tests: Add treeinfo test

(cherry picked from commit e8fd8a496b)

tests/pylorax/test_treeinfo.py

@@ -0,0 +1,56 @@
+#
+# Copyright (C) 2018 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+import unittest
+import tempfile
+import configparser
+import os
+
+from pylorax.treeinfo import TreeInfo
+
+class TreeInfoTest(unittest.TestCase):
+    def treeinfo_test(self):
+        with tempfile.NamedTemporaryFile() as f:
+            ti = TreeInfo("Lorax-Test", "1.0", "Server", "x86_64", "Packages")
+            ti.add_section("images", {"initrd": "images/pxeboot/initrd.img",
+                                      "kernel": "images/pxeboot/vmlinuz"})
+            ti.write(f.name)
+
+            config = configparser.ConfigParser()
+            config.read(f.name)
+
+            self.assertEqual(config.get("general", "family"), "Lorax-Test")
+            self.assertEqual(config.get("general", "version"), "1.0")
+            self.assertEqual(config.get("general", "name"), "Lorax-Test-1.0")
+            self.assertEqual(config.get("general", "variant"), "Server")
+            self.assertEqual(config.get("general", "arch"), "x86_64")
+            self.assertEqual(config.get("general", "packagedir"), "Packages")
+            self.assertTrue(config.get("general", "timestamp") not in ["", None])
+
+            self.assertEqual(config.get("images", "initrd"), "images/pxeboot/initrd.img")
+            self.assertEqual(config.get("images", "kernel"), "images/pxeboot/vmlinuz")
+
+    def source_time_test(self):
+        """Test treeinfo with SOURCE_DATE_EPOCH environmental variable set"""
+        os.environ["SOURCE_DATE_EPOCH"] = str(499137660)
+        with tempfile.NamedTemporaryFile() as f:
+            ti = TreeInfo("Lorax-Test", "1.0", "Server", "x86_64", "Packages")
+            ti.write(f.name)
+
+            config = configparser.ConfigParser()
+            config.read(f.name)
+
+            self.assertEqual(config.get("general", "timestamp"), str(499137660))