You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: boolean_test.go
    path of file: ./repos/ferret/pkg/runtime/values
    
    the code of the file until where you have to start completion: package values_test

import (
	"testing"

	. "github.com/smartystreets/goconvey/convey"

	"github.com/MontFerret/ferret/pkg/runtime/core"
	"github.com/MontFerret/ferret/pkg/runtime/values"
	"github.com/MontFerret/ferret/pkg/runtime/values/types"
)

func TestBoolean(t *testing.T) {
	Convey(".MarshalJSON", t, func() {
		Convey("Should serialize a boolean items", func() {
			b := values.True
			marshaled, err := b.MarshalJSON()

			So(err, ShouldBeNil)

			So(string(marshaled), ShouldEqua
    
func TestBoolean(t *testing.T) {
	Convey(".MarshalJSON", t, func() {
		Convey("Should serialize a boolean items", func() {
			b := values.True
			marshaled, err := b.MarshalJSON()

			So(err, ShouldBeNil)

			So(string(marshaled), ShouldEqual, "true")
		})
	})

	Convey(".Type", t, func() {
		Convey("Should return a type", func() {
			So(values.True.Type().Equals(types.Boolean), ShouldBeTrue)
		})
	})

	Convey(".Unwrap", t, func() {
		Convey("Should return an unwrapped items", func() {
			So(values.True.Unwrap(), ShouldHaveSameTypeAs, true)
		})
	})

	Convey(".String", t, func() {
		Convey("Should return a string representation ", func() {
			So(values.True.String(), ShouldEqual, "true")
		})
	})

	Convey(".Compare", t, func() {
		Convey("It should return 1 when compared to None", func() {
			So(values.True.Compare(values.None), ShouldEqual, 1)
		})

		Convey("It should return -1 for all non-boolean values", func() {
			vals := []core.Value{
				values.NewString("foo"),
				values.NewInt(1),
				values.NewFloat(1.1),
				values.NewArray(10),
				values.NewObject(),
			}

			for _, v := range vals {
				So(values.True.Compare(v), ShouldEqual, -1)
				So(values.False.Compare(v), ShouldEqual, -1)
			}
		})

		Convey("It should return 0 when both are True or False", func() {
			So(values.True.Compare(values.True), ShouldEqual, 0)
			So(values.False.Compare(values.False), ShouldEqual, 0)
		})

		Convey("It should return 1 when other is false", func() {
			So(values.True.Compare(values.False), ShouldEqual, 1)
		})

		Convey("It should return -1 when other are true", func() {
			So(values.False.Compare(values.True), ShouldEqual, -1)
		})
	})

	Convey(".Hash", t, func() {
		Convey("It should calculate hash", func() {
			So(values.True.Hash(), ShouldBeGreaterThan, 0)
			So(values.False.Hash(), ShouldBeGreaterThan, 0)
		})

		Convey("Hash sum should be consistent", func() {
			So(values.True.Hash(), ShouldEqual, values.True.Hash())
			So(values.False.Hash(), ShouldEqual, values.False.Hash())
		})
	})
}