Merge pull request #15 from coderefinery/rkdarst/end-to-end-tests

Add end-to-end tests

tests/end-to-end-python.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+
+# This should be run from the main word-count directory, *not* the `tests/`
+# directory.
+
+import subprocess
+import sys
+
+# Run count.py using whatever Python we are using right now.  Get the output as
+# a string.
+output = subprocess.check_output([sys.executable, 'statistics/count.py', 'data/abyss.txt']).decode()
+
+# Split the string and confirm the expected lines are in there.
+output = output.split('\n')
+assert 'the 4044' in output
+assert 'and 2807' in output
+print("Success")

tests/end-to-end-shell.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# This should be run from the main word-count directory, *not* the `tests/`
+# directory.
+
+# This is an end-to-end test of count.py.  It runs the script and
+# tests that a few lines are correct.
+
+# Check that `the` appears 4044 times.  The 'grep' command returns
+# true if somethin is found that matches.
+if python3 statistics/count.py data/abyss.txt | grep "the 4044" ; then
+    echo "Success: 'the' found correct number of times"
+else
+    echo "Fail: 'the' not correct"
+    exit 1
+fi
+
+
+# Check that `and` appears 2807 times
+if python3 statistics/count.py data/abyss.txt | grep "and 2807" ; then
+    echo "Success: 'and' found correct number of times"
+else
+    echo "Fail: 'and' not correct"
+    exit 1
+fi
+
+echo "Success"