implement a test prototype for the LAMMPS shell

unittest/tools/test_lammps_shell.py

@@ -0,0 +1,49 @@
+
+import os, re, subprocess, unittest
+
+# enable test mode
+os.putenv('LAMMPS_SHELL_TESTING','1')
+
+shell_prompt_re = r"(.*LAMMPS Shell> ([a-z0-9_]+) *([a-z0-9_\.]+)?.*)+"
+
+#
+class LammpsShell(unittest.TestCase):
+
+    def setUp(self):
+        self.proc = subprocess.Popen('./lammps-shell',
+                                     stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+
+
+    def tearDown(self):
+        self.proc.kill()
+
+
+    def InputRunner(self,text):
+        """Test tab expansions"""
+        try:
+            [outs,errs] = self.proc.communicate(input=text, timeout=1)
+        except TimeoutExpired:
+            proc.kill()
+            [outs,errs] = proc.communicate()
+
+        #print(outs.decode())
+        return re.findall(shell_prompt_re, outs.decode('UTF-8'), re.MULTILINE)[0]
+
+    def testExpandClear(self):
+        """Test expansion of a shell specific command"""
+        self.assertEqual(self.InputRunner(b'cle\t\n')[1],"clear")
+
+    def testExpandSource(self):
+        """Test expansion of a shell command and a file name"""
+        with open('.tmp.in.source', 'w') as out:
+           print('units real', file=out)
+        out.close()
+        matches=self.InputRunner(b'sour\t.tmp.in.sou\t\n')
+        os.remove('.tmp.in.source')
+        self.assertEqual(matches[1],"source")
+        self.assertEqual(matches[2],".tmp.in.source")
+
+
+###########################
+if __name__ == "__main__":
+    unittest.main()