Merge pull request #98 from Tigerfriend1/refactor

Refactoring and Applying Design-Patterns

Author: eszdman

app/build.gradle

@@ -95,6 +95,9 @@ android {
             outputFileName = "PhotonCamera-${versionName}${versionBuild}-${variant.name}.apk"
         }
     }
+    testOptions {
+        unitTests.returnDefaultValues = true
+    }
 }
 
 dependencies {
@@ -130,6 +133,12 @@ dependencies {
     //Use this lib to detect memory leaks when debugging
     //debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.6'
     implementation 'com.quinn.hunter:hunter-debug-library:1.2.0'
+    //For Testing
+    testImplementation 'org.mockito:mockito-core:3.12.4'
+    testImplementation 'org.junit.jupiter:junit-jupiter:5.8.1'
+    implementation 'androidx.test.ext:junit:1.1.3'
+    testImplementation 'junit:junit:4.13.1'
+    androidTestImplementation 'org.testng:testng:7.1.0'
 
 }
 repositories {

app/src/androidTest/java/com/particlesdevs/photoncamera/gallery/adapters/DepthPageTransformerTest.java

@@ -0,0 +1,75 @@
+package com.particlesdevs.photoncamera.gallery.adapters;
+
+import android.app.Activity;
+import android.content.Context;
+import android.os.Bundle;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+@RunWith(AndroidJUnit4.class)
+public class DepthPageTransformerTest {
+    private DepthPageTransformer depthPageTransformer;
+    private View view;
+
+    @Before
+    public void setUp() throws Exception {
+        depthPageTransformer = new DepthPageTransformer();
+        view = new View(InstrumentationRegistry.getInstrumentation().getTargetContext());
+    }
+
+    // [-infinity, -1)
+    @Test
+    public void testVEC1(){
+        depthPageTransformer.transformPage(view, -2);
+        assertEquals(0f, view.getAlpha());
+    }
+
+    // [-1, 0]
+    @Test
+    public void testVEC2(){
+        float expected = 1f;
+        float[] positions = {-1, 0};
+        for(float position : positions){
+            depthPageTransformer.transformPage(view, position);
+            assertEquals(expected, view.getAlpha());
+        }
+    }
+    // (0, 1]
+    @Test
+    public void testVEC3(){
+        float[] positions = {0.1f, 1f};
+        float[] expected = {1-positions[0], 1-positions[1]};
+
+        for(int i=0; i< positions.length; i++){
+            depthPageTransformer.transformPage(view, positions[i]);
+            assertEquals(expected[i], view.getAlpha());
+        }
+    }
+    // (1, +Infinity]
+    @Test
+    public void testVEC4(){
+        float position = 2;
+        depthPageTransformer.transformPage(view, position);
+        assertEquals(0f, view.getAlpha());
+    }
+
+    @After
+    public void tearDown() throws Exception{
+        depthPageTransformer = null;
+        view = null;
+    }
+
+}