// Copyright 2020 The Pigweed Authors
//
// 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
//
//     https://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.

syntax = "proto3";

package pw.unit_test;

message TestCaseDescriptor {
  // Name of the test suite to which this test case belongs.
  string suite_name = 1;

  // Name of the test case.
  string test_name = 2;

  // Path to the file in which the test case is defined.
  string file_name = 3;
}

message TestCaseExpectation {
  // The source code for the expression which was run.
  string expression = 1;

  // The expression with arguments evaluated.
  string evaluated_expression = 2;

  // Line number at which the expectation is located.
  uint32 line_number = 3;

  // Whether the expectation succeeded.
  bool success = 4;
}

enum TestCaseResult {
  SUCCESS = 0;
  FAILURE = 1;
  SKIPPED = 2;
}

message TestRunStart {}

message TestRunEnd {
  uint32 passed = 1;
  uint32 failed = 2;
  uint32 skipped = 3;
  uint32 disabled = 4;
}

message Event {
  oneof type {
    // Unit test run has started.
    TestRunStart test_run_start = 1;

    // Unit test run has ended.
    TestRunEnd test_run_end = 2;

    // Start of a test case.
    TestCaseDescriptor test_case_start = 3;

    // End of a test case.
    TestCaseResult test_case_end = 4;

    // Encountered a disabled test case.
    TestCaseDescriptor test_case_disabled = 5;

    // Expectation statement within a test case.
    TestCaseExpectation test_case_expectation = 6;
  }
};

message TestRunRequest {
  // Whether to send expectation events for successful checks.
  bool report_passed_expectations = 1;

  // Optional list of test suites to run.
  repeated string test_suite = 2;
}

service UnitTest {
  // Runs registered unit tests, streaming back test events as they occur.
  rpc Run(TestRunRequest) returns (stream Event) {}
}