Add AndroidManifest Permissions Test (#166)

Author: nikhilbalyan

build.gradle

@@ -124,6 +124,9 @@ dependencies {
     }
     provided "com.squareup.dagger:dagger-compiler:1.2.5"
 
+    testCompile 'org.robolectric:robolectric:3.1.2'
+    testCompile 'junit:junit:4.12'
+    testCompile 'org.robolectric:shadows-multidex:3.0'
     androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
     androidTestCompile 'com.android.support.test:runner:0.5'
     androidTestCompile 'com.android.support:support-annotations:25.3.1'

src/test/java/org/amahi/anywhere/PermissionTest.java

@@ -0,0 +1,61 @@
+package org.amahi.anywhere;
+
+import org.hamcrest.Description;
+import org.hamcrest.StringDescription;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+import org.robolectric.manifest.AndroidManifest;
+import org.robolectric.res.Fs;
+
+import java.util.List;
+
+/**
+ * Test for checking permissions in {@link AndroidManifest}
+ */
+@RunWith(RobolectricTestRunner.class)  // for the test suite when  we will want to run this from the test suite
+@Config(constants = BuildConfig.class, sdk = 23)
+public class PermissionTest {
+
+    @Test
+    public void permissionCheck() {
+        AndroidManifest androidManifest = new AndroidManifest(Fs.fileFromPath("build/intermediates/manifests/full/debug/AndroidManifest.xml"), null, null);
+        List<String> permissions = androidManifest.getUsedPermissions();
+
+        //List of expected permissions to be present in AndroidManifest.xml
+        String[] expectedPermissions = {
+                "android.permission.ACCESS_NETWORK_STATE",
+                "android.permission.DOWNLOAD_WITHOUT_NOTIFICATION",
+                "android.permission.INTERNET",
+                "android.permission.READ_EXTERNAL_STORAGE",
+                "android.permission.WRITE_EXTERNAL_STORAGE",
+                "android.permission.AUTHENTICATE_ACCOUNTS",
+                "android.permission.GET_ACCOUNTS",
+                "android.permission.MANAGE_ACCOUNTS",
+                "android.permission.USE_CREDENTIALS",
+                "android.permission.WAKE_LOCK"
+        };
+
+        //Checking expected permissions one by one
+        for (String permission : expectedPermissions) {
+            if (!permissions.contains(permission)) {
+                showError(permission);
+            }
+        }
+    }
+
+    /**
+     * Method to display missing permission error.
+     */
+    private void showError(String permission) {
+        Description description = new StringDescription();
+        description.appendText("Expected permission ")
+                .appendText(permission)
+                .appendText(" is missing from AndroidManifest.xml");
+
+        throw new AssertionError(description.toString());
+    }
+}
+
+