Update README.md

Author: bact

tests/README.md

@@ -4,6 +4,7 @@ Tests are categorized into three groups: core, compact, and extra.
 
 ## Core Tests (test_*.py)
 
+- Run `unittest tests.core`
 - Focus on core functionalities.
 - Do not rely on external dependencies beyond the standard library,
   except for `requests` which is used for corpus downloading.
@@ -12,6 +13,7 @@ Tests are categorized into three groups: core, compact, and extra.
 
 ## Compact Tests (testc_*.py)
 
+- Run `unittest tests.compact`
 - Test a limited set of additional functionalities that rely on optional
   dependencies specified in `requirements.txt`.
 - These dependencies are `PyYAML`, `numpy`, `pyicu`, `python-crfsuite`, and
@@ -20,13 +22,15 @@ Tests are categorized into three groups: core, compact, and extra.
 
 ## Extra Tests (testx_*.py)
 
+- Run `unittest tests.extra`
 - Explore functionalities that rely on optional dependencies specified in the
   `extras` section of `setup.py`.
-- These dependencies might include libraries like `gensim`, `nltk`, or `torch`.
+- These dependencies might include libraries like `gensim`, `tltk`, or `torch`.
 - Due to dependency complexities, these functionalities are not part of the
   automated test suite and will not be tested in the CI/CD pipeline.
 
 ## Default Test Suite
 
-The default test suite, executed by the `unittest tests` command, is defined
-within `__init__.py` in this directory.
+The default test suite, triggered by the `unittest tests` command, encompasses
+all test cases within the `tests.core` and `tests.compact` packages.
+This suite is defined within the `__init__.py` file in this directory.