[test] Add jupyter notebook to tests

requirements_test.txt

@@ -11,3 +11,4 @@ matplotlib
 cffi
 scipy
 setproctitle
+nbmake

tests/python/test_ipython.ipynb

@@ -0,0 +1,68 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "51b3b00e",
+   "metadata": {},
+   "source": [
+    "# Count primes below a given bound"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "83062572",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import taichi as ti\n",
+    "\n",
+    "def test_kernel_print():\n",
+    "    N = 10000\n",
+    "    ti.init()\n",
+    "    @ti.func\n",
+    "    def is_prime(n: int):\n",
+    "        result = True\n",
+    "        for k in range(2, int(n**0.5) + 1):\n",
+    "            if n % k == 0:\n",
+    "                result = False\n",
+    "                break\n",
+    "        return result\n",
+    "\n",
+    "    @ti.kernel\n",
+    "    def count_primes(n: int) -> int:\n",
+    "        count = 0\n",
+    "        for k in range(2, n):\n",
+    "            if is_prime(k):\n",
+    "                count += 1\n",
+    "\n",
+    "        return count\n",
+    "\n",
+    "    count_primes(N)\n",
+    "    \n",
+    "test_kernel_print()"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

tests/run_tests.py

@@ -153,7 +153,7 @@ def _test_python(args):
             # auto-complete file names
             if not f.startswith('test_'):
                 f = 'test_' + f
-            if not f.endswith('.py'):
+            if not (f.endswith('.py') or f.endswith('.ipynb')):
                 f = f + '.py'
             file = os.path.join(test_dir, f)
             has_tests = False
@@ -164,6 +164,7 @@ def _test_python(args):
     else:
         # run all the tests
         pytest_args = [test_dir]
+    pytest_args += ['--nbmake']
     if args.verbose:
         pytest_args += ['-v']
     if args.rerun: