replace more usages of assertTrue/False in tests

easybuild/base/testing.py

@@ -34,6 +34,7 @@
 * Kenneth Hoste (Ghent University)
 """
 import difflib
+import os
 import pprint
 import re
 import sys
@@ -117,6 +118,18 @@ def assertEqual(self, a, b, msg=None):
 
             raise AssertionError("%s:\nDIFF%s:\n%s" % (msg, limit, ''.join(diff[:self.ASSERT_MAX_DIFF])))
 
+    def assertExists(self, path, msg=None):
+        """Assert the given path exists"""
+        if msg is None:
+            msg = "'%s' should exist" % path
+        self.assertTrue(os.path.exists(path), msg)
+
+    def assertNotExists(self, path, msg=None):
+        """Assert the given path exists"""
+        if msg is None:
+            msg = "'%s' should not exist" % path
+        self.assertFalse(os.path.exists(path), msg)
+
     def setUp(self):
         """Prepare test case."""
         super(TestCase, self).setUp()

test/framework/build_log.py

@@ -388,26 +388,26 @@ def test_init_logging(self):
         tmp_logfile = os.path.join(self.test_prefix, 'test.log')
         log, logfile = init_logging(tmp_logfile, silent=True)
         self.assertEqual(logfile, tmp_logfile)
-        self.assertTrue(os.path.exists(logfile))
-        self.assertTrue(isinstance(log, EasyBuildLog))
+        self.assertExists(logfile)
+        self.assertIsInstance(log, EasyBuildLog)
 
         stop_logging(logfile)
 
         # no log provided, so create one (should be file in $TMPDIR)
         log, logfile = init_logging(None, silent=True)
-        self.assertTrue(os.path.exists(logfile))
+        self.assertExists(logfile)
         self.assertEqual(os.path.dirname(logfile), tmpdir)
-        self.assertTrue(isinstance(log, EasyBuildLog))
+        self.assertIsInstance(log, EasyBuildLog)
 
         stop_logging(logfile)
 
         # no problem with specifying a different directory to put log file in (even if it doesn't exist yet)
         tmp_logdir = os.path.join(self.test_prefix, 'tmp_logs')
-        self.assertFalse(os.path.exists(tmp_logdir))
+        self.assertNotExists(tmp_logdir)
 
         log, logfile = init_logging(None, silent=True, tmp_logdir=tmp_logdir)
         self.assertEqual(os.path.dirname(logfile), tmp_logdir)
-        self.assertTrue(isinstance(log, EasyBuildLog))
+        self.assertIsInstance(log, EasyBuildLog)
 
         stop_logging(logfile)
 
@@ -416,9 +416,9 @@ def test_init_logging(self):
         log, logfile = init_logging(None)
         stdout = self.get_stdout()
         self.mock_stdout(False)
-        self.assertTrue(os.path.exists(logfile))
+        self.assertExists(logfile)
         self.assertEqual(os.path.dirname(logfile), tmpdir)
-        self.assertTrue(isinstance(log, EasyBuildLog))
+        self.assertIsInstance(log, EasyBuildLog)
         self.assertTrue(stdout.startswith("== Temporary log file in case of crash"))
 
         stop_logging(logfile)
@@ -428,7 +428,7 @@ def test_init_logging(self):
         log, logfile = init_logging(None, logtostdout=True)
         self.mock_stdout(False)
         self.assertEqual(logfile, None)
-        self.assertTrue(isinstance(log, EasyBuildLog))
+        self.assertIsInstance(log, EasyBuildLog)
 
         stop_logging(logfile, logtostdout=True)
 

test/framework/config.py

@@ -341,8 +341,8 @@ def test_configuration_variables(self):
         cv1 = ConfigurationVariables()
         cv2 = ConfigurationVariables()
         cv3 = ConfigurationVariables({'foo': 'bar'})  # note: argument is ignored, an instance is already available
-        self.assertTrue(cv1 is cv2)
-        self.assertTrue(cv1 is cv3)
+        self.assertIs(cv1, cv2)
+        self.assertIs(cv1, cv3)
 
     def test_build_options(self):
         """Test usage of BuildOptions."""
@@ -353,8 +353,8 @@ def test_build_options(self):
         bo1 = BuildOptions()
         bo2 = BuildOptions()
         bo3 = BuildOptions({'foo': 'bar'})  # note: argument is ignored, an instance is already available
-        self.assertTrue(bo1 is bo2)
-        self.assertTrue(bo1 is bo3)
+        self.assertIs(bo1, bo2)
+        self.assertIs(bo1, bo3)
 
