Issue #4810: Add tests

        assertTrue(tab.content.private)

    }

    @Test

    fun `Add session with parent`() {

        val store = BrowserStore()

        val sessionManager = SessionManager(engine = mock(), store = store)

        assertTrue(sessionManager.sessions.isEmpty())

        assertTrue(store.state.tabs.isEmpty())

        val parent = Session("https://www.mozilla.org")

        sessionManager.add(parent)

        assertEquals(1, sessionManager.sessions.size)

        assertEquals(1, store.state.tabs.size)

        sessionManager.add(Session("https://getpocket.com"))

        // Make sure child tab was added next to parent

        val child = Session("https://www.firefox.com")

        sessionManager.add(child, parent = parent)

        assertEquals(3, sessionManager.sessions.size)

        assertEquals(parent, sessionManager.all.toTypedArray()[0])

        assertEquals(child, sessionManager.all.toTypedArray()[1])

        assertEquals(3, store.state.tabs.size)

        assertEquals("https://www.mozilla.org", store.state.tabs[0].content.url)

        assertEquals("https://www.firefox.com", store.state.tabs[1].content.url)

    }

    @Test

    fun `Add custom tab session`() {

        val store = BrowserStore()