diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
new file mode 100644
index 0000000..0d15840
--- /dev/null
+++ b/.github/workflows/coverage.yml
@@ -0,0 +1,33 @@
+name: coverage
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  report:
+    runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        python-version: ["3.10"]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install packages
+        run: |
+          python -m pip install --upgrade pip wheel setuptools
+          python -m pip install ".[test]"
+          pip list
+
+      - name: Measure test coverage
+        run: |
+          python -m pytest --cov=lazy_loader --durations=10
+          # Tests fail if using `--doctest-modules`. I.e.,
+          # python -m pytest --cov=lazy_loader --doctest-modules --durations=20
+          codecov
diff --git a/lazy_loader/tests/__init__.py b/lazy_loader/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/fake_pkg/__init__.py b/lazy_loader/tests/fake_pkg/__init__.py
similarity index 100%
rename from tests/fake_pkg/__init__.py
rename to lazy_loader/tests/fake_pkg/__init__.py
diff --git a/tests/fake_pkg/__init__.pyi b/lazy_loader/tests/fake_pkg/__init__.pyi
similarity index 100%
rename from tests/fake_pkg/__init__.pyi
rename to lazy_loader/tests/fake_pkg/__init__.pyi
diff --git a/tests/fake_pkg/some_func.py b/lazy_loader/tests/fake_pkg/some_func.py
similarity index 100%
rename from tests/fake_pkg/some_func.py
rename to lazy_loader/tests/fake_pkg/some_func.py
diff --git a/tests/test_lazy_loader.py b/lazy_loader/tests/test_lazy_loader.py
similarity index 96%
rename from tests/test_lazy_loader.py
rename to lazy_loader/tests/test_lazy_loader.py
index b836078..800502a 100644
--- a/tests/test_lazy_loader.py
+++ b/lazy_loader/tests/test_lazy_loader.py
@@ -97,7 +97,7 @@ def test_lazy_attach():
 
 
 def test_attach_same_module_and_attr_name():
-    import fake_pkg
+    from lazy_loader.tests import fake_pkg
 
     # Grab attribute twice, to ensure that importing it does not
     # override function by module
@@ -105,7 +105,7 @@ def test_attach_same_module_and_attr_name():
     assert isinstance(fake_pkg.some_func, types.FunctionType)
 
     # Ensure imports from submodule still work
-    from fake_pkg.some_func import some_func
+    from lazy_loader.tests.fake_pkg.some_func import some_func
 
     assert isinstance(some_func, types.FunctionType)
 
@@ -126,7 +126,7 @@ def test_stub_loading(tmp_path):
 
 
 def test_stub_loading_parity():
-    import fake_pkg
+    from lazy_loader.tests import fake_pkg
 
     from_stub = lazy.attach_stub(fake_pkg.__name__, fake_pkg.__file__)
     stub_getter, stub_dir, stub_all = from_stub
diff --git a/pyproject.toml b/pyproject.toml
index fcd0397..c64d578 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ dynamic = ["description"]
 
 
 [project.optional-dependencies]
-test = ["pytest >= 7"]
+test = ["pytest >= 7.1", "pytest-cov >= 3.0", "codecov >= 2.1"]
 lint = ["pre-commit >= 2.20"]
 
 [project.urls]