algol68g: improve test by running a short program

Closes #26442.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/Library/Formula/algol68g.rb b/Library/Formula/algol68g.rb
index 191b7f44b..7706fb785 100644
--- a/Library/Formula/algol68g.rb
+++ b/Library/Formula/algol68g.rb
@@ -12,7 +12,14 @@ class Algol68g < Formula
     system "make install"
   end
 
-  def test
-    system "#{bin}/a68g", "--help"
+  test do
+    path = testpath/"hello.alg"
+    path.write <<-EOS.undent
+      print("Hello World")
+    EOS
+
+    output = `#{bin}/a68g #{path}`.strip
+    assert_equal "Hello World", output
+    assert_equal 0, $?.exitstatus
   end
 end