From beee84dfb1a89298966bab6f89dbe9feb57c43ab Mon Sep 17 00:00:00 2001
From: Lachlan Jones <13636221+LachJones@users.noreply.github.com>
Date: Mon, 28 Oct 2024 10:41:05 +1100
Subject: [PATCH] Add type checking to standard tests

---
 .github/workflows/ci.yml | 4 ++++
 CONTRIBUTING.md          | 3 ++-
 requirements-dev.txt     | 3 ++-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 97efa07..d9f84f9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,6 +25,10 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install .
+    - name: Type Checking
+      run: |
+        python -m pip install mypy
+        python -m mypy iso639
     - name: Test
       run: |
         pip install pytest 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 86a9dbe..fe91e92 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -64,9 +64,10 @@ Pushing changes to your forked repository should trigger a [workflow](https://gi
 flake8
 black --check .
 isort --check-only .
+mypy iso639
 ```
 
-`iso639-lang` uses `flake8` for linting, `black` for formatting and `isort` for sorting imports. The configuration of these tools is available in the `.flake8` and `pyproject.toml` files.
+`iso639-lang` uses `flake8` for linting, `black` for formatting, `isort` for sorting imports and `mypy` for type checking. The configuration of these tools is available in the `.flake8` and `pyproject.toml` files.
 
 
 ## Submitting Changes
diff --git a/requirements-dev.txt b/requirements-dev.txt
index f338895..99c1039 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,4 +5,5 @@ isort>=5.13.2
 lxml>=5.3.0
 pandas>=2.0.3
 requests>=2.32.3
-pytest>=8.3.2
\ No newline at end of file
+pytest>=8.3.2
+mypy>=1.13.0
\ No newline at end of file