dos2unix: add tests for all executables

Closes #28283.

Signed-off-by: Brett Koonce <koonce@gmail.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/Library/Formula/dos2unix.rb b/Library/Formula/dos2unix.rb
index 68a8862d8..70c7844c3 100644
--- a/Library/Formula/dos2unix.rb
+++ b/Library/Formula/dos2unix.rb
@@ -24,9 +24,23 @@ class Dos2unix < Formula
   end
 
   test do
+    # write a file with lf
     path = testpath/"test.txt"
-    path.write "foo\r\nbar\r\n"
+    path.write "foo\nbar\n"
 
+    # unix2mac: convert lf to cr
+    system "#{bin}/unix2mac", path
+    assert_equal "foo\rbar\r", path.read
+
+    # mac2unix: convert cr to lf
+    system "#{bin}/mac2unix", path
+    assert_equal "foo\nbar\n", path.read
+
+    # unix2dos: convert lf to cr+lf
+    system "#{bin}/unix2dos", path
+    assert_equal "foo\r\nbar\r\n", path.read
+
+    # dos2unix: convert cr+lf to lf
     system "#{bin}/dos2unix", path
     assert_equal "foo\nbar\n", path.read
   end