1 files changed, 67 insertions, 0 deletions
diff --git a/spec/rubyspec/library/coverage/peek_result_spec.rb b/spec/rubyspec/library/coverage/peek_result_spec.rb
new file mode 100644
index 0000000000..44a2e2b83e
--- /dev/null
+++ b/spec/rubyspec/library/coverage/peek_result_spec.rb
@@ -0,0 +1,67 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require fixture __FILE__, 'spec_helper'
+require 'coverage'
+
+ruby_version_is '2.3' do
+  describe 'Coverage.peek_result' do
+    before :all do
+      @class_file = fixture __FILE__, 'some_class.rb'
+      @second_class_file = fixture __FILE__, 'second_class.rb'
+    end
+
+    after :each do
+      $LOADED_FEATURES.delete(@class_file)
+      $LOADED_FEATURES.delete(@second_class_file)
+    end
+
+    it 'returns the result so far' do
+      Coverage.start
+      require @class_file.chomp('.rb')
+      result = Coverage.peek_result
+      Coverage.result
+
+      result.should == {
+        @class_file => [
+          nil, nil, 1, nil, nil, 1, nil, nil, 0, nil, nil, nil, nil, nil, nil, nil
+        ]
+      }
+    end
+
+    it 'immediate second call returns same result' do
+      Coverage.start
+      require @class_file.chomp('.rb')
+      result1 = Coverage.peek_result
+      result2 = Coverage.peek_result
+      Coverage.result
+
+      result2.should == result1
+    end
+
+    it 'second call after require returns accumulated result' do
+      Coverage.start
+      require @class_file.chomp('.rb')
+      Coverage.peek_result
+      require @second_class_file.chomp('.rb')
+      result = Coverage.peek_result
+      Coverage.result
+
+      result.should == {
+        @class_file => [
+          nil, nil, 1, nil, nil, 1, nil, nil, 0, nil, nil, nil, nil, nil, nil, nil
+        ],
+        @second_class_file => [
+          1, 1, 0, nil, nil
+        ]
+      }
+    end
+
+    it 'call right before Coverage.result should give equal result' do
+      Coverage.start
+      require @class_file.chomp('.rb')
+      result1 = Coverage.peek_result
+      result2 = Coverage.result
+
+      result1.should == result2
+    end
+  end
+end