- Adding a small test to count transaction list items

app/build.gradle

@@ -27,12 +27,15 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    //androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    androidTestCompile('com.android.support.test.espresso:espresso-core:3.0.1', {
             exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:26.+'
+    compile 'com.android.support:appcompat-v7:26.1.0'
     compile 'com.android.support.constraint:constraint-layout:1.0.2'
     testCompile 'junit:junit:4.12'
+    testCompile 'org.mockito:mockito-core:1.10.19'
+    //testCompile 'com.android.support.test:runner:1.0.1'
 
     compile "android.arch.lifecycle:runtime:1.0.0-alpha9-1"
     compile "android.arch.lifecycle:extensions:1.0.0-alpha9-1"

app/src/androidTest/java/carbon/crypto/com/carbon/Assertions/RecyclerViewItemsCountAssertion.java

@@ -0,0 +1,32 @@
+package carbon.crypto.com.carbon.Assertions;
+
+import android.support.test.espresso.NoMatchingViewException;
+import android.support.test.espresso.ViewAssertion;
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+
+/**
+ * Created by Henry Varona on 19/9/2017.
+ */
+
+public class RecyclerViewItemsCountAssertion implements ViewAssertion {
+    private final int expectedCount;
+
+    public RecyclerViewItemsCountAssertion(int expectedCount) {
+        this.expectedCount = expectedCount;
+    }
+
+    @Override
+    public void check(View view, NoMatchingViewException noViewFoundException) {
+        if (noViewFoundException != null) {
+            throw noViewFoundException;
+        }
+
+        RecyclerView recyclerView = (RecyclerView) view;
+        RecyclerView.Adapter adapter = recyclerView.getAdapter();
+        assertThat(adapter.getItemCount(), is(expectedCount));
+    }
+}

app/src/androidTest/java/carbon/crypto/com/carbon/ExampleInstrumentedTest.java

@@ -1,26 +0,0 @@
-package carbon.crypto.com.carbon;
-
-import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.*;
-
-/**
- * Instrumentation test, which will execute on an Android device.
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-@RunWith(AndroidJUnit4.class)
-public class ExampleInstrumentedTest {
-    @Test
-    public void useAppContext() throws Exception {
-        // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getTargetContext();
-
-        assertEquals("carbon.crypto.com.carbon", appContext.getPackageName());
-    }
-}

app/src/androidTest/java/carbon/crypto/com/carbon/TransactionListTest.java

@@ -0,0 +1,74 @@
+package carbon.crypto.com.carbon;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import android.support.test.InstrumentationRegistry;
+import android.support.test.rule.ActivityTestRule;
+import android.support.test.runner.AndroidJUnit4;
+
+import java.util.Calendar;
+import java.util.Date;
+
+import carbon.crypto.com.carbon.Assertions.RecyclerViewItemsCountAssertion;
+import cy.agorise.crystalwallet.IntroActivity;
+import cy.agorise.crystalwallet.R;
+import cy.agorise.crystalwallet.dao.CrystalDatabase;
+import cy.agorise.crystalwallet.models.CryptoCoinTransaction;
+
+import static android.support.test.espresso.Espresso.onView;
+import static android.support.test.espresso.matcher.ViewMatchers.withId;
+
+/**
+ * Created by Henry Varona on 19/9/2017.
+ */
+@RunWith(AndroidJUnit4.class)
+public class TransactionListTest {
+    CrystalDatabase db;
+
+    @Before
+    public void addingTransactions(){
+        Calendar cal = Calendar.getInstance();
+
+        this.db = CrystalDatabase.getAppDatabase(InstrumentationRegistry.getTargetContext());
+        cal.set(2017,01,01,01,01,01);
+        CryptoCoinTransaction newTransaction = new CryptoCoinTransaction();
+        newTransaction.setAmount(1);
+        newTransaction.setFrom("friend1");
+        newTransaction.setTo("me1");
+        newTransaction.setDate(cal.getTime());
+        db.transactionDao().insertTransaction(newTransaction);
+
+        cal.set(2017,02,02,02,02,02);
+        newTransaction = new CryptoCoinTransaction();
+        newTransaction.setAmount(2);
+        newTransaction.setFrom("friend2");
+        newTransaction.setTo("me2");
+        newTransaction.setDate(cal.getTime());
+        db.transactionDao().insertTransaction(newTransaction);
+
+        cal.set(2017,03,03,03,03,03);
+        newTransaction = new CryptoCoinTransaction();
+        newTransaction.setAmount(3);
+        newTransaction.setFrom("friend3");
+        newTransaction.setTo("me3");
+        newTransaction.setDate(cal.getTime());
+        db.transactionDao().insertTransaction(newTransaction);
+    }
+
+    @Rule
+    public ActivityTestRule<IntroActivity> activityTestRule = new ActivityTestRule<IntroActivity>(IntroActivity.class);
+
+    @Test
+    public void numberOfTransactionsInList(){
+        onView(withId(R.id.transactionListView)).check(new RecyclerViewItemsCountAssertion(3));
+    }
+
+    @After
+    public void deleteTransactions(){
+        this.db.transactionDao().deleteAllTransactions();
+    }
+}

app/src/main/java/cy/agorise/crystalwallet/dao/TransactionDao.java

@@ -25,4 +25,7 @@ public interface TransactionDao {
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     public void insertTransaction(CryptoCoinTransaction... transactions);
+
+    @Query("DELETE FROM crypto_coin_transaction")
+    public void deleteAllTransactions();
 }