QFile-test: Test for redirected handles in standard streams test.

This is similar to 2509a5b5a49ea52948b434578ff29e7f9ba60b40 in
Qt 5 (qtbase). In 4.8, stdout also seems to be affected, whereas
in Qt 5, the problem occurred for stdin.

Task-number: QTQAINFRA-428

Change-Id: Ia644923bdb76d0ac3c218c843fefcf280ee729cb
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>

1 files changed, 18 insertions, 7 deletions

diff --git a/tests/auto/qfile/tst_qfile.cpp b/tests/auto/qfile/tst_qfile.cpp
index 40534d3..5bed1e7 100644
--- a/tests/auto/qfile/tst_qfile.cpp
+++ b/tests/auto/qfile/tst_qfile.cpp
@@ -3194,29 +3194,34 @@ void tst_QFile::openStandardStreamsFileDescriptors()
     //it does not have functions to simply open them like below .
     QSKIP("Opening standard streams on Windows CE via descriptor not implemented", SkipAll);
 #endif
-    // Using file descriptors
+    /* in/out/err.isSequential() are only true when run in a console (CI);
+    * it is false when they are redirected from/to files.
+    * Prevent failures in case someone runs tests with stdout/stderr redirected. */
     {
         QFile in;
         in.open(STDIN_FILENO, QIODevice::ReadOnly);
+        if (!in.isSequential())
+            QSKIP("Standard input redirected.", SkipSingle);
         QCOMPARE( in.pos(), (qint64)0 );
         QCOMPARE( in.size(), (qint64)0 );
-        QVERIFY( in.isSequential() );
     }
 
     {
         QFile out;
         out.open(STDOUT_FILENO, QIODevice::WriteOnly);
+        if (!out.isSequential())
+            QSKIP("Standard output redirected.", SkipSingle);
         QCOMPARE( out.pos(), (qint64)0 );
         QCOMPARE( out.size(), (qint64)0 );
-        QVERIFY( out.isSequential() );
     }
 
     {
         QFile err;
         err.open(STDERR_FILENO, QIODevice::WriteOnly);
+        if (!err.isSequential())
+            QSKIP("Standard error redirected.", SkipSingle);
         QCOMPARE( err.pos(), (qint64)0 );
         QCOMPARE( err.size(), (qint64)0 );
-        QVERIFY( err.isSequential() );
     }
 }
 
@@ -3227,27 +3232,33 @@ void tst_QFile::openStandardStreamsBufferedStreams()
 #endif
     // Using streams
     {
+        /* in/out/err.isSequential() are only true when run in a console (CI);
+        * it is false when they are redirected from/to files.
+        * Prevent failures in case someone runs tests with stdout/stderr redirected. */
         QFile in;
         in.open(stdin, QIODevice::ReadOnly);
+        if (!in.isSequential())
+            QSKIP("Standard input redirected.", SkipSingle);
         QCOMPARE( in.pos(), (qint64)0 );
         QCOMPARE( in.size(), (qint64)0 );
-        QVERIFY( in.isSequential() );
     }
 
     {
         QFile out;
         out.open(stdout, QIODevice::WriteOnly);
+        if (!out.isSequential())
+            QSKIP("Standard output redirected.", SkipSingle);
         QCOMPARE( out.pos(), (qint64)0 );
         QCOMPARE( out.size(), (qint64)0 );
-        QVERIFY( out.isSequential() );
     }
 
     {
         QFile err;
         err.open(stderr, QIODevice::WriteOnly);
+        if (!err.isSequential())
+            QSKIP("Standard error redirected.", SkipSingle);
         QCOMPARE( err.pos(), (qint64)0 );
         QCOMPARE( err.size(), (qint64)0 );
-        QVERIFY( err.isSequential() );
     }
 }