Add format matchers spec

There are already format for email, url, and link_url, but the spec was missing.

Author: kulturbande

spec/libraries/alchemy/configurations/format_matchers_spec.rb

@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe Alchemy::Configurations::FormatMatchers do
+  subject(:format_matchers) { described_class.new }
+
+  describe "#email" do
+    it "matches valid emails" do
+      expect("user@example.com").to match(format_matchers.email)
+    end
+
+    it "does not match invalid emails" do
+      expect("not-an-email").not_to match(format_matchers.email)
+      expect("user@").not_to match(format_matchers.email)
+      expect("@example.com").not_to match(format_matchers.email)
+    end
+  end
+
+  describe "#url" do
+    it "matches valid URLs" do
+      expect("example.com").to match(format_matchers.url)
+      expect("sub.example.com").to match(format_matchers.url)
+      expect("example.com:8080").to match(format_matchers.url)
+      expect("example.com/path").to match(format_matchers.url)
+    end
+
+    it "does not match invalid URLs" do
+      expect("not a url").not_to match(format_matchers.url)
+    end
+  end
+
+  describe "#link_url" do
+    it "matches tel: links" do
+      expect("tel:+1234567890").to match(format_matchers.link_url)
+    end
+
+    it "matches mailto: links" do
+      expect("mailto:user@example.com").to match(format_matchers.link_url)
+    end
+
+    it "matches absolute paths" do
+      expect("/some/path").to match(format_matchers.link_url)
+    end
+
+    it "matches protocol URLs" do
+      expect("https://example.com").to match(format_matchers.link_url)
+      expect("http://example.com").to match(format_matchers.link_url)
+    end
+
+    it "does not match relative paths" do
+      expect("relative/path").not_to match(format_matchers.link_url)
+    end
+  end
+end