android - Unit Testing ActiveAndroid Models Using Robolectric -

i using activeandroid of models, , wanted start unit testing work. unfortunately, getting load of errors, namely in being unable initialize activeandroid using proper context.

activeandroid iniatilized:

activeandroid.initialize(context)

i have tried initialize context by:

1. have stub class extends application, , use initialize db.

   private class testapp extends com.activeandroid.app.application{    @override    public void oncreate() {      super.oncreate();      initialisedb(getdatabasename());    }     protected string getdatabasename() {      return "sad";    }     private void initialisedb(string dbname) {       activeandroid.initialize(this);     } } 

this fails, class return null .getpackagename() , .getapplicationcontext(), both of used internally initialize.

i have tried using shadowcontextwrapper, may using wrong. here how went it:

    shadowcontextwrapper shadowcontextwrapper = new shadowcontextwrapper();     shadowcontextwrapper.setapplicationname("appname");     shadowcontextwrapper.setpackagename("package");     context context = shadowcontextwrapper.getapplicationcontext(); 

this approach fails npe @ shadowcontextwrapper.java:52 part of robolectric. line itself:

    context applicationcontext = this.realcontextwrapper.getbasecontext().getapplicationcontext(); 

i using 1.2, robolectric3.0 , activeandroid 3.1.

here example of test running.

@runwith(customrobolectrictestrunner.class)    public class itemtest {       public void setup(){       }      @test     public void checkjunitwork() {        assertthat(true, is(true));     }      @test     public void testsave(){        item item = new item("name", "units", 5.0, 4.5, 10.0);        assertthat(item.getname(),is("name"));     }     public void teardown(){     } } 

my custom runner follows:

public class customrobolectrictestrunner extends robolectrictestrunner {  public customrobolectrictestrunner(class<?> testclass)         throws initializationerror {     super(testclass);     string buildvariant = (buildconfig.flavor.isempty()             ? "" : buildconfig.flavor+ "/") + buildconfig.build_type;     string intermediatespath = buildconfig.class.getresource("")             .tostring().replace("file:", "");     intermediatespath = intermediatespath             .substring(0, intermediatespath.indexof("/classes"));      system.setproperty("android.package",             buildconfig.application_id);     system.setproperty("android.manifest",             intermediatespath + "/manifests/full/"                     + buildvariant + "/androidmanifest.xml");     system.setproperty("android.resources",             intermediatespath + "/res/" + buildvariant);     system.setproperty("android.assets",             intermediatespath + "/assets/" + buildvariant);      shadowcontextwrapper shadowcontextwrapper = new shadowcontextwrapper();     shadowcontextwrapper.setapplicationname("appname");     shadowcontextwrapper.setpackagename("package");     context context = shadowcontextwrapper.getapplicationcontext();      activeandroid.initialize(context);  } 

}

so, issue you're having tests testapp not running. running, need setup test use manifest specifies testapp application run.

setup testapp follows somewhere in /test directory of source tree... e.g. /src/test/java/some-long-package/testapp.java:

package com.some.company;  public class testapp extends application {     @override     public void oncreate() {         super.oncreate();         activeandroid.initialize(this);     } } 

this important part

create android manifest file in /test tree of source. have manifest file specify testapp application. so, create manifest @ path /src/test/resources/testmanifest.xml containing following:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.android.test">          <application android:name="com.some.company.testapp">      </application> </manifest> 

i'd recommend getting rid of customrobolectrictestrunner default robolectric 3.0 test runner of need done. if need test various build variants, use @runwith(robolectricgradletestrunner.class).

but now, setup tests follows:

@runwith