Refactor main module (#154)

app/src/test/java/io/github/wulkanowy/ui/main/MainPresenterTest.kt

@@ -0,0 +1,55 @@
+package io.github.wulkanowy.ui.main
+
+import io.github.wulkanowy.data.ErrorHandler
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+import org.mockito.Mockito.*
+import org.mockito.MockitoAnnotations
+
+class MainPresenterTest {
+
+    @Mock
+    lateinit var errorHandler: ErrorHandler
+
+    @Mock
+    lateinit var mainView: MainView
+
+    private lateinit var presenter: MainPresenter
+
+    @Before
+    fun initPresenter() {
+        MockitoAnnotations.initMocks(this)
+        clearInvocations(mainView)
+        presenter = MainPresenter(errorHandler)
+        presenter.attachView(mainView)
+    }
+
+    @Test
+    fun initMenuTest() {
+        verify(mainView).initBottomNav()
+        verify(mainView).initFragmentController()
+    }
+
+    @Test
+    fun onTabSelectedTest() {
+        presenter.onTabSelected(1)
+        verify(mainView).switchMenuFragment(1)
+    }
+
+    @Test
+    fun onMenuFragmentChangeTest() {
+        doReturn(mapOf(1 to "Test")).`when`(mainView).mapOfTitles()
+        presenter.onMenuFragmentChange(1)
+        verify(mainView).setViewTitle("Test")
+    }
+
+    @Test
+    fun onMenuFragmentChangeDefaultTest() {
+        doReturn(emptyMap<Int, String>()).`when`(mainView).mapOfTitles()
+        doReturn("Default").`when`(mainView).defaultTitle()
+        presenter.onMenuFragmentChange(2)
+        verify(mainView).setViewTitle("Default")
+    }
+}
+