         # test basic functionality
         BuildOptions.__class__._instances.clear()
@@ -394,7 +394,7 @@ def test_build_options(self):
 
         # there should be only one BuildOptions instance
         bo2 = BuildOptions()
-        self.assertTrue(bo is bo2)
+        self.assertIs(bo, bo2)
 
     def test_XDG_CONFIG_env_vars(self):
         """Test effect of XDG_CONFIG* environment variables on default configuration."""

test/framework/containers.py

@@ -308,7 +308,7 @@ def test_end2end_singularity_image(self):
             ]
             self.check_regexs(regexs, stdout)
 
-            self.assertTrue(os.path.exists(os.path.join(containerpath, 'toy-0.0.%s' % ext)))
+            self.assertExists(os.path.join(containerpath, 'toy-0.0.%s' % ext))
 
             remove_file(os.path.join(containerpath, 'Singularity.toy-0.0'))
 
@@ -330,7 +330,7 @@ def test_end2end_singularity_image(self):
         self.check_regexs(regexs, stdout)
 
         cont_img = os.path.join(containerpath, 'foo-bar.img')
-        self.assertTrue(os.path.exists(cont_img))
+        self.assertExists(cont_img)
 
         remove_file(os.path.join(containerpath, 'Singularity.foo-bar'))
 
@@ -348,7 +348,7 @@ def test_end2end_singularity_image(self):
             "WARNING: overwriting existing container image at %s due to --force" % cont_img,
         ])
         self.check_regexs(regexs, stdout)
-        self.assertTrue(os.path.exists(cont_img))
+        self.assertExists(cont_img)
 
         # also check behaviour under --extended-dry-run
         args.append('--extended-dry-run')

test/framework/easyblock.py

@@ -85,12 +85,12 @@ def check_extra_options_format(extra_options):
             """Make sure extra_options value is of correct format."""
             # EasyBuild v2.0: dict with <string> keys and <list> values
             # (breaks backward compatibility compared to v1.x)
-            self.assertTrue(isinstance(extra_options, dict))  # conversion to a dict works
+            self.assertIsInstance(extra_options, dict)  # conversion to a dict works
             extra_options.items()
             extra_options.keys()
             extra_options.values()
             for key in extra_options.keys():
-                self.assertTrue(isinstance(extra_options[key], list))
+                self.assertIsInstance(extra_options[key], list)
                 self.assertEqual(len(extra_options[key]), 3)
 
         name = "pi"
@@ -201,7 +201,7 @@ def test_load_module(self):
 
         # we expect $TMPDIR to be tweaked by the prepare step (OpenMPI 2.x doesn't like long $TMPDIR values)
         tweaked_tmpdir = os.environ.get('TMPDIR')
-        self.assertTrue(tweaked_tmpdir != orig_tmpdir)
+        self.assertNotEqual(tweaked_tmpdir, orig_tmpdir)
 
         eb.make_module_step()
         eb.load_module()
@@ -233,7 +233,7 @@ def test_fake_module_load(self):
         if get_module_syntax() == 'Lua':
             pi_modfile += '.lua'
 
-        self.assertTrue(os.path.exists(pi_modfile))
+        self.assertExists(pi_modfile)
 
         # check whether temporary module file is marked as default
         if get_module_syntax() == 'Lua':
@@ -667,7 +667,7 @@ def test_make_module_extra(self):
         if get_module_syntax() == 'Lua':
             modpath += '.lua'
 
