1 files changed, 52 insertions, 0 deletions
diff --git a/test/libapt/extracttar_test.cc b/test/libapt/extracttar_test.cc
new file mode 100644
index 0000000..246aea7
--- /dev/null
+++ b/test/libapt/extracttar_test.cc
@@ -0,0 +1,52 @@
+#include <config.h>
+
+#include <apt-pkg/dirstream.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/extracttar.h>
+#include <cstdlib>
+#include <iostream>
+
+#include "assert.h"
+#include <gtest/gtest.h>
+
+class Stream : public pkgDirStream
+{
+   public:
+    int count;
+    Stream () { count = 0; }
+    bool DoItem(Item &Itm,int &Fd) APT_OVERRIDE { (void)Itm; (void)Fd; count++; return true; }
+    bool Fail(Item &Itm,int Fd) APT_OVERRIDE { (void)Itm; (void)Fd; return true; }
+    bool FinishedFile(Item &Itm,int Fd) APT_OVERRIDE { (void)Itm; (void)Fd; return true; }
+    ~Stream() {}
+};
+
+TEST(ExtractTar, ExtractTar)
+{
+   FileFd tgz;
+   ASSERT_NE(nullptr, GetTempFile("extracttar", false, &tgz));
+   ASSERT_TRUE(tgz.Close());
+   ASSERT_FALSE(tgz.Name().empty());
+   // FIXME: We should do the right thing… but its a test and nobody will ever…
+   // Proposal: The first one who sees this assert fail will have to write a patch.
+   ASSERT_EQ(std::string::npos, tgz.Name().find('\''));
+   EXPECT_EQ(0, system(("tar c /etc/passwd 2>/dev/null | gzip > " + tgz.Name()).c_str()));
+
+    FileFd fd(tgz.Name(), FileFd::ReadOnly);
+    RemoveFile("ExtractTarTest", tgz.Name());
+    ASSERT_TRUE(fd.IsOpen());
+    ExtractTar tar(fd, -1, "gzip");
+
+    // Run multiple times, because we want to check not only that extraction
+    // works, but also that it works multiple times (important for python-apt)
+    for (int i = 0; i < 5; i++) {
+       SCOPED_TRACE(i);
+        Stream stream;
+        fd.Seek(0);
+        tar.Go(stream);
+        if (_error->PendingError()) {
+            _error->DumpErrors();
+            EXPECT_FALSE(true);
+        }
+        EXPECT_EQ(stream.count, 1);
+    }
+}