spec/gemfiles_spec.rb in schema_dev-1.2.5 vs spec/gemfiles_spec.rb in schema_dev-1.3.0

@@ -3,11 +3,19 @@
 describe SchemaDev::Gemfiles do
 
   it "copies listed files" do
     config = get_config(ruby: %W[1.9.3 2.1.5], rails: %W[4.0 4.1], db: %W[sqlite3 postgresql])
     in_tmpdir do
-      SchemaDev::Gemfiles.build(config)
+      expect(SchemaDev::Gemfiles.build(config)).to be_truthy
       expect(relevant_diff(config, "gemfiles")).to be_empty
+    end
+  end
+
+  it "only copies files once" do
+    config = get_config(ruby: %W[1.9.3 2.1.5], rails: %W[4.0 4.1], db: %W[sqlite3 postgresql])
+    in_tmpdir do
+      expect(SchemaDev::Gemfiles.build(config)).to be_truthy
+      expect(SchemaDev::Gemfiles.build(config)).to be_falsey
     end
   end
 
   def relevant_diff(config, dir)
     src = SchemaDev::Gemfiles::TEMPLATES_ROOT + dir