1 files changed, 73 insertions, 0 deletions
diff --git a/spec/bundler/bundler/ui/shell_spec.rb b/spec/bundler/bundler/ui/shell_spec.rb
new file mode 100644
index 0000000000..951a446aff
--- /dev/null
+++ b/spec/bundler/bundler/ui/shell_spec.rb
@@ -0,0 +1,73 @@
+# frozen_string_literal: true
+
+RSpec.describe Bundler::UI::Shell do
+  subject { described_class.new }
+
+  before { subject.level = "debug" }
+
+  describe "#info" do
+    before { subject.level = "info" }
+    it "prints to stdout" do
+      expect { subject.info("info") }.to output("info\n").to_stdout
+    end
+  end
+
+  describe "#confirm" do
+    before { subject.level = "confirm" }
+    it "prints to stdout" do
+      expect { subject.confirm("confirm") }.to output("confirm\n").to_stdout
+    end
+  end
+
+  describe "#warn" do
+    before { subject.level = "warn" }
+    it "prints to stdout", :bundler => "< 2" do
+      expect { subject.warn("warning") }.to output("warning\n").to_stdout
+    end
+
+    it "prints to stderr", :bundler => "2" do
+      expect { subject.warn("warning") }.to output("warning\n").to_stderr
+    end
+
+    context "when stderr flag is enabled" do
+      before { Bundler.settings.temporary(:error_on_stderr => true) }
+      it "prints to stderr" do
+        expect { subject.warn("warning!") }.to output("warning!\n").to_stderr
+      end
+    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
+    before { subject.level = "error" }
+
+    it "prints to stdout", :bundler => "< 2" do
+      expect { subject.error("error!!!") }.to output("error!!!\n").to_stdout
+    end
+
+    it "prints to stderr", :bundler => "2" do
+      expect { subject.error("error!!!") }.to output("error!!!\n").to_stderr
+    end
+
+    context "when stderr flag is enabled" do
+      before { Bundler.settings.temporary(:error_on_stderr => true) }
+      it "prints to stderr" do
+        expect { subject.error("error!!!") }.to output("error!!!\n").to_stderr
+      end
+
+      context "when stderr is closed" do
+        it "doesn't report anything" do
+          output = capture(:stderr, :closed => true) do
+            subject.error("Something went wrong")
+          end
+          expect(output).to_not eq("Something went wrong\n")
+        end
+      end
+    end
+  end
+end