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authorLars Wirzenius <liw@liw.fi>2017-04-11 15:07:12 +0300
committerLars Wirzenius <liw@liw.fi>2017-04-11 15:21:18 +0300
commit18dcb5a598d29a4c0b4b08a5fc8362225886f319 (patch)
treeaec38773134ffa725adb3a02baa96c7ce08ac568
parent9cf8a7b2c43d0549cd2892b0af203b7c13cd0ba0 (diff)
downloadcmdtest-18dcb5a598d29a4c0b4b08a5fc8362225886f319.tar.gz
Add assertion functions
-rw-r--r--fail-tests/fail.stdout-diff2
-rw-r--r--yarnutils/__init__.py10
-rw-r--r--yarnutils/asserts.py66
-rw-r--r--yarnutils/asserts_tests.py68
4 files changed, 145 insertions, 1 deletions
diff --git a/fail-tests/fail.stdout-diff b/fail-tests/fail.stdout-diff
index 2ecb049..535b0c5 100644
--- a/fail-tests/fail.stdout-diff
+++ b/fail-tests/fail.stdout-diff
@@ -1,4 +1,4 @@
--- /dev/null 2017-04-10 10:01:11.280543905 +0300
-+++ fail-tests/fail.stdout-actual 2017-04-11 14:53:45.101520430 +0300
++++ fail-tests/fail.stdout-actual 2017-04-11 15:19:57.183651499 +0300
@@ -0,0 +1 @@
+this is not empty output to make test fail
diff --git a/yarnutils/__init__.py b/yarnutils/__init__.py
index 58f0236..ffcbaaa 100644
--- a/yarnutils/__init__.py
+++ b/yarnutils/__init__.py
@@ -18,3 +18,13 @@
from .vars import Variables
from .matches import get_next_match, set_env_for_matches
+from .asserts import (
+ AssertError,
+ assertTrue,
+ assertFalse,
+ assertEqual,
+ assertNotEqual,
+ assertGreaterThan,
+ assertLessThan,
+ assertIn,
+)
diff --git a/yarnutils/asserts.py b/yarnutils/asserts.py
new file mode 100644
index 0000000..aea055d
--- /dev/null
+++ b/yarnutils/asserts.py
@@ -0,0 +1,66 @@
+# Copyright 2017 Lars Wirzenius
+#
+# 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 3 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/>.
+#
+# =*= License: GPL-3+ =*=
+
+
+class AssertError(Exception):
+
+ pass
+
+
+def assertTrue(thing):
+ if not thing:
+ raise AssertError('expected {!r} to be true'.format(thing))
+
+
+def assertFalse(thing):
+ if thing:
+ raise AssertError('expected {!r} to be false'.format(thing))
+
+
+def assertEqual(a, b):
+ if a != b:
+ raise AssertError(
+ 'expected {!r} and {!r} to be equal, but they are not'.format(
+ a, b))
+
+
+def assertNotEqual(a, b):
+ if a == b:
+ raise AssertError(
+ 'expected {!r} and {!r} to be different, but they are not'.format(
+ a, b))
+
+
+def assertGreaterThan(a, b):
+ if a <= b:
+ raise AssertError(
+ 'expected {!r} > {!r}, but am disappoint'.format(
+ a, b))
+
+
+def assertLessThan(a, b):
+ if a >= b:
+ raise AssertError(
+ 'expected {!r} < {!r}, but am disappoint'.format(
+ a, b))
+
+
+def assertIn(a, b):
+ if a not in b:
+ raise AssertError(
+ 'expected {!r} in {!r}, but am disappoint'.format(
+ a, b))
diff --git a/yarnutils/asserts_tests.py b/yarnutils/asserts_tests.py
new file mode 100644
index 0000000..dd3d4e8
--- /dev/null
+++ b/yarnutils/asserts_tests.py
@@ -0,0 +1,68 @@
+# Copyright 2017 Lars Wirzenius
+#
+# 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 3 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/>.
+#
+# =*= License: GPL-3+ =*=
+
+
+import unittest
+
+import yarnutils
+
+
+class AssertTests(unittest.TestCase):
+
+ def test_true_and_false_work(self):
+ truths = [
+ True, 1, "notempty", [0], (0,), {'foo': 0},
+ ]
+ falsehoods = [
+ None, False, 0, "", [], {},
+ ]
+
+ for thing in truths:
+ yarnutils.assertTrue(thing)
+ with self.assertRaises(yarnutils.AssertError):
+ yarnutils.assertFalse(thing)
+
+ for thing in falsehoods:
+ yarnutils.assertFalse(thing)
+ with self.assertRaises(yarnutils.AssertError):
+ yarnutils.assertTrue(thing)
+
+ def test_equal_works(self):
+ yarnutils.assertEqual(0, 0)
+ with self.assertRaises(yarnutils.AssertError):
+ yarnutils.assertEqual("foo", None)
+
+ def test_not_equal_works(self):
+ yarnutils.assertNotEqual(0, 1)
+ with self.assertRaises(yarnutils.AssertError):
+ yarnutils.assertNotEqual(0, 0)
+
+ def test_gt_works(self):
+ yarnutils.assertGreaterThan(1, 0)
+ with self.assertRaises(yarnutils.AssertError):
+ yarnutils.assertGreaterThan(0, 1)
+
+ def test_lt_works(self):
+ yarnutils.assertLessThan(0, 1)
+ with self.assertRaises(yarnutils.AssertError):
+ yarnutils.assertLessThan(1, 0)
+
+ def test_in_works(self):
+ yarnutils.assertIn(0, [0])
+ with self.assertRaises(yarnutils.AssertError):
+ yarnutils.assertIn(0, [])
+ yarnutils.assertIn(0, [1, 2, 3])