[gparted] Update PipeCaptureTest.MinimalBinaryCrash777973 expected string (#777973)

[Curtis Gedak <gedakc src gnome org>]

commit 0a3e8487a07243528219dc8b79be561cc7f845c7
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Thu May 25 19:52:24 2017 +0100

    Update PipeCaptureTest.MinimalBinaryCrash777973 expected string (#777973)
    
    PipeCapture::OnReadable() has been almost completely re-written but this
    test is still failing thus:
    
        $ ./test_PipeCapture
        ...
        [ RUN      ] PipeCaptureTest.MinimalBinaryCrash777973
        test_PipeCapture.cc:313: Failure
              Expected: inputstr
             Of length: 27
        To be equal to: capturedstr.raw()
             Of length: 26
        With first binary difference:
        < 0x00000010  "...!......."       A9 C2 A0 21 E2 95 9F E2 88 A9 C2
        --
        > 0x00000010  "...!......"        A9 C2 A0 21 E2 95 9F E2 88 A9
        [  FAILED  ] PipeCaptureTest.MinimalBinaryCrash777973 (0 ms)
        ...
    
    The OnReadable() code specifically skips invalid bytes which aren't part
    of valid UTF-8 characters, because they can't be displayed to the user.
    The final C2 byte is the start of a multi-byte UTF-8 character, so on
    it's own is invalid.  Therefore PipeCapture skips it.  Update expected
    string accordingly.  Now the test passes.
    
    Bug 777973 - Segmentation fault on bad disk

 tests/test_PipeCapture.cc |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/tests/test_PipeCapture.cc b/tests/test_PipeCapture.cc
index 332b38d..3808e28 100644
--- a/tests/test_PipeCapture.cc
+++ b/tests/test_PipeCapture.cc
@@ -18,7 +18,8 @@
  *
  * All the tests work by creating a pipe(3) and using a separate thread to write data into
  * the pipe with PipeCapture running in the initial thread.  Captured data is then checked
- * that it matches the input.
+ * that it either matches the input or different expected output depending on the features
+ * being tested.
  */
 
 #include "PipeCapture.h"
@@ -156,6 +157,7 @@ protected:
        static const size_t WriterFD = 1;
 
        std::string inputstr;
+       std::string expectedstr;
        Glib::ustring capturedstr;
        bool eof_signalled;
        unsigned update_signalled;
@@ -315,7 +317,10 @@ TEST_F( PipeCaptureTest, MinimalBinaryCrash777973 )
        pc.signal_eof.connect( sigc::mem_fun( *this, &PipeCaptureTest::eof_callback ) );
        pc.connect_signal();
        run_writer_thread();
-       EXPECT_BINARYSTRINGEQ( inputstr, capturedstr.raw() );
+       // Final \xC2 byte is part of an incomplete UTF-8 character so will be skipped by
+       // PipeCapture.
+       expectedstr = "/LOST.DIR/!\xE2\x95\x9F\xE2\x88\xA9\xC2\xA0!\xE2\x95\x9F\xE2\x88\xA9";
+       EXPECT_BINARYSTRINGEQ( expectedstr, capturedstr.raw() );
        EXPECT_TRUE( eof_signalled );
 }