tests: run python-cffi tests

The entire python-cffi test suite is considered as a single test at
the level of the notmuch test suite. This might or might not be ideal,
but it gets them run.

configure

@@ -671,13 +671,38 @@ if [ $have_python -eq 0 ]; then
     errors=$((errors + 1))
 fi
 
-printf "Checking for python3 cffi... "
+have_python3=0
-if "$python" -c 'import sys,cffi; assert sys.version_info >= (3,0)' >/dev/null 2>&1; then
+if [ $have_python -eq 1 ]; then
+    printf "Checking for python3..."
+    if "$python" -c 'import sys; assert sys.version_info >= (3,0)' > /dev/null 2>&1; then
+        printf "Yes.\n"
+        have_python3=1
+    else
+        printf "No.\n"
+    fi
+fi
+
+have_python3_cffi=0
+have_python3_pytest=0
+if [ $have_python3 -eq 1 ]; then
+    printf "Checking for python3 cffi... "
+    if "$python" -c 'import cffi' >/dev/null 2>&1; then
         printf "Yes.\n"
         have_python3_cffi=1
-else
+    else
         printf "No.\n"
-    have_python3_cffi=0
+    fi
+
+    printf "Checking for python3 pytest (>= 3.0)... "
+    conf=$(mktemp)
+    printf "[pytest]\nminversion=3.0\n" > $conf
+    if pytest-3 -c $conf --version >/dev/null 2>&1; then
+        printf "Yes.\n"
+        have_python3_pytest=1
+    else
+        printf "No.\n"
+    fi
+    rm -f $conf
 fi
 
 printf "Checking for valgrind development files... "

test/T391-python-cffi.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+test_description="python bindings (pytest)"
+. $(dirname "$0")/test-lib.sh || exit 1
+
+if [ $NOTMUCH_HAVE_PYTHON3_CFFI -eq 0 -o $NOTMUCH_HAVE_PYTHON3_PYTEST -eq 0 ]; then
+    test_done
+fi
+
+
+test_begin_subtest "python cffi tests"
+pytest_dir=$NOTMUCH_SRCDIR/bindings/python-cffi/build/stage
+printf "[pytest]\nminversion = 3.0\naddopts = -ra\n" > $pytest_dir/pytest.ini
+test_expect_success "(cd $pytest_dir && ${NOTMUCH_PYTHON} -m pytest --log-file=$TMP_DIRECTORY/test.output)"
+test_done