1 files changed, 23 insertions, 0 deletions
diff --git a/library/std/src/sys/unix/os/tests.rs b/library/std/src/sys/unix/os/tests.rs
new file mode 100644
index 000000000..efc29955b
--- /dev/null
+++ b/library/std/src/sys/unix/os/tests.rs
@@ -0,0 +1,23 @@
+#[test]
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+fn test_glibc_version() {
+    // This mostly just tests that the weak linkage doesn't panic wildly...
+    super::glibc_version();
+}
+
+#[test]
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+fn test_parse_glibc_version() {
+    let cases = [
+        ("0.0", Some((0, 0))),
+        ("01.+2", Some((1, 2))),
+        ("3.4.5.six", Some((3, 4))),
+        ("1", None),
+        ("1.-2", None),
+        ("1.foo", None),
+        ("foo.1", None),
+    ];
+    for &(version_str, parsed) in cases.iter() {
+        assert_eq!(parsed, super::parse_glibc_version(version_str));
+    }
+}