build(rust): vendor googletest crate

third_party/crates/googletest-0.14.3/tests/proptest_integration_test.rs

@@ -0,0 +1,30 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#![cfg(feature = "proptest")]
+
+use googletest::prelude::*;
+use proptest::test_runner::{Config, TestRunner};
+
+#[test]
+fn numbers_are_greater_than_zero() -> Result<()> {
+    let mut runner = TestRunner::new(Config::default());
+    runner.run(&(1..100i32), |v| Ok(verify_that!(v, gt(0))?)).or_fail()
+}
+
+#[test]
+fn strings_are_nonempty() -> Result<()> {
+    let mut runner = TestRunner::new(Config::default());
+    runner.run(&"[a-zA-Z0-9]+", |v| Ok(verify_that!(v, not(eq("")))?)).or_fail()
+}