PackageManager: add info function. (#138)

* PackageManager: add info function.

Add info() to get package info.

* Fix tox deprecated travis section (#139)

* Fix tox deprecated travis section

* test-requirements remove attrs version limit

* PackageManager: add info function.

Add info() to get package info.

Author: myakove

rrmngmnt/package_manager.py

@@ -26,15 +26,15 @@ def is_available(cls, h):
         )
         return not rc
 
-    def _run_command_on_host(self, cmd):
+    def _execute_cmd(self, cmd):
         """
         Run given command on host
 
         Args:
             cmd (list): Command to run
 
         Returns:
-            bool: True, if command success, otherwise false
+            tuple or None: True, if command success, otherwise false
         """
         self.logger.info(
             "Execute command '%s' on host %s", " ".join(cmd), self.host
@@ -45,8 +45,40 @@ def _run_command_on_host(self, cmd):
                 "Failed to execute command '%s' on host %s; out: %s; err: %s",
                 " ".join(cmd), self.host, out, err
             )
-            return False
-        return True
+            return
+
+        return rc, out, err
+
+    def _run_command_on_host(self, cmd):
+        """
+        Run given command on host
+
+        Args:
+            cmd (list): Command to run
+
+        Returns:
+            bool: True, if command success, otherwise false
+        """
+        res = self._execute_cmd(cmd=cmd)
+        return bool(res)
+
+    def info(self, package):
+        """
+        Get package info
+
+        Args:
+            package (str): Name of package.
+
+        Returns:
+            str or None: package info or None.
+        """
+        if not self.exist_command_d:
+            raise NotImplementedError("There is no 'exist' command defined.")
+
+        cmd = list(self.exist_command_d)
+        cmd.append(package)
+        res = self._execute_cmd(cmd=cmd)
+        return res[1] if res else res
 
     def exist(self, package):
         """

tests/test_package_manager.py

@@ -133,6 +133,12 @@ def get_host(self, ip='1.1.1.1'):
     def get_pm(self):
         return self.get_host().package_manager
 
+    def test_info(self):
+        assert not self.get_pm().info(self.packages['installed_1'])
+
+    def test_info_negative(self):
+        assert not self.get_pm().info(self.packages['not_installed'])
+
     def test_exist(self):
         assert self.get_pm().exist(self.packages['installed_1'])