spec/spec_helper.rb in nanoc-4.7.1 vs spec/spec_helper.rb in nanoc-4.7.2

@@ -243,5 +243,36 @@
   end
 end
 
 RSpec::Matchers.alias_matcher :some_textual_content, :be_some_textual_content
 RSpec::Matchers.alias_matcher :some_binary_content, :be_some_binary_content
+
+RSpec::Matchers.define :send_notification do |name, *expected_args|
+  supports_block_expectations
+
+  include RSpec::Matchers::Composable
+
+  match do |actual|
+    @actual_notifications = []
+    Nanoc::Int::NotificationCenter.on(name, self) do |*actual_args|
+      @actual_notifications << actual_args
+    end
+    actual.call
+    @actual_notifications.any? { |c| c == expected_args }
+  end
+
+  description do
+    "send notification #{name.inspect} with args #{expected_args.inspect}"
+  end
+
+  failure_message do |_actual|
+    s = "expected that proc would send notification #{name.inspect} with args #{expected_args.inspect}"
+    if @actual_notifications.any?
+      s << " (received #{@actual_notifications.size} times with other arguments: #{@actual_notifications.map(&:inspect).join(', ')})"
+    end
+    s
+  end
+
+  failure_message_when_negated do |_actual|
+    "expected that proc would not send notification #{name.inspect} with args #{expected_args.inspect}"
+  end
+end