t/: Add test to get a TODO since the fork point

In order to include the 'bin.pm' file, we need to add its containing
folder to the include path. Do this by adding a Makefile with the
required command line argument.

Add a new test that modifies the test file to add a new new TODO line.
Test that it comes back in the `git todo` output.

2 files changed, 52 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..e67850b
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,4 @@
+.PHONY: test
+
+test:
+	prove -v -I./t
diff --git a/t/100-shows-todo-comments-since-fork-point.t b/t/100-shows-todo-comments-since-fork-point.t
new file mode 100644
index 0000000..bb35c9d
--- /dev/null
+++ b/t/100-shows-todo-comments-since-fork-point.t
@@ -0,0 +1,48 @@
+#!/usr/bin/env perl -w
+
+use strict;
+
+use File::Copy;
+use Test::More;
+
+use Bin qw($BIN);
+
+my $file = 'git-sugdiff.rs';
+
+chdir 't-git-repo' or die $!;
+
+system('git checkout -b fork-point');
+ok !$?;
+
+open(my $input, '<', $file) or die $!;
+open(my $output, '>', "$file.out") or die $!;
+
+while (<$input>) {
+	if ($. == 34) {
+		print $output "    // TODO: 100-shows-todo-comments-since-fork-point\n";
+	}
+
+	print $output $_;
+}
+
+close $input;
+close $output;
+
+move("$file.out", $file) or die $!;
+
+system('git add git-sugdiff.rs');
+ok !$?;
+
+system('git commit -m "New TODO"');
+ok !$?;
+
+my $todos = qx($BIN);
+is $todos, 'TODO: 100-shows-todo-comments-since-fork-point
+';
+
+
+# Teardown
+system('git branch -d fork-point');
+
+
+done_testing;