Merge pull request #1 from chrishunt/always-mute

Always mute when no block is provided

README.md

@@ -42,7 +42,7 @@ puts output
   #=> Oops!
 ```
 
-Or use it in your test suite:
+Use it in your test suite to verify output:
 
 ```ruby
 require 'mute'
@@ -60,6 +60,15 @@ describe MyLogger do
 end
 ```
 
+Or just mute stdout completely for the whole test suite:
+
+```ruby
+# spec/spec_helper.rb
+require 'mute'
+
+Mute::IO.capture_stdout
+```
+
 ## Installation
 
 ```bash

lib/mute/io.rb

@@ -20,7 +20,7 @@ def self.capture(stream, block)
 
       captured.string
     ensure
-      eval "$#{stream} = original"
+      eval "$#{stream} = original" if block
     end
   end
 end

spec/mute/io_spec.rb

@@ -43,8 +43,12 @@
       expect($stdout).to eq original
     end
 
-    it 'does not require a block' do
-      expect { described_class.capture_stdout }.to_not raise_error
+    it 'captures stdout indefinitely when called without a block' do
+      expect($stdout).to_not receive(:puts)
+
+      described_class.capture_stdout
+
+      puts 'hello'
     end
   end