1 files changed, 48 insertions, 0 deletions
diff --git a/spec/bundler/install/gemfile/lockfile_spec.rb b/spec/bundler/install/gemfile/lockfile_spec.rb
new file mode 100644
index 0000000000..dc1baca6ea
--- /dev/null
+++ b/spec/bundler/install/gemfile/lockfile_spec.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+RSpec.describe "bundle install with a lockfile present" do
+  let(:gf) { <<-G }
+    source "file://#{gem_repo1}"
+
+    gem "rack", "1.0.0"
+  G
+
+  subject do
+    install_gemfile(gf)
+  end
+
+  context "gemfile evaluation" do
+    let(:gf) { super() + "\n\n File.open('evals', 'a') {|f| f << %(1\n) } unless ENV['BUNDLER_SPEC_NO_APPEND']" }
+
+    context "with plugins disabled" do
+      before do
+        bundle! "config plugins false"
+        subject
+      end
+
+      it "does not evaluate the gemfile twice" do
+        bundle! :install
+
+        with_env_vars("BUNDLER_SPEC_NO_APPEND" => "1") { expect(the_bundle).to include_gem "rack 1.0.0" }
+
+        # The first eval is from the initial install, we're testing that the
+        # second install doesn't double-eval
+        expect(bundled_app("evals").read.lines.to_a.size).to eq(2)
+      end
+
+      context "when the gem is not installed" do
+        before { FileUtils.rm_rf ".bundle" }
+
+        it "does not evaluate the gemfile twice" do
+          bundle! :install
+
+          with_env_vars("BUNDLER_SPEC_NO_APPEND" => "1") { expect(the_bundle).to include_gem "rack 1.0.0" }
+
+          # The first eval is from the initial install, we're testing that the
+          # second install doesn't double-eval
+          expect(bundled_app("evals").read.lines.to_a.size).to eq(2)
+        end
+      end
+    end
+  end
+end