config: factor out 'system' to SystemCommandHandler

1 files changed, 34 insertions, 0 deletions

diff --git a/spec/system_command_handler_spec.rb b/spec/system_command_handler_spec.rb
new file mode 100644
index 00000000..810fd606
--- /dev/null
+++ b/spec/system_command_handler_spec.rb
@@ -0,0 +1,34 @@
+require 'stringio'
+
+RSpec.describe Pry::SystemCommandHandler do
+  describe ".default" do
+    let(:output) { StringIO.new }
+    let(:pry_instance) { Pry.new }
+
+    before { allow(Kernel).to receive(:system) }
+
+    context "when command exists" do
+      before do
+        expect(Kernel).to receive(:system).with('test-command').and_return(true)
+      end
+
+      it "executes the command without printing the warning" do
+        described_class.default(output, 'test-command', pry_instance)
+        expect(output.string).to be_empty
+      end
+    end
+
+    context "when doesn't exist" do
+      before do
+        allow(Kernel).to receive(:system).with('test-command').and_return(nil)
+      end
+
+      it "executes the command without printing the warning" do
+        described_class.default(output, 'test-command', pry_instance)
+        expect(output.string).to eq(
+          "Error: there was a problem executing system command: test-command\n"
+        )
+      end
+    end
+  end
+end