Update to ruby/spec@35a9fba

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66888 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/library/openstruct/to_h_spec.rb

@@ -28,9 +28,43 @@ describe "OpenStruct#to_h" do
   end
 
   ruby_version_is "2.6" do
-    it "converts [key, value] pairs returned by the block to a hash" do
-      h = @os.to_h {|key, value| [key.to_s, value * 2]}
-      h.should == {"name" => "John SmithJohn Smith", "age" => 140, "pension" => 600}
+    context "with block" do
+      it "converts [key, value] pairs returned by the block to a hash" do
+        h = @os.to_h { |k, v| [k.to_s, v*2] }
+        h.should == { "name" => "John SmithJohn Smith", "age" => 140, "pension" => 600 }
+      end
+
+      it "raises ArgumentError if block returns longer or shorter array" do
+        -> do
+          @os.to_h { |k, v| [k.to_s, v*2, 1] }
+        end.should raise_error(ArgumentError, /element has wrong array length/)
+
+        -> do
+          @os.to_h { |k, v| [k] }
+        end.should raise_error(ArgumentError, /element has wrong array length/)
+      end
+
+      it "raises TypeError if block returns something other than Array" do
+        -> do
+          @os.to_h { |k, v| "not-array" }
+        end.should raise_error(TypeError, /wrong element type String/)
+      end
+
+      it "coerces returned pair to Array with #to_ary" do
+        x = mock('x')
+        x.stub!(:to_ary).and_return([:b, 'b'])
+
+        @os.to_h { |k| x }.should == { :b => 'b' }
+      end
+
+      it "does not coerce returned pair to Array with #to_a" do
+        x = mock('x')
+        x.stub!(:to_a).and_return([:b, 'b'])
+
+        -> do
+          @os.to_h { |k| x }
+        end.should raise_error(TypeError, /wrong element type MockObject/)
+      end
     end
   end
 end