testing/rust_gtest_interop/rust_gtest_interop_unittest.rs

// Copyright 2022 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

use rust_gtest_interop::prelude::*;

#[gtest(Test, InTopModule)]
fn test() {
    expect_true!(true);
}

mod module1 {
    use super::*;

    #[gtest(Test, InChildModule)]
    fn test() {
        expect_true!(true);
    }

    mod module2 {
        use super::*;

        #[gtest(Test, InGrandChildModule)]
        fn test() {
            expect_true!(true);
        }
    }
}

#[allow(dead_code)]
fn bar() {
    #[gtest(Test, InFunctionBody)]
    fn test() {
        expect_true!(true);
    }
}

mod module3 {
    use super::*;

    #[allow(dead_code)]
    fn bar() {
        #[gtest(Test, InFunctionBodyInChildModule)]
        fn test() {
            expect_true!(true);
        }
    }
}

#[gtest(ExactSuite, ExactTest)]
fn test() {}

#[gtest(Test, WithResultType)]
fn test() -> std::io::Result<()> {
    expect_true!(true);
    Ok(())
}

#[gtest(Test, WithBoxResultType)]
fn test() -> std::result::Result<(), Box<dyn std::error::Error>> {
    expect_true!(true);
    Ok(())
}

// This test fails due to returning Err, and displays the message "uhoh."
#[gtest(Test, DISABLED_WithError)]
fn test() -> std::result::Result<(), Box<dyn std::error::Error>> {
    expect_true!(true);
    Err("uhoh".into())
}

// TODO(danakj): It would be nice to test expect macros, but we would need to hook up
// EXPECT_NONFATAL_FAILURE to do so. There's no way to fail a test in a way that we accept, the bots
// see the failure even if the process returns 0.
// #[gtest(ExpectFailTest, Failures)]
// fn test() {
//     expect_eq!(1 + 1, 1 + 2);
//     expect_ne!(2 + 3, 3 + 2);
//     expect_lt!(1 + 1, 1 + 0);
//     expect_gt!(1 + 0, 1 + 1);
//     expect_le!(1 + 1, 1 + 0);
//     expect_ge!(1 + 0, 1 + 1);
//     expect_true!(true && false);
//     expect_false!(true || false);
//     unsafe { COUNTER += 1 };
// }

extern "C" {
    fn num_subclass_created() -> usize; // In test/test_factory.h.
}

#[gtest(Test, WithTestSubclassAsTestSuite)]
#[gtest_suite(test_subclass_factory)]
fn test() {
    // TODO(danakj): Make the factory accessible to the test body.
    expect_eq!(1, unsafe { num_subclass_created() });
}