-        self.assertTrue(os.path.exists(modpath), "%s exists" % modpath)
+        self.assertExists(modpath)
         txt = read_file(modpath)
         patterns = [
             r"^prepend[-_]path.*TEST_PATH_VAR.*root.*foo",
@@ -1202,7 +1202,7 @@ def test_make_module_step(self):
         modpath = os.path.join(eb.make_module_step(), name, version)
         if get_module_syntax() == 'Lua':
             modpath += '.lua'
-        self.assertTrue(os.path.exists(modpath), "%s exists" % modpath)
+        self.assertExists(modpath)
 
         # verify contents of module
         txt = read_file(modpath)
@@ -1373,13 +1373,13 @@ def test_make_builddir(self):
         builddir = eb.builddir
         testfile = os.path.join(builddir, 'test123', 'foobar.txt')
         write_file(testfile, 'test123')
-        self.assertTrue(os.path.exists(testfile))
+        self.assertExists(testfile)
 
         eb.make_builddir()
         self.assertEqual(builddir, eb.builddir)
         # file is gone because directory was removed and re-created
-        self.assertFalse(os.path.exists(testfile))
-        self.assertFalse(os.path.exists(os.path.dirname(testfile)))
+        self.assertNotExists(testfile)
+        self.assertNotExists(os.path.dirname(testfile))
         self.assertEqual(os.listdir(eb.builddir), [])
 
         # make sure that build directory does *not* get re-created when we're building in installation directory
@@ -1391,7 +1391,7 @@ def test_make_builddir(self):
         builddir = eb.builddir
         testfile = os.path.join(builddir, 'test123', 'foobar.txt')
         write_file(testfile, 'test123')
-        self.assertTrue(os.path.exists(testfile))
+        self.assertExists(testfile)
         self.assertEqual(os.listdir(eb.builddir), ['test123'])
         self.assertEqual(os.listdir(os.path.join(eb.builddir, 'test123')), ['foobar.txt'])
 
@@ -1400,7 +1400,7 @@ def test_make_builddir(self):
         eb.make_builddir()
         eb.make_installdir()
         self.assertEqual(builddir, eb.builddir)
-        self.assertTrue(os.path.exists(testfile))
+        self.assertExists(testfile)
         self.assertEqual(os.listdir(eb.builddir), ['test123'])
         self.assertEqual(os.listdir(os.path.join(eb.builddir, 'test123')), ['foobar.txt'])
 
@@ -1409,8 +1409,8 @@ def test_make_builddir(self):
         eb.make_builddir()
         eb.make_installdir()
         self.assertEqual(builddir, eb.builddir)
-        self.assertFalse(os.path.exists(testfile))
-        self.assertFalse(os.path.exists(os.path.dirname(testfile)))
+        self.assertNotExists(testfile)
+        self.assertNotExists(os.path.dirname(testfile))
         self.assertEqual(os.listdir(eb.builddir), [])
 
     def test_get_easyblock_instance(self):
@@ -1420,7 +1420,7 @@ def test_get_easyblock_instance(self):
 
         ec = process_easyconfig(os.path.join(testdir, 'easyconfigs', 'test_ecs', 't', 'toy', 'toy-0.0.eb'))[0]
         eb = get_easyblock_instance(ec)
-        self.assertTrue(isinstance(eb, EB_toy))
+        self.assertIsInstance(eb, EB_toy)
 
         # check whether 'This is easyblock' log message is there
         tup = ('EB_toy', 'easybuild.easyblocks.toy', '.*test/framework/sandbox/easybuild/easyblocks/t/toy.pyc*')
@@ -1482,9 +1482,9 @@ def test_fetch_sources(self):
         self.assertEqual(len(eb.src), 3)
         for idx in range(3):
             self.assertEqual(eb.src[idx]['name'], expected_sources[idx])
-            self.assertTrue(os.path.exists(eb.src[idx]['path']))
+            self.assertExists(eb.src[idx]['path'])
             source_loc = os.path.join(toy_source_dir, expected_sources[idx])
-            self.assertTrue(os.path.exists(source_loc))
+            self.assertExists(source_loc)
             self.assertTrue(os.path.samefile(eb.src[idx]['path'], source_loc))
         self.assertEqual(eb.src[0]['cmd'], None)
         self.assertEqual(eb.src[1]['cmd'], "gunzip %s")
@@ -1750,7 +1750,7 @@ def test_obtain_file(self):
 
