Merge pull request #582 from Quick/swiftlint-force_try

[SwiftLint] Remove force_try from disabled_rules

Author: phatblat

.swiftlint.yml

@@ -1,6 +1,5 @@
 disabled_rules:
   - todo
-  - force_try
 
 included:
   - Sources

Sources/Nimble/Adapters/AssertionRecorder.swift

@@ -37,21 +37,48 @@ public class AssertionRecorder: AssertionHandler {
     }
 }
 
+extension NMBExceptionCapture {
+    internal func tryBlockThrows(_ unsafeBlock: () throws -> Void) throws {
+        var catchedError: Error?
+        tryBlock {
+            do {
+                try unsafeBlock()
+            } catch {
+                catchedError = error
+            }
+        }
+        if let error = catchedError {
+            throw error
+        }
+    }
+}
+
 /// Allows you to temporarily replace the current Nimble assertion handler with
 /// the one provided for the scope of the closure.
 ///
 /// Once the closure finishes, then the original Nimble assertion handler is restored.
 ///
 /// @see AssertionHandler
-public func withAssertionHandler(_ tempAssertionHandler: AssertionHandler, closure: () throws -> Void) {
+public func withAssertionHandler(_ tempAssertionHandler: AssertionHandler,
+                                 file: FileString = #file,
+                                 line: UInt = #line,
+                                 closure: () throws -> Void) {
     let environment = NimbleEnvironment.activeInstance
     let oldRecorder = environment.assertionHandler
     let capturer = NMBExceptionCapture(handler: nil, finally: ({
         environment.assertionHandler = oldRecorder
     }))
     environment.assertionHandler = tempAssertionHandler
-    capturer.tryBlock {
-        try! closure()
+
+    do {
+        try capturer.tryBlockThrows {
+            try closure()
+        }
+    } catch {
+        let failureMessage = FailureMessage()
+        failureMessage.stringValue = "unexpected error thrown: <\(error)>"
+        let location = SourceLocation(file: file, line: line)
+        tempAssertionHandler.assert(false, message: failureMessage, location: location)
     }
 }
 

Sources/Nimble/Adapters/NMBExpectation.swift

@@ -15,13 +15,15 @@ internal struct ObjCMatcherWrapper: Matcher {
 
     func matches(_ actualExpression: Expression<NSObject>, failureMessage: FailureMessage) -> Bool {
         return matcher.matches(
+            // swiftlint:disable:next force_try
             ({ try! actualExpression.evaluate() }),
             failureMessage: failureMessage,
             location: actualExpression.location)
     }
 
     func doesNotMatch(_ actualExpression: Expression<NSObject>, failureMessage: FailureMessage) -> Bool {
         return matcher.doesNotMatch(
+            // swiftlint:disable:next force_try
             ({ try! actualExpression.evaluate() }),
             failureMessage: failureMessage,
             location: actualExpression.location)

Sources/Nimble/Matchers/AllPass.swift

@@ -103,6 +103,7 @@ extension NMBObjCMatcher {
                 } else {
                     let failureMessage = FailureMessage()
                     let result = matcher.matches(
+                        // swiftlint:disable:next force_try
                         ({ try! expr.evaluate() }),
                         failureMessage: failureMessage,
                         location: expr.location

Sources/Nimble/Matchers/RaisesException.swift

@@ -24,9 +24,13 @@ public func raiseException(
                 exception = e
             }), finally: nil)
 
-            capture.tryBlock {
-                _ = try! actualExpression.evaluate()
-                return
+            do {
+                try capture.tryBlockThrows {
+                    _ = try actualExpression.evaluate()
+                }
+            } catch {
+                failureMessage.stringValue = "unexpected error thrown: <\(error)>"
+                return false
             }
 
             setFailureMessageForException(

Sources/Nimble/Matchers/SatisfyAllOf.swift

@@ -60,8 +60,12 @@ extension NMBObjCMatcher {
                         return predicate.satisfies({ try expression.evaluate() }, location: actualExpression.location).toSwift()
                     } else {
                         let failureMessage = FailureMessage()
-                        // swiftlint:disable:next line_length
-                        let success = matcher.matches({ try! expression.evaluate() }, failureMessage: failureMessage, location: actualExpression.location)
+                        let success = matcher.matches(
+                            // swiftlint:disable:next force_try
+                            { try! expression.evaluate() },
+                            failureMessage: failureMessage,
+                            location: actualExpression.location
+                        )
                         return PredicateResult(bool: success, message: failureMessage.toExpectationMessage())
                     }
                 }

Sources/Nimble/Matchers/SatisfyAnyOf.swift

@@ -68,8 +68,12 @@ extension NMBObjCMatcher {
                         return predicate.satisfies({ try expression.evaluate() }, location: actualExpression.location).toSwift()
                     } else {
                         let failureMessage = FailureMessage()
-                        // swiftlint:disable:next line_length
-                        let success = matcher.matches({ try! expression.evaluate() }, failureMessage: failureMessage, location: actualExpression.location)
+                        let success = matcher.matches(
+                            // swiftlint:disable:next force_try
+                            { try! expression.evaluate() },
+                            failureMessage: failureMessage,
+                            location: actualExpression.location
+                        )
                         return PredicateResult(bool: success, message: failureMessage.toExpectationMessage())
                     }
                 }

Tests/NimbleTests/Helpers/utils.swift

@@ -8,7 +8,7 @@ func failsWithErrorMessage(_ messages: [String], file: FileString = #file, line:
     var lineNumber = line
 
     let recorder = AssertionRecorder()
-    withAssertionHandler(recorder, closure: closure)
+    withAssertionHandler(recorder, file: file, line: line, closure: closure)
 
     for msg in messages {
         var lastFailure: AssertionRecord?