Merge b176926 into 7858775

README.md

@@ -302,6 +302,14 @@ Optionally you can provide timeout:
 spinner.join(0.5)
 ```
 
+### 2.9 tty?
+
+The spinner will not write any output if the output stream is not a TTY. You can check this with:
+
+```ruby
+spinner.tty?
+```
+
 ## 3. Configuration
 
 There are number of configuration options that can be provided to customise the behaviour of a spinner.

lib/tty/spinner.rb

@@ -474,6 +474,15 @@ def update(tokens)
       end
     end
 
+    # Check if IO is attached to a terminal
+    #
+    # return [Boolean]
+    #
+    # @api public
+    def tty?
+      output.respond_to?(:tty?) && output.tty?
+    end
+
     private
 
     # Execute a block on the proper terminal line if the spinner is running
@@ -518,15 +527,6 @@ def write(data, clear_first = false)
       end
     end
 
-    # Check if IO is attached to a terminal
-    #
-    # return [Boolean]
-    #
-    # @api public
-    def tty?
-      output.respond_to?(:tty?) && output.tty?
-    end
-
     # Emit callback
     #
     # @api private

spec/unit/tty_spec.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+RSpec.describe TTY::Spinner, "#tty?" do
+  it "responds to tty?" do
+    spinner = TTY::Spinner.new
+    expect(spinner).to respond_to(:tty?)
+  end
+end