureHandler") }
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.map { unsafeBitCast($0, to: XCTFailureHandler.self) }
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#else
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// NB: It seems to be safe to import XCTest on Linux
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@_exported import func XCTest.XCTFail
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#endif
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#else
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/// This function generates a failure immediately and unconditionally.
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///
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/// Dynamically creates and records an `XCTIssue` under the hood that captures the source code
@@ -9,64 +80,15 @@
980
///
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/// - Parameter message: An optional description of the assertion, for inclusion in test
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/// results.
12-
public func XCTFail(_ message: String = "") {
13-
if let XCTestObservationCenter = NSClassFromString("XCTestObservationCenter")
14-
as Any as? NSObjectProtocol,
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String(describing: XCTestObservationCenter) != "<null>",
16-
let shared = XCTestObservationCenter.perform(Selector(("sharedTestObservationCenter")))?
17-
.takeUnretainedValue(),
18-
let observers = shared.perform(Selector(("observers")))?
19-
.takeUnretainedValue() as? [AnyObject],
20-
let observer =
21-
observers
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.first(where: { NSStringFromClass(type(of: $0)) == "XCTestMisuseObserver" }),
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let currentTestCase = observer.perform(Selector(("currentTestCase")))?
24-
.takeUnretainedValue(),
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let XCTIssue = NSClassFromString("XCTIssue")
26-
as Any as? NSObjectProtocol,
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let alloc = XCTIssue.perform(NSSelectorFromString("alloc"))?
28-
.takeUnretainedValue(),
29-
let issue =
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alloc
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.perform(
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Selector(("initWithType:compactDescription:")),
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with: 0,
34-
with: message.isEmpty ? "failed" : message
35-
)?
36-
.takeUnretainedValue()
37-
{
38-
_ = currentTestCase.perform(Selector(("recordIssue:")), with: issue)
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return
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}
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}
83+
public func XCTFail(_ message: String = "") {}
4284

4385
/// This function generates a failure immediately and unconditionally.
4486
///
45-
/// Dynamically calls `XCTFail` with the given file and line. Useful for defining assertion
46-
/// helpers that have the source code context at hand and want to highlight the direct caller
47-
/// of the helper.
87+
/// Dynamically creates and records an `XCTIssue` under the hood that captures the source code
88+
/// context of the caller. Useful for defining assertion helpers that fail in indirect code
89+
/// paths, where the `file` and `line` of the failure have not been realized.
4890
///
4991
/// - Parameter message: An optional description of the assertion, for inclusion in test
5092
/// results.
51-
public func XCTFail(_ message: String = "", file: StaticString, line: UInt) {
52-
guard let _XCTFailureHandler = _XCTFailureHandler
53-
else { return }
54-
55-
_XCTFailureHandler(nil, true, "\(file)", line, "\(message.isEmpty ? "failed" : message)", nil)
56-
}
57-
58-
private typealias XCTFailureHandler = @convention(c) (
59-
AnyObject?, Bool, UnsafePointer<CChar>, UInt, String, String?
60-
) -> Void
61-
private let XCTest = NSClassFromString("XCTest")
62-
.flatMap(Bundle.init(for:))
63-
.flatMap { $0.executablePath }
64-
.flatMap { dlopen($0, RTLD_NOW) }
65-
private let _XCTFailureHandler =
66-
XCTest
67-
.flatMap { dlsym($0, "_XCTFailureHandler") }
68-
.map { unsafeBitCast($0, to: XCTFailureHandler.self) }
69-
#else
70-
// NB: It seems to be safe to import XCTest on Linux
71-
@_exported import func XCTest.XCTFail
93+
public func XCTFail(_ message: String = "", file: StaticString, line: UInt) {}
7294
#endif

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