Add test for supported wheels

tests/test_supported_wheels.sh

@@ -5,8 +5,9 @@ if [ -z "$PIP_CMD" ]; then
 else
     pip_install="$PIP_CMD install"
 fi
-# Current wheel versions not available for older Pythons
+# Current wheel versions not available for older Pythons.
 lpv=$(lex_ver $MB_PYTHON_VERSION)
+# Check no errors.
 if [ $lpv -ge $(lex_ver 3.5) ] || [ $lpv -lt $(lex_ver 3) ]; then
     for whl in wheel==0.31.1 wheel==0.32.0 wheel; do
         $pip_install -U $whl
@@ -22,3 +23,20 @@ if [ $lpv -ge $(lex_ver 3.5) ] || [ $lpv -lt $(lex_ver 3) ]; then
         texext-0.6.1-cp36-none-any.whl
     done
 fi
+
+# Test that wheels for versions other than our own, not supported.
+if [ $(uname) == 'Darwin' ]; then
+    our_ver=$(python --version | awk '{print $2}' | awk -F '.' '{print $1$2}')
+    other_ver=$([ "$our_ver" == "37" ] && echo "38" || echo "37")
+    good_whl="tornado-5.1-cp${our_ver}-cp${our_ver}m-macosx_10_9_x86_64.whl"
+    bad_whl="tornado-5.1-cp${other_ver}-cp${other_ver}m-macosx_10_9_x86_64.whl"
+    if [ "$($PYTHON_EXE supported_wheels.py $bad_wheel)" != "" ]; then
+        echo "$bad_wheel not supported, but supported wheels says it is."
+        RET=1
+    fi
+    if [ "$($PYTHON_EXE supported_wheels.py $good_wheel)" != "$good_wheel" ]; then
+        echo "$good_wheel supported, but supported wheels says it is not."
+        RET=1
+    fi
+fi
+