Android :: Test Data Sources In Android Unit Testing
Jan 27, 2010
I want to test parsing of data returned from server.I thought I might create several test XML files and then feed them to the sax parser which uses my custom data handler (as in the application that I test).But where should I put those test XMLs?I tried with [project_root] /res/xml, but then I get the error: android.content.res.Resources $NotFoundException: Resource ID #0x7f040000 type #0x1c is not valid at android.content. res. Resources. loadXml ResourceParser(Resources.java:1870)at android.content.res. Resources. getXml(Resources. java:779) Does that mean that the xml is invalid, or that android couldn't find the XML file?(I use the same XML that comes from the server - copied it from the firebug's net panel and pasted into the file).Can I somehow read that XML as a text file, since etContext(). getResources() .getXml (R.xml.test_response1) returns XmlResourceParser instead of String (which I'd prefer)?
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Jul 3, 2009
I my main app and tests are organized like this (standard from "android create project"): AndroidManifest.xml assets/ main app asset files src/tests/AndroidManifest.xml -- uses <instrumentation> to point to the main app assets/ -- test-specific asset files src/ Writing test cases with AndroidTestCase, I'd like to load asset files from the test-specific assets/ directory, not from the main app assets/ directory. How can I accomplish that? The normal way to load an asset would be getContext().getAssets().open ("foo.txt"), for assets/foo.txt in the main app. I assume I just have to somehow change the Context or the AssetManager to point to the test- specific assets directory, but I don't see any way to do that. I have looked into the tests/bin/MyApp-debug.apk to confirm that the test assets are in there. Now I just need a way to access them.
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Sep 24, 2010
I'm writing an Android JUnit test and want to copy/reset a test fixture file (it's an SQLite database file.) If I were within the main application, I know I could just place the file in the assets directory and use getResources().getAssets().open(sourceFile).However, this API appears to be unavailable from the ActivityInstrumentationTestCase2 class.Is there an easy way to copy a file over from the testing PC, or should I just keep a fresh copy of a test fixture on the device and copy it over a temporary file?
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Aug 23, 2009
I am using ActivityInstrumentationTestCase2 to do some test for an activity. I get a button in the setUp() method like this: protected void setUp() throws Exception {super.setUp(); act = getActivity(); btn = Button)act.find ViewById ( R.id.bike_button ); // this button has been defined in layout} Then I use this button to perform a click in a test method like this: public void testBikeButton(){ //click the bike button btn.performClick();}
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Nov 9, 2010
I'm working on a school project and I'm researching testing possibilities for Android applications. On this page: http: // developer . android . com/ resources / tutorials /testing /hello android. Google writes about a unit test. Is this really a unit test? A Unit test will not integrate all classes and will not test in his context. So my opinion is it is not a Unit Test but an Integration Test.
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Jul 14, 2010
I was finally able to build and debug the android platform (the process can be seen here). Now, the question is: where are the unit tests, how do I launch them and where do I see results? And also, is there any guide to android platform architecture?
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Nov 17, 2010
There is no way to load a string from a specific locale's language file.
What I want to do is run all my locales' (I have 24 of them) time format strings through unit tests to make sure they don't crash. For example, here's a date format string in French: "'Hier à ' h:mm a".
These really need to be unit tested, because translators aren't great about properly escaping these strings, causing crashes unless we manually verify every string in every language every time we get a translation pass back.
This question has a sort-of answer. Is that really the only way? Is there a better way to specify the locale of a Context in unit tests?
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Oct 5, 2010
I have a class that uses a Handler for a timed, asynchronous activity.
Something like this:
CODE:.................
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Mar 30, 2010
I'm trying to start unit testing on my application (should have done so from the beginning). I've got an Eclipse project structure set up and everything seems to work well, but...
I'm subclassing SQLiteOpenHelper to access the application database. This works well for the application, but when using the same class in the unit tests, it writes to the same database as the actual application. This is obviously rather irritating, since unit test data shows up when developing and testing the actual application.
What's the best way to make the SQLiteOpenHelper class write to a different database file when being called from the unit tests?
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Dec 6, 2009
I have a very simple activity created with one seek bar. I'm trying to figure out how best to unit test the events.
Below is how I have the seek bar wired up in my activity.
CODE:.........
So with this I have a test class that extends ActivityInstrumentationTestCase and I have test method.
Should I not be able to so something like this? Right now I'm getting Test run failed: String resource ID #0x2 with this code.
CODE:....................
