1 files changed, 81 insertions, 0 deletions
diff --git a/lib/portage/tests/dep/test_libc.py b/lib/portage/tests/dep/test_libc.py
new file mode 100644
index 000000000..6ea96d720
--- /dev/null
+++ b/lib/portage/tests/dep/test_libc.py
@@ -0,0 +1,81 @@
+# Copyright 2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+from portage.dep import Atom
+from portage.dep.libc import strip_libc_deps
+from portage.tests import TestCase
+
+
+class LibcUtilStripDeps(TestCase):
+    def testStripSimpleDeps(self):
+        """
+        Test that we strip a basic libc dependency out and return
+        a list of dependencies without it in there.
+        """
+
+        libc_dep = [Atom("=sys-libs/glibc-2.38")]
+
+        original_deps = (
+            [
+                Atom("=sys-libs/glibc-2.38"),
+                Atom("=app-misc/foo-1.2.3"),
+            ],
+            [
+                Atom("=sys-libs/glibc-2.38"),
+            ],
+            [
+                Atom("=app-misc/foo-1.2.3"),
+                Atom("=app-misc/bar-1.2.3"),
+            ],
+        )
+
+        for deplist in original_deps:
+            strip_libc_deps(deplist, libc_dep)
+
+            self.assertFalse(
+                all(libc in deplist for libc in libc_dep),
+                "Stripped deplist contains a libc candidate",
+            )
+
+    def testStripComplexRealizedDeps(self):
+        """
+        Test that we strip pathological libc dependencies out and return
+        a list of dependencies without it in there.
+        """
+
+        # This shouldn't really happen for a 'realized' dependency, but
+        # we shouldn't crash if it happens anyway.
+        libc_dep = [Atom("=sys-libs/glibc-2.38*[p]")]
+
+        original_deps = (
+            [
+                Atom("=sys-libs/glibc-2.38[x]"),
+                Atom("=app-misc/foo-1.2.3"),
+            ],
+            [
+                Atom("=sys-libs/glibc-2.38[p]"),
+            ],
+            [
+                Atom("=app-misc/foo-1.2.3"),
+                Atom("=app-misc/bar-1.2.3"),
+            ],
+        )
+
+        for deplist in original_deps:
+            strip_libc_deps(deplist, libc_dep)
+
+            self.assertFalse(
+                all(libc in deplist for libc in libc_dep),
+                "Stripped deplist contains a libc candidate",
+            )
+
+    def testStripNonRealizedDeps(self):
+        """
+        Check that we strip non-realized libc deps.
+        """
+
+        libc_dep = [Atom("sys-libs/glibc:2.2=")]
+        original_deps = [Atom(">=sys-libs/glibc-2.38-r7")]
+
+        strip_libc_deps(original_deps, libc_dep)
+        self.assertFalse(original_deps, "(g)libc dep was not stripped")