Add tests for opencas.py

Signed-off-by: Jan Musial <jan.musial@intel.com>

test/utils_tests/opencas-py-tests/test_casadm_01.py

@@ -0,0 +1,53 @@
+#
+# Copyright(c) 2012-2019 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+#
+
+import pytest
+import subprocess
+import mock
+
+from opencas import casadm
+from helpers import get_process_mock
+
+
+@mock.patch("subprocess.Popen")
+def test_run_cmd_01(mock_popen):
+    mock_popen.return_value = get_process_mock(0, "successes", "errors")
+    result = casadm.run_cmd(["casadm", "-L"])
+
+    assert result.exit_code == 0
+    assert result.stdout == "successes"
+    assert result.stderr == "errors"
+    mock_popen.assert_called_once_with(
+        ["casadm", "-L"], stdout=subprocess.PIPE, stderr=subprocess.PIPE
+    )
+
+
+@mock.patch("subprocess.Popen")
+def test_run_cmd_02(mock_popen):
+    mock_popen.return_value = get_process_mock(4, "successes", "errors")
+    with pytest.raises(casadm.CasadmError):
+        casadm.run_cmd(["casadm", "-L"])
+
+
+@mock.patch("subprocess.Popen")
+def test_get_version_01(mock_popen):
+    mock_popen.return_value = get_process_mock(0, "0.0.1", "errors")
+    result = casadm.get_version()
+
+    assert result.exit_code == 0
+    assert result.stdout == "0.0.1"
+    assert result.stderr == "errors"
+    mock_popen.assert_called_once_with(
+        [casadm.casadm_path, "--version", "--output-format", "csv"],
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+    )
+
+
+@mock.patch("subprocess.Popen")
+def test_get_version_02(mock_popen):
+    mock_popen.return_value = get_process_mock(4, "successes", "errors")
+    with pytest.raises(casadm.CasadmError):
+        casadm.get_version()