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Oct 8, 2010
I want to start with a consistent test environment so I need to reset/clear my preferences. Here's the SetUp for test I have so far. It's not reporting any errors, and my tests pass, but the preferences are not being cleared.
I'm testing the "MainMenu" activity, but I temporarily switch to the OptionScreen activity (which extends Android's PreferenceActivity class.)
I do see the test correctly open the OptionScreen during the run.
CODE
:...............
StartNewActivity Code:
CODE:.................
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Oct 27, 2010
I'm trying to run unit tests on my Android app and I'm getting a NoClassDefFoundError when referencing 3rd party jars.
The classes in those jars are only referenced by the app itself, not the unit tests. The jars are on the apps classpath and have been exported in the eclipse settings to allow tyhem to be found by dependant apps - which, of course, the test app is.
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Feb 22, 2010
I need to run unit tests for code that references SQLiteDatabase for my Android code; however all my attempts to instantiate this object outside the emulator (on my desktop machine) have failed. JDBC on Android is not being recommended on the Net, hence it's out of the question (I could have provided mock objects very easily that way).
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Nov 16, 2010
Sorry if this is a bit of a vague question, however im struggling to find a single solid example on how to do unit testing (isolated testing) with Android. So one project contains models and logic, then another project contains tests for said library. There is no front end or UI, so I want to do the bare minimum to just be able to test that my methods all work in isolation.
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Mar 8, 2010
I just switched the way my Android project is being built and non of my unit tests work any more...I get errors like WARN/dalvikvm(575): VFY: unable to resolve static field X in WARN/dalvikvm(575): VFY: unable to find class referenced in signature These errors only come from my Unit Tests, where classes defined in it can't even see other classes defined in the unit test. Before each project had it's own directory with copies of the 3rd party jar files. I've read around that Dex does weird things with references but haven't been able to figure out how to fix this problem. Is there a better way to do this? I would love to see an example of a large Android workspace where there are multiple projects, jar references, etc.Is it possible to fix this with an Order/Export tweak ?
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Oct 23, 2009
I have downloaded donut branch and build for emulator. I am running the author test case in the following way cd /data;test_pvauthorengine -test 5 5 -video yuvtestinput.yuv - videoconfigfile mp4_config.cfg -audio amrtestinput.amr - audioconfigfile amr_config.cfg -output mp4.3gp Starting Test 5: AMR & YUV to AV using M4V Encoder .3gp Test PVSCHED:Scheduler 'PVAuthorEngineTestScheduler', Thread 0xafe43c24: Error! AO PvmiMIOFileInput Error 101 not handled PVSCHED:Scheduler 'PVAuthorEngineTestScheduler', Thread 0xafe43c24: Error! Reason 101
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May 21, 2010
I am trying to unit test a class that does SAX parsing and creates an object.This class takes a string as a parameter representing the URL of a document on the internet, parses it and then creates an object based on the contents.I don't want to have the unit tests actually access the network, so I'd like to have a few test xml files to parse. However I can't figure out how to access them from my AndroidTestCases. I don't want to include the test files with the actual application, I want them in the test project (it's a separate project, as is the norm for Android tests from what I could gather - due to the need to have a custom AndroidManifest.xml, for one).One way would be to put the XML files in the test project's assets directory, I can read them using getContext() .getAssets().open(filename) into an InputStream in the test case, but my class expects a URL string. I'd rather not have to provide an InputStream to this class instead of the current URL string. I can test just the parsing by making two methods, one that takes a string and one an Inputstream, and test the second, but how can I then test the one that just takes a string?How should I design my class and or tests to circumvent this problem?
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Oct 8, 2009
Being able to write Android apps in regular Java is a huge win. However, I am confused about unit testing Android apps. Many of the 'best practices' seem to boil down to 'split your business logic off, and test it separately using JUnit'. This is great as far as it goes. And I understand that truly testing the UI will require firing up the emulator. But it seems there is a category of UI tests that I should be able to run without the emulator. The various Mockxxx classes seem to be going a long way towards this. But why (oh why oh why!) do they all. throw new RuntimeException( "Stub!" ); in their constructors? I can understand them doing this in their METHODS (then I could subclass them as needed) but why their constructors? I cannot stop this functionality so I cannot do (limited but useful) UI tests such as public TextView createTextView ( Context context ) {return new TextView( context );
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Jul 9, 2010
I am creating an EditText object which i then try to reference in a unit test. what is the best way to add a new 'id' to R.id for this dynamically created object so that i can later reference it via findViewById() in the unit test?
