property.get()

        then:
        def t = thrown(MissingValueException)
        t.message == "Cannot query the value of ${displayName} because it has no value available."

        when:
        property.attachOwner(owner(), displayName("<display-name>"))
        property.get()

        then:
        def t2 = thrown(MissingValueException)

        expect:
        !entryProvider.present
        entryProvider.getOrNull() == null

        when:
        entryProvider.get()

        then:
        def e = thrown(MissingValueException)
        e.message == "Cannot query the value of this provider because it has no value available."
    }

    def "entry provider has no value when key is not in map"() {
        given:

        property.getOrNull() == null
        property.getOrElse(toMutable(["other"])) == toMutable(["other"])

        when:
        property.get()

        then:
        def e = thrown(MissingValueException)
        e.message == "Cannot query the value of ${displayName} because it has no value available."
    }

    def "property has no value when set to provider with no value and other values appended"() {