add tests

[phoenixdong]

Add tests module.

The configuration file of the tests is ‘tests/conf/config.yaml’.

The instruction used to run the tests is ‘python tests/test.py --config-path conf --config-name config’

The instruction used to stop the tests is ‘python tests/test.py --config-path conf --config-name config action=stop’

Testing includes:

• Megatron unit tests.
• FlagScale unit tests.
• FlagScale functional tests.

Major updates:

• Results of unit tests are output directly to the console instead of a file.
• For functional tests, the running status is output to the console.
• For functional tests results, use essentially equal judgment rather than strict judgment.
• Generated files for functional tests will not be saved.

TODO:

• Make run.py not automatically generate output paths.