Add case-insensitive name clash test

test/easyconfigs/easyconfigs.py

@@ -33,6 +33,7 @@
 import shutil
 import sys
 import tempfile
+from collections import defaultdict
 from distutils.version import LooseVersion
 from unittest import TestCase, TestLoader, main, skip
 
@@ -926,6 +927,27 @@ def test_easyconfig_locations(self):
                     if not (dirpath.endswith('/easybuild/easyconfigs') and filenames == ['TEMPLATE.eb']):
                         self.assertTrue(False, "List of easyconfig files in %s is empty: %s" % (dirpath, filenames))
 
+    def test_easyconfig_name_clashes(self):
+        """Make sure there is not a name clash when all names are lowercase"""
+        topdir = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+        names = defaultdict(list)
+        for (dirpath, _, _) in os.walk(topdir):
+            # ignore git/svn dirs & archived easyconfigs
+            if '/.git/' in dirpath or '/.svn/' in dirpath or '__archive__' in dirpath:
+                continue
+            dirpath_split = dirpath.replace(topdir, '').split(os.sep)
+            if len(dirpath_split) == 5:
+                name = dirpath_split[4]
+                names[name.lower()].append(name)
+
+        duplicates = {}
+        for name in names:
+            if len(names[name]) > 1:
+                duplicates[name] = names[name]
+
+        if duplicates:
+            self.assertTrue(False, "EasyConfigs with case-insensitive name clash: %s" % duplicates)
+
     @skip_if_not_pr_to_non_main_branch()
     def test_pr_sha256_checksums(self):
         """Make sure changed easyconfigs have SHA256 checksums in place."""