test_doubles__dummies.kt

@Test fun `a newly created browser does not have an active URL`() {
    val browser = Browser(dummyHistory)

    assertThat(browser.activeURL, absent())
}

@Test fun `a visited URL is an active URL`() {
    val browser = Browser(dummyHistory)

    browser.visit(URL("https://www.le0nidas.gr"))

    assertThat(browser.activeURL, equalTo(URL("https://www.le0nidas.gr")))
}

private val dummyHistory = object : History {
    override fun push(url: URL) {

    }

    override fun pop(): URL {
        TODO("Not yet implemented")
    }

    override fun peek(): URL {
        TODO("Not yet implemented")
    }
}