         # toy tarball was indeed re-downloaded to tmpdir
         self.assertEqual(res, os.path.join(tmpdir, 't', 'toy', toy_tarball))
-        self.assertTrue(os.path.exists(os.path.join(tmpdir, 't', 'toy', toy_tarball)))
+        self.assertExists(os.path.join(tmpdir, 't', 'toy', toy_tarball))
 
         # obtain_file yields error for non-existing files
         fn = 'thisisclearlyanonexistingfile'
@@ -1783,7 +1783,7 @@ def test_obtain_file(self):
             if res is not None:
                 loc = os.path.join(tmpdir, 't', 'toy', fn)
                 self.assertEqual(res, loc)
-                self.assertTrue(os.path.exists(loc), "%s file is found at %s" % (fn, loc))
+                self.assertExists(loc)
                 txt = read_file(loc)
                 eb_regex = re.compile("EasyBuild: building software with ease")
                 self.assertTrue(eb_regex.search(txt), "Pattern '%s' found in: %s" % (eb_regex.pattern, txt))
@@ -1833,7 +1833,7 @@ def test_collect_exts_file_info(self):
 
         exts_file_info = toy_eb.collect_exts_file_info()
 
-        self.assertTrue(isinstance(exts_file_info, list))
+        self.assertIsInstance(exts_file_info, list)
         self.assertEqual(len(exts_file_info), 4)
 
         self.assertEqual(exts_file_info[0], {'name': 'ls'})
@@ -1858,7 +1858,7 @@ def test_collect_exts_file_info(self):
         # location of files is missing when fetch_files is set to False
         exts_file_info = toy_eb.collect_exts_file_info(fetch_files=False, verify_checksums=False)
 
-        self.assertTrue(isinstance(exts_file_info, list))
+        self.assertIsInstance(exts_file_info, list)
         self.assertEqual(len(exts_file_info), 4)
 
         self.assertEqual(exts_file_info[0], {'name': 'ls'})
@@ -1897,7 +1897,7 @@ def test_obtain_file_extension(self):
         ext = ExtensionEasyBlock(toy_eb, test_ext)
         ext_src_path = ext.obtain_file(test_ext_src_fn)
         self.assertEqual(os.path.basename(ext_src_path), 'toy-0.0.tar.gz')
-        self.assertTrue(os.path.exists(ext_src_path))
+        self.assertExists(ext_src_path)
 
     def test_check_readiness(self):
         """Test check_readiness method."""
@@ -2135,7 +2135,7 @@ def test_guess_start_dir(self):
         ec = process_easyconfig(os.path.join(test_easyconfigs, 't', 'toy', 'toy-0.0.eb'))[0]
 
         cwd = os.getcwd()
-        self.assertTrue(os.path.exists(cwd))
+        self.assertExists(cwd)
 
         def check_start_dir(expected_start_dir):
             """Check start dir."""
@@ -2170,7 +2170,7 @@ def test_extension_set_start_dir(self):
         ec = process_easyconfig(os.path.join(test_easyconfigs, 't', 'toy', 'toy-0.0.eb'))[0]
 
         cwd = os.getcwd()
-        self.assertTrue(os.path.exists(cwd))
+        self.assertExists(cwd)
 
         def check_ext_start_dir(expected_start_dir):
             """Check start dir."""
@@ -2608,8 +2608,8 @@ def run_checks():
     def test_this_is_easybuild(self):
         """Test 'this_is_easybuild' function (and get_git_revision function used by it)."""
         # make sure both return a non-Unicode string
-        self.assertTrue(isinstance(get_git_revision(), str))
-        self.assertTrue(isinstance(this_is_easybuild(), str))
+        self.assertIsInstance(get_git_revision(), str)
+        self.assertIsInstance(this_is_easybuild(), str)
 
     def test_stale_module_caches(self):
         """Test whether module caches are reset between builds."""