Add tests for sync_default_gems.rb

1 files changed, 55 insertions, 0 deletions

diff --git a/tool/test/test_sync_default_gems.rb b/tool/test/test_sync_default_gems.rb
new file mode 100755
index 0000000000..7e6a6d830e
--- /dev/null
+++ b/tool/test/test_sync_default_gems.rb
@@ -0,0 +1,55 @@
+#!/usr/bin/ruby
+require 'test/unit'
+require 'stringio'
+require_relative '../sync_default_gems'
+
+module Test_SyncDefaultGems
+  class TestMessageFilter < Test::Unit::TestCase
+    def assert_message_filter(expected, trailers, input, repo = "ruby/test", sha = "0123456789")
+      subject, *expected = expected
+      expected = [
+        "[#{repo}] #{subject}\n",
+        *expected.map {_1+"\n"},
+        "\n",
+        "https://github.com/#{repo}/commit/#{sha[0, 10]}\n",
+      ]
+      if trailers
+        expected << "\n"
+        expected.concat(trailers.map {_1+"\n"})
+      end
+
+      out, err = capture_output do
+        SyncDefaultGems.message_filter(repo, sha, input: StringIO.new(input, "r"))
+      end
+
+      all_assertions do |a|
+        a.for("error") {assert_empty err}
+        a.for("result") {assert_pattern_list(expected, out)}
+      end
+    end
+
+    def test_subject_only
+      expected = [
+        "initial commit",
+      ]
+      assert_message_filter(expected, nil, "initial commit")
+    end
+
+    def test_link_in_parenthesis
+      expected = [
+        "fix (https://github.com/ruby/test/pull/1)",
+      ]
+      assert_message_filter(expected, nil, "fix (#1)")
+    end
+
+    def test_co_authored_by
+      expected = [
+        "commit something",
+      ]
+      trailers = [
+        "Co-Authored-By: git <git@ruby-lang.org>",
+      ]
+      assert_message_filter(expected, trailers, [expected, "", trailers, ""].join("\n"))
+    end
+  end
+end