project.convention.plugins.test = new TestConvention()
        project.convention.archivesBaseName = 'someothername'
        project."$propertyName" = expectedValue

        then:
        project."$propertyName" == expectedValue
        project.convention."$propertyName" == 'someothername'
    }

    def propertyMissingWithNullProperty() {
        when:
        project.ext.nullProp = null