Add specs for Plugin::UnloadedSource equality

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: hsbt

bundler/spec/bundler/plugin/unloaded_source_spec.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+RSpec.describe Bundler::Plugin::UnloadedSource do
+  let(:uri) { "uri://to/test" }
+
+  def source(type)
+    described_class.new("uri" => uri, "type" => type)
+  end
+
+  describe "equality" do
+    it "treats sources with the same uri and type as equal" do
+      a = source("type_a")
+      b = source("type_a")
+
+      expect(a).to eq(b)
+      expect(a).to eql(b)
+      expect(a.hash).to eq(b.hash)
+    end
+
+    it "treats sources with the same uri but different types as not equal" do
+      a = source("type_a")
+      b = source("type_b")
+
+      expect(a).not_to eq(b)
+      expect(a).not_to eql(b)
+      expect(a.hash).not_to eq(b.hash)
+    end
+
+    it "is not equal to a real plugin source with the same uri and type" do
+      klass = Class.new
+      klass.send :include, Bundler::Plugin::API::Source
+
+      expect(source("type_a")).not_to eq(klass.new("uri" => uri, "type" => "type_a"))
+    end
+  end
+end