Stop using InputSource::unreadCh

1 files changed, 3 insertions, 15 deletions

diff --git a/libtests/closed_file_input_source.cc b/libtests/closed_file_input_source.cc
index f3e4f2ac..2d58cf80 100644
--- a/libtests/closed_file_input_source.cc
+++ b/libtests/closed_file_input_source.cc
@@ -27,22 +27,10 @@ void do_tests(InputSource* is)
     check("tell after findAndSkipNextEOL", 522 == is->tell());
     char b[1];
     b[0] = '\0';
-#ifdef _WIN32
-    // Empirical evidence, and the passage of the rest of the qpdf
-    // test suite, suggest that this is working on Windows in the way
-    // that it needs to work. If this ifdef is made to be true on
-    // Windows, it passes with ClosedFileInputSource but not with
-    // FileInputSource, which doesn't make any sense since
-    // ClosedFileInputSource is calling FileInputSource to do its
-    // work.
-    is->seek(521, SEEK_SET);
-    is->read(b, 1);
-#else
-    is->unreadCh('\n');
-    check("read unread character", 1 == is->read(b, 1));
+    is->seek(-1, SEEK_CUR);
+    check("read previous character", 1 == is->read(b, 1));
     check("got character", '\n' == b[0]);
-#endif
-    check("last offset after read unread", 521 == is->getLastOffset());
+    check("last offset after read previous", 521 == is->getLastOffset());
     is->seek(0, SEEK_END);
     check("tell at end", 556 == is->tell());
     is->seek(-25, SEEK_END);