add print error to stderr feature

1 files changed, 45 insertions, 0 deletions

diff --git a/spec/bundler/ui/shell_spec.rb b/spec/bundler/ui/shell_spec.rb
new file mode 100644
index 0000000000..e80e79939a
--- /dev/null
+++ b/spec/bundler/ui/shell_spec.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+require "spec_helper"
+
+RSpec.describe Bundler::UI::Shell do
+  subject { described_class.new }
+
+  before { subject.level = "debug" }
+
+  describe "#info" do
+    it "prints to stdout" do
+      expect { subject.info("info") }.to output("info\n").to_stdout
+    end
+  end
+
+  describe "#confirm" do
+    it "prints to stdout" do
+      expect { subject.confirm("confirm") }.to output("confirm\n").to_stdout
+    end
+  end
+
+  describe "#warn" do
+    it "prints to stdout" do
+      expect { subject.warn("warning") }.to output("warning\n").to_stdout
+    end
+  end
+
+  describe "#debug" do
+    it "prints to stdout" do
+      expect { subject.debug("debug") }.to output("debug\n").to_stdout
+    end
+  end
+
+  describe "#error" do
+    it "prints to stdout" do
+      expect { subject.error("error!!!") }.to output("error!!!\n").to_stdout
+    end
+
+    context "when stderr flag is enabled" do
+      before { bundle "config stderr true" }
+      it "prints to stderr" do
+        expect { subject.error("error!!!") }.to output("\e[31merror!!!\e[0m").to_stderr
+      end
+    end
+  end
+end