add iteration test cases

dev-requirements.txt

@@ -1 +1,2 @@
 flake8>=2.0.0
+testify

tests/autojump.py

@@ -0,0 +1 @@
+../bin/autojump

tests/autojump_data.py

@@ -0,0 +1 @@
+../bin/autojump_data.py

tests/autojump_utils.py

@@ -0,0 +1 @@
+../bin/autojump_utils.py

tests/autojump_utils_test.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+from testify import *
+
+from autojump_utils import decode
+from autojump_utils import first
+from autojump_utils import second
+from autojump_utils import last
+from autojump_utils import take
+
+
+class StringTestCase(TestCase):
+    def test_decode(self):
+        assert_equal(decode(r'blah'), u'blah')
+        assert_equal(decode(r'日本語'), u'日本語')
+
+
+class IterationTestCase(TestCase):
+    def test_first(self):
+        assert_equal(first((0, 1)), 0)
+        assert_equal(first(()), None)
+
+    def test_second(self):
+        assert_equal(second((0, 1)), 1)
+        assert_equal(second((0,)), None)
+
+    def test_last(self):
+        assert_equal(last((1, 2, 3)), 3)
+        assert_equal(last(()), None)
+
+    def test_take(self):
+        xs = [1, 2, 3]
+        assert_equal(list(take(1, xs)), [1])
+        assert_equal(list(take(2, xs)), [1, 2])
+        assert_equal(list(take(4, xs)), [1, 2, 3])
+        assert_equal(list(take(10, [])), [])
+
+
+class EnvironmentalVariableTestCase(TestCase):
+    pass
+
+
+if __name__ == "__main__":
+    run()