Test suite improvements

.github/workflows/run-tests.yml

@@ -32,3 +32,29 @@ jobs:
       - name: Run nosetests
         run: |
           nosetests
+
+  test-deb10-i386:
+    runs-on: ubuntu-latest
+    container: i386/debian:10
+    steps:
+      - name: Install dependencies
+        run: |
+          apt-get update
+          apt-get install -y --no-install-recommends \
+                  python3-matplotlib \
+                  python3-numpy \
+                  python3-pandas \
+                  python3-requests \
+                  python3-scipy \
+                  python3-nose \
+                  git
+
+      # Note: "actions/checkout@v2" requires libstdc++6:amd64 to be
+      # installed in the container.  To keep things simple, use
+      # "actions/checkout@v1" instead.
+      # https://github.com/actions/checkout/issues/334
+      - uses: actions/checkout@v1
+
+      - name: Run nosetests
+        run: |
+          nosetests3

tests/__init__.py

@@ -0,0 +1,16 @@
+import numpy as np
+
+
+_np_error_state = {}
+
+
+def setup_module():
+    # Raise exceptions for arithmetic errors, except underflow
+    global _np_error_state
+    _np_error_state = np.seterr()
+    np.seterr('raise', under='ignore')
+
+
+def teardown_module():
+    # Restore original error handling state
+    np.seterr(**_np_error_state)