Add a command line tool to use num2words, credits to @hernamesbarbara

tests/test_cli.py

@@ -0,0 +1,96 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from __future__ import unicode_literals
+
+import os
+import unittest
+
+import delegator
+import num2words
+
+
+class CliCaller(object):
+
+    def __init__(self):
+        self.cmd = os.path.realpath(os.path.join(os.path.dirname(__file__),
+                                    "..", "bin", "num2words"))
+        self.cmd_list = ["python", self.cmd]
+
+    def run_cmd(self, *args):
+        cmd_list = self.cmd_list + [str(arg) for arg in args]
+        cmd = " ".join(cmd_list)
+        return delegator.run(cmd)
+
+
+class CliTestCase(unittest.TestCase):
+    """Test the command line app"""
+
+    def setUp(self):
+        self.cli = CliCaller()
+
+    def test_cli_help(self):
+        """num2words without arguments should exit with status 1
+        and show docopt's default short usage message
+        """
+        output = self.cli.run_cmd()
+        self.assertEqual(output.return_code, 1)
+        self.assertTrue(output.err.startswith('Usage:'))
+
+    def test_cli_list_langs(self):
+        """You should be able to list all availabe languages
+        """
+        output = self.cli.run_cmd('--list-languages')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTER_CLASSES.keys())),
+            output.out.strip().split(os.linesep)
+        )
+        output = self.cli.run_cmd('-L')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTER_CLASSES.keys())),
+            output.out.strip().split(os.linesep)
+        )
+
+    def test_cli_list_converters(self):
+        """You should be able to list all available converters
+        """
+        output = self.cli.run_cmd('--list-converters')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTES_TYPES)),
+            output.out.strip().split(os.linesep)
+        )
+        output = self.cli.run_cmd('-C')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTES_TYPES)),
+            output.out.strip().split(os.linesep)
+        )
+
+    def test_cli_default_lang(self):
+        """Default to english
+        """
+        output = self.cli.run_cmd(150)
+        self.assertEqual(output.return_code, 0)
+        self.assertEqual(
+            output.out.strip(),
+            "one hundred and fifty point zero"
+        )
+
+    def test_cli_with_lang(self):
+        """You should be able to specify a language
+        """
+        output = self.cli.run_cmd(150, '--lang', 'es')
+        self.assertEqual(output.return_code, 0)
+        self.assertEqual(
+            output.out.strip(),
+            "ciento cincuenta punto cero"
+        )
+
+    def test_cli_with_lang_to(self):
+        """You should be able to specify a language
+        """
+        output = self.cli.run_cmd(150.55, '--lang', 'es', '--to', 'currency')
+        self.assertEqual(output.return_code, 0)
+        self.assertEqual(
+            output.out.strip(),
+            "ciento cincuenta euros con cincuenta y cinco centimos"
+        )