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Feb 6, 2009
I follow the following example in creating a Parcelable object: http://code.google.com/android /reference / android /os / Parcelable .html . Writing unit test for parcelable object
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Mar 20, 2010
i'm trying to write an unit test for my Android's RelativeLayout. Currently, my testcode setup is as follow:public class SampleRelativeLayoutTest extends AndroidTestCase {private ViewGroup testView;private ImageView icon;private TextView title;@Overrideprotected void setUp() throws Exception {super.setUp();
// inflate the layout
final Context context = getContext();
final LayoutInflater inflater = LayoutInflater.from(context);
testView = (ViewGroup) inflater.inflate(R.layout.sample_layout,
null);
// manually measure and layout
testView.measure(500, 500);
testView.layout(0, 0, 500, 500);
// init variables
icon = (ImageView) testView.findViewById(R.id.icon);
title = (TextView) testView.findViewById(R.id.title);
}However, I encountered NullPointerException with the following stack tracejava.lang.NullPointerException
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:427)
at android.view.View.measure(View.java:7964)
at com.dqminh.test.view.SampleRelativeLayoutTest.setUp(SampleRelativeLayoutTest.java:33)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:430)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1447)
What should I change in my setUp() code to make the test run properly ?
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May 10, 2010
I am starting with an Activity based off of this ShakeActivity and I want to write some unit tests for it. I have written some small unit tests for Android activities before but I'm not sure where to start here. I want to feed the accelerometer some different values and test how the activity responds to it. For now I'm keeping it simple and just updating a private int counter variable and a TextView when a "shake" event happens. So my question largely boils down to this: How can I send fake data to the accelerometer from a unit test?
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Nov 3, 2010
I approached this problem as an oh hey that's not too bad, I can write a bunch of unit tests, and I have been keeping my suite green. However as things get more involved continuous integration and testing is a great great thing to have. And then I saw oh Android has emma integration as well awesome ... and then that's where it get's iffy. So I setup Hudson and have it call the coverage target of the ant build.xml that the android executable in the sdk can generate. And then it hits me. adb -s <emulator> shell am instrument -w ... will never return a result code that is not 0 ... because adb technically exited cleanly and usually will regardless of how the shell command that executed did..............
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Mar 30, 2010
I'm writing unit tests for a ListActivity in Android that uses a handler to update a ListAdapter. While my activity works in the Android emulator, running the same code in a unit test doesn't update my adapter: calls to sendEmptyMessage do not call handleMessage in my activity's Handler. How do I get my ActivityUnitTestCase to sync with the MessageQueue thread and call my Handler?
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Dec 18, 2009
What is the easiest way to create some kind of test harness for Android apps and to be able to visualize (even on the emulator) what is going into the db? I want to test things like constraints, look at the data, unit test methods, etc. Is there any kind of GUI tool that I can hook up to the emulator to be able to look at the db of a particular app while I'm developing/testing, or are my only options the adb shell and creating test Activities within my app?
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Feb 8, 2010
Is there anything to test the UI of an Android app like Jemmy for Swing?
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Feb 3, 2009
Can you please tell me if you know how to get the Andorid unit test instrementation to call my activity's onActivityResult()?
I can't find anything here: http://code.google.com/android/reference/android/app/Instrumentation.
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Aug 6, 2010
I'm new to android unit testing. I'm trying to write a unit test for the Phone application:
package com.android.phone;
import android.content.Intent;
import android.net.Uri;
import android.test.ApplicationTestCase;
import android.test.suitebuilder.annotation.MediumTest;
import com.android.phone.PhoneApp;
import dalvik.annotation.TestTargetClass;...............
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Feb 2, 2009
I can run the unit test cases either by :
1. command line ' adb shell am instrument -w com.example.android.apis.tests/android.test.InstrumentationTestRunner'
2. Go to 'Dev' and clicks 'Instrumentation' and click 'Test API Demo'.But my questions now is, how can I debug my unit test cases? I try 'Debug' my APIDemoTest eclipse project and then do #2 above, it did not break at any of my breakpoints I setup.
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Nov 16, 2010
Here is my manifest file:<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android=" http://schemas. android. com /apk/res/android" package="com. wsandroid.test" android:version Code= "1" android:versionName="1.0"><application android:icon="@drawable/icon" android : label ="@string/app_name"><uses-library android:name="android.test.runner" /></application> <uses-sdk android:minSdkVersion="3" /><instrumentation android:targetPackage="com.wsandroid" android :name="android.test.InstrumentationTestRunner" />
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