Merge pull request #44 from phausler/flush_after_print

flush stdout after any printed test result

Author: Mike Ferris

Sources/XCTest/XCTestCase.swift

@@ -46,7 +46,7 @@ extension XCTestCase {
                     }
                 }
 
-                print("Test Case '\(method)' started.")
+                XCTPrint("Test Case '\(method)' started.")
 
                 setUp()
 
@@ -73,7 +73,7 @@ extension XCTestCase {
                     result = failures.count > 0 ? "failed" : "passed"
                 }
 
-                print("Test Case '\(method)' \(result) (\(printableStringForTimeInterval(duration)) seconds).")
+                XCTPrint("Test Case '\(method)' \(result) (\(printableStringForTimeInterval(duration)) seconds).")
                 XCTAllRuns.append(XCTRun(duration: duration, method: method, passed: failures.count == 0, failures: failures))
                 XCTFailureHandler = nil
             }
@@ -88,7 +88,7 @@ extension XCTestCase {
             failureSuffix = ""
         }
 
-        print("Executed \(tests.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(unexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
+        XCTPrint("Executed \(tests.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(unexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
     }
 
     public func setUp() {

Sources/XCTest/XCTestMain.swift

@@ -18,6 +18,11 @@ import Glibc
 import Darwin
 #endif
 
+internal func XCTPrint(items: Any..., separator: String = " ", terminator: String = "\n") {
+    print(items, separator: separator, terminator: terminator)
+    fflush(stdout)
+}
+
 struct XCTFailure {
     var message: String
     var failureDescription: String
@@ -26,7 +31,7 @@ struct XCTFailure {
     var line: UInt
 
     func emit(method: String) {
-        print("\(file):\(line): \(expected ? "" : "unexpected ")error: \(method) : \(failureDescription) - \(message)")
+        XCTPrint("\(file):\(line): \(expected ? "" : "unexpected ")error: \(method) : \(failureDescription) - \(message)")
     }
 }
 
@@ -62,7 +67,7 @@ internal struct XCTRun {
         failureSuffix = ""
     }
 
-    print("Total executed \(XCTAllRuns.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(totalUnexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
+    XCTPrint("Total executed \(XCTAllRuns.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(totalUnexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
     exit(totalFailures > 0 ? 1 : 0)
 }