1 files changed, 45 insertions, 0 deletions
diff --git a/tests/line_diff.py b/tests/line_diff.py
new file mode 100755
index 000000000..1b42f1f2f
--- /dev/null
+++ b/tests/line_diff.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+"""
+line_diff.py - Simple tool that compares two files with the same number of lines and prints the
+characters (if any) on the right line (moving left to right) that are present that
+weren't present in the left line
+"""
+
+import sys
+
+left_file = sys.argv[1]
+right_file = sys.argv[2]
+
+left_lines = []
+right_lines = []
+
+with open(left_file) as left:
+    for line in left.readlines():
+        left_lines.append(line.strip())
+with open(right_file) as right:
+    for line in right.readlines():
+        right_lines.append(line.strip())
+
+if len(left_lines) != len(right_lines):
+    print("Files didn't have the same number of lines, exiting...")
+    sys.exit(0)
+
+for i in range(len(left_lines)):
+    left_contents = left_lines[i]
+    right_contents = right_lines[i]
+    if len(left_contents) > len(right_contents):
+        print("Line " + str(i) + " has longer left contents than right contents.")
+        print("Left contents: " + left_contents)
+        print("Right contents: " + right_contents)
+        break
+    else:
+        left_list = list(left_contents)
+        right_list = list(right_contents)
+        while len(left_list) > 0:
+            if right_list.pop(0) != left_list.pop(0):
+                print("Line " + str(i) + ": Right contents that are not a prefix of left contents.")
+                print("Left contents: " + left_contents)
+                print("Right contents: " + right_contents)
+                break
+        if len(right_list) > 0:
+            print("Line " + str(i) + ": Right contents have extra characters: " + ''.join(right_list))