chore: checkpoint before Python removal

vendor/schemars/tests/crate_alias.rs

@@ -0,0 +1,20 @@
+mod util;
+use ::schemars as not_schemars;
+use util::*;
+
+#[allow(unused_imports)]
+use std as schemars;
+
+#[allow(dead_code)]
+#[derive(not_schemars::JsonSchema)]
+#[schemars(crate = "not_schemars")]
+struct Struct {
+    /// This is a document
+    foo: i32,
+    bar: bool,
+}
+
+#[test]
+fn test_crate_alias() -> TestResult {
+    test_default_generated_schema::<Struct>("crate_alias")
+}