Add sample test for auth screen

Author: rostikjoystick

app/src/androidTest/java/org/stepik/android/view/auth/ui/activity/AuthSampleTest.kt

@@ -0,0 +1,34 @@
+package org.stepik.android.view.auth.ui.activity
+
+import androidx.test.ext.junit.rules.ActivityScenarioRule
+import com.kaspersky.kaspresso.testcases.api.testcase.TestCase
+import org.junit.Rule
+import org.junit.Test
+
+class AuthSampleTest : TestCase() {
+    @get:Rule
+    val activityTestRule = ActivityScenarioRule(SocialAuthActivity::class.java)
+
+    @Test
+    fun test() =
+        run {
+            step("Open Social Auth Screen") {
+                testLogger.d("I am testLogger")
+                SocialAuthScreen {
+                    signInWithEmailButton {
+                        isVisible()
+                        click()
+                    }
+                }
+            }
+
+            step("Open Credential Auth Screen") {
+                CredentialAuthScreen {
+                    loginField.isVisible()
+                    loginField.typeText("test@stepik.org")
+                    passwordField.typeText("stepikthebest")
+                    loginField.hasText("test@stepik.org")
+                }
+            }
+        }
+}

app/src/androidTest/java/org/stepik/android/view/auth/ui/activity/CredentialAuthScreen.kt

@@ -0,0 +1,14 @@
+package org.stepik.android.view.auth.ui.activity
+
+import org.stepic.droid.R
+import com.kaspersky.kaspresso.screens.KScreen
+import io.github.kakaocup.kakao.edit.KEditText
+
+object CredentialAuthScreen : KScreen<CredentialAuthScreen>() {
+    override val layoutId: Int = R.layout.activity_auth_credential
+    override val viewClass: Class<*> = CredentialAuthActivity::class.java
+
+    val loginField = KEditText { withId(R.id.loginField) }
+    val passwordField = KEditText { withId(R.id.passwordField) }
+
+}

app/src/androidTest/java/org/stepik/android/view/auth/ui/activity/SocialAuthScreen.kt

@@ -0,0 +1,13 @@
+package org.stepik.android.view.auth.ui.activity
+
+import com.kaspersky.kaspresso.screens.KScreen
+import io.github.kakaocup.kakao.text.KButton
+import org.stepic.droid.R
+
+object SocialAuthScreen : KScreen<SocialAuthScreen>() {
+
+    override val layoutId: Int = R.layout.activity_auth_social
+    override val viewClass: Class<*> = SocialAuthActivity::class.java
+
+    val signInWithEmailButton = KButton { withId(R.id.signInWithEmail) }
+}