Added Input Validation tests and Imroved Modularity of code

sample/build.gradle

@@ -58,6 +58,8 @@ dependencies {
     implementation 'com.google.code.gson:gson:2.8.5'
 
     testImplementation 'junit:junit:4.12'
+    testImplementation 'org.mockito:mockito-core:2.7.22'
+    androidTestImplementation 'org.mockito:mockito-android:2.7.22'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
 

sample/src/androidTest/java/org/aerogear/graphqlandroid/ExampleInstrumentedTest.kt → sample/src/androidTest/java/org/aerogear/graphqlandroid/InstrumentedTest.kt

@@ -2,23 +2,30 @@ package org.aerogear.graphqlandroid
 
 import android.support.test.InstrumentationRegistry
 import android.support.test.runner.AndroidJUnit4
+import org.aerogear.offix.getDao
 
 import org.junit.Test
 import org.junit.runner.RunWith
 
 import org.junit.Assert.*
+import org.junit.runners.JUnit4
 
 /**
  * Instrumented test, which will execute on an Android device.
  *
  * See [testing documentation](http://d.android.com/tools/testing).
  */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
+@RunWith(JUnit4::class)
+class InstrumentedTest {
     @Test
     fun useAppContext() {
         // Context of the app under test.
         val appContext = InstrumentationRegistry.getTargetContext()
+        val args = InstrumentationRegistry.getArguments()
         assertEquals("com.lavanya.graphqlandroid", appContext.packageName)
+        assertEquals(0.1010001, args.getDouble("0.1010001"))
+        assertEquals(true, "test".contains("s"))
+        assertEquals("TasksApp", appContext.resources.getString(R.string.app_name)) //TODO: change it if you ever change the app name
+        assertEquals(0, getDao()?.getAllMutations()?.size);
     }
 }

sample/src/main/java/org/aerogear/graphqlandroid/InputValidator.kt

@@ -0,0 +1,33 @@
+package org.aerogear.graphqlandroid
+
+import java.util.regex.Pattern
+
+object InputValidator{
+     val EMAIL_PATTERN = Pattern.compile(
+         "[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" +
+         "\\@" +
+         "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" +
+         "(" +
+         "\\." +
+         "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" +
+         ")+"
+     )
+    fun taskValidation(id: String, title: String, description: String): Boolean{
+        return (description.length <= 360
+                && id.length!=0
+                && title.length<100)
+    }
+    fun userValidation(idUser: String,
+                             taskId: String,
+                             title: String,
+                             firstName: String,
+                             lastName: String,
+                             email: String): Boolean{
+        return (firstName.length<20
+                && lastName.length<20
+                && EMAIL_PATTERN.matcher(email).matches()
+                && idUser.length!=0
+                && taskId.length!=0
+                && title.length<100)
+    }
+}