Update tests to improve coverage

Author: jarrodmillman

.github/workflows/coverage.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   report:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ["3.10"]
@@ -23,6 +23,8 @@ jobs:
         run: |
           python -m pip install --upgrade pip wheel setuptools
           python -m pip install ".[test]"
+          python -m pip install --upgrade numpy scipy
+          python -m pip uninstall --yes pandas
           pip list
 
       - name: Measure test coverage

lazy_loader/tests/test_lazy_loader.py

@@ -49,22 +49,29 @@ def test_lazy_import_impact_on_sys_modules():
 
 
 def test_lazy_import_nonbuiltins():
-    sp = lazy.load("scipy")
     np = lazy.load("numpy")
-    if isinstance(sp, lazy.DelayedImportErrorModule):
+    sp = lazy.load("scipy")
+    pd = lazy.load("pandas")
+    if isinstance(np, lazy.DelayedImportErrorModule):
         try:
-            sp.pi
+            np.sin(np.pi)
             assert False
         except ModuleNotFoundError:
             pass
-    elif isinstance(np, lazy.DelayedImportErrorModule):
+    elif isinstance(sp, lazy.DelayedImportErrorModule):
         try:
-            np.sin(np.pi)
+            sp.pi
             assert False
         except ModuleNotFoundError:
             pass
     else:
         assert np.sin(sp.pi) == pytest.approx(0, 1e-6)
+    if isinstance(pd, lazy.DelayedImportErrorModule):
+        try:
+            pd.DataFrame()
+            assert False
+        except ModuleNotFoundError:
+            pass
 
 
 def test_lazy_attach():