This crate is meant to be used as a dev dependency. Its purpose is to provides the testing support
to help reduce boilerplate, duplication, and provides standardization.

The following macros are provided:
- [op_tests_mod](https://docs.rs/oysterpack_testing/macro.op_tests_mod.html)
  - provides support to configure logging for tests
  - logs test execution time
- [op_test](https://docs.rs/oysterpack_testing/macro.op_test.html)
  - used to generate test functions that leverage the `tests` module generated by [op_tests_mod!()](macro.op_tests_mod.html)

## Example
```rust

#[cfg(test)]
#[macro_use]
extern crate oysterpack_testing;

#[cfg(test)]
op_tests_mod!();

#[cfg(test)]
mod foo_test {
   // the macro creates a test function named 'foo'
   op_test!(foo, {
      info!("SUCCESS");
   });

   #[test]
   fn foo_test() {
      // alternatively use ::run_test("test name",|| { // test code })
      ::run_test("foo_test", || {
        // by default the crate's log level is set to Debug
        debug!("SUCCESS")
      });
   }
}
```

## Example - configuring target log levels
```rust

#[cfg(test)]
#[macro_use]
extern crate oysterpack_testing;

#[cfg(test)]
op_tests_mod! {
    "foo" => Info,
    "bar" => Error
}

#[cfg(test)]
mod foo_test {
   op_test!(foo, {
      info!("this will be logged because this crate's log level is Debug");
      info!(target: "foo", "foo info will be logged");
      info!(target: "bar", "*** bar info will not be logged ***");
      error!(target: "bar", "bar error will be logged");
   });

   #[test]
   fn foo_test() {
      ::run_test("foo_test", || {
        debug!("SUCCESS")
      });
   }
}

```

## Notes
- the log, fern, and chrono crates are re-exported because they are used by the macros. Re-exporting
  them makes the macros self-contained.