[archive] Don't shell out for compressing the archive

As sos is now python3-only, we can avoid shelling-out to compression
utilities like `xz` or `gzip`, and instead use the method provided by
the built-in `tarfile` module.

Resolves: #2523

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/report_tests/compression_tests.py b/tests/report_tests/compression_tests.py
new file mode 100644
index 00000000..95fba481
--- /dev/null
+++ b/tests/report_tests/compression_tests.py
@@ -0,0 +1,35 @@
+# This file is part of the sos project: https://github.com/sosreport/sos
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions of
+# version 2 of the GNU General Public License.
+#
+# See the LICENSE file in the source distribution for further information.
+
+
+from sos_tests import StageOneReportTest
+
+
+class AutoCompressionTest(StageOneReportTest):
+    """Tests to ensure that 'auto' defaults to lzma, as it is in the standard
+    library
+
+    :avocado: tags=stageone
+    """
+
+    sos_cmd = '-o kernel -z auto'
+
+    def test_lzma_compressed(self):
+        self.assertTrue(self.archive.endswith('.tar.xz'))
+
+
+class GzipCompressionTest(StageOneReportTest):
+    """Tests to ensure that users can manually specify the use of gzip
+
+    :avocado: tags=stageone
+    """
+
+    sos_cmd = '-o kernel -z gzip'
+
+    def test_gzip_compressed(self):
+        self.assertTrue(self.archive.endswith('.tar.gz'))