diff --git a/tests/conftest.py b/tests/conftest.py
index 669709f..0626a1f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -76,6 +76,11 @@ def file_exists(self, path: str) -> bool:
         result = self.run(f"test -f {shlex.quote(path)}")
         return result.returncode == 0
 
+    def file_executable(self, path: str) -> bool:
+        """Check if a file exists and is executable."""
+        result = self.run(f"test -x {shlex.quote(path)}")
+        return result.returncode == 0
+
     def dir_exists(self, path: str) -> bool:
         """Check if a directory exists."""
         result = self.run(f"test -d {shlex.quote(path)}")
diff --git a/tests/test_common.py b/tests/test_common.py
index 2346c73..91ea207 100644
--- a/tests/test_common.py
+++ b/tests/test_common.py
@@ -67,6 +67,18 @@ def test_workdir_writable(container):
     assert result.returncode == 0
 
 
+def test_fix_permissions_executable(container):
+    """Verify fix-permissions script is installed and executable.
+
+    This script is critical for OpenShift compatibility, it ensures GID 0
+    group write access on directories. If accidentally removed or with wrong
+    permissions, downstream images break at runtime with permission errors.
+    """
+    assert container.file_executable("/usr/local/bin/fix-permissions"), (
+        "/usr/local/bin/fix-permissions must exist and be executable"
+    )
+
+
 # --- Configuration Tests ---
 
 
@@ -81,6 +93,16 @@ def test_pip_conf_valid(container):
     assert "[global]" in result.stdout, "pip.conf missing [global] section"
 
 
+def test_pip_index_url_configured(container):
+    """Verify pip global.index-url is configured"""
+    result = container.run("pip config --global get global.index-url")
+    assert result.returncode == 0, (
+        "pip global.index-url is not set — expected an index-url in /etc/pip.conf"
+    )
+    index_url = result.stdout.strip()
+    assert index_url, "pip global.index-url is set but empty"
+
+
 def test_uv_toml_exists(container):
     """Verify uv configuration file exists."""
     assert container.file_exists("/etc/uv/uv.toml"), "uv configuration file not found"