Add some tests for formatting time for display!

cursewords/cursewords.py

@@ -627,12 +627,11 @@ def show_time(self):
         x_coord = self.grid.grid_x + self.grid.column_count * 4 - 7
 
         print(self.grid.term.move(y_coord, x_coord)
-                + self.display_format())
+                + self.format_time(self.time_passed))
 
-    def display_format(self):
-        time_amount = self.time_passed
-
-        m, s = divmod(time_amount, 60)
+    @classmethod
+    def format_time(cl, time_passed):
+        m, s = divmod(time_passed, 60)
         h, m = divmod(m, 60)
 
         ch = '{h:02d}:'.format(h=h) if h else '   '

requirements.dev.txt

@@ -0,0 +1 @@
+pytest==4.3.0

setup.py

@@ -6,6 +6,9 @@
 with open(path.join(here, 'requirements.txt')) as f:
     reqs = f.read().split()
 
+with open(path.join(here, 'requirements.dev.txt')) as f:
+    test_reqs = f.read().split()
+
 with open(path.join(here, 'README.md')) as f:
     readme = f.read()
 
@@ -30,6 +33,7 @@
     packages=find_packages(),
     python_requires='>=3.4',
     install_requires=reqs,
+    tests_require=test_reqs,
     package_data={
         'cursewords': ['version']
     },

test/cursewords_test.py

@@ -0,0 +1,13 @@
+import cursewords
+
+def test_format_time():
+    test_cases = [
+        (1,    "   00:01"),
+        (61,   "   01:01"),
+        (314,  "   05:14"),
+        (1288, "   21:28"),
+        (1288, "   21:28"),
+        (3723, "01:02:03"),
+    ]
+    for (seconds, expect) in test_cases:
+        assert cursewords.Timer.format_time(seconds) == expect