Add tests for qpc credentials

Close #104

camayoc/tests/qcs/cli/__init__.py

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+"""Tests for quipucords' ``qpc`` command line interface."""

camayoc/tests/qcs/cli/conftest.py

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+"""Test utilities for quipucords' ``qpc`` tests."""
+from io import BytesIO
+
+import pexpect
+import pytest
+
+from camayoc.config import get_config
+
+
+@pytest.fixture()
+def qpc_server_config():
+    """Read Camayoc's configuration file and configure qpc.
+
+    Both hostname and port must be available on the configuration file, for
+    example::
+
+        qpc:
+          hostname: localhost
+          port: 8000
+    """
+    config = get_config()
+    hostname = config.get('qcs', {}).get('hostname')
+    port = config.get('qcs', {}).get('port')
+    if not all([hostname, port]):
+        raise ValueError(
+            'Both hostname and port must be defined under the qcs section on '
+            'the Camayoc\'s configuration file.')
+    command = 'qpc server config --host {} --port {}'.format(
+        hostname, port)
+    qpc_server_config = pexpect.spawn(command)
+    qpc_server_config.logfile = BytesIO()
+    assert qpc_server_config.expect(pexpect.EOF) == 0
+    qpc_server_config.close()
+    assert qpc_server_config.exitstatus == 0