chore: checkpoint before Python removal

vendor/schemars/tests/schema_settings.rs

@@ -0,0 +1,46 @@
+mod util;
+use schemars::r#gen::SchemaSettings;
+use schemars::JsonSchema;
+use serde_json::Value;
+use std::collections::BTreeMap;
+use util::*;
+
+#[derive(JsonSchema)]
+pub struct Outer {
+    #[schemars(example = "eight", example = "null")]
+    pub int: i32,
+    pub values: BTreeMap<&'static str, Value>,
+    pub value: Value,
+    pub inner: Option<Inner>,
+}
+
+#[derive(JsonSchema)]
+pub enum Inner {
+    UndocumentedUnit1,
+    UndocumentedUnit2,
+    /// This is a documented unit variant
+    DocumentedUnit,
+    ValueNewType(Value),
+}
+
+fn eight() -> i32 {
+    8
+}
+
+fn null() {}
+
+#[test]
+fn schema_matches_draft07() -> TestResult {
+    test_generated_schema::<Outer>("schema_settings", SchemaSettings::draft07())
+}
+
+#[test]
+fn schema_matches_2019_09() -> TestResult {
+    test_generated_schema::<Outer>("schema_settings-2019_09", SchemaSettings::draft2019_09())
+}
+
+#[test]
+#[ignore = "Fails due to default/empty `Metadata` not being considered equal to `Option::None`, although they're conceptually the same and serialize to identical JSON"]
+fn schema_matches_openapi3() -> TestResult {
+    test_generated_schema::<Outer>("schema_settings-openapi3", SchemaSettings::openapi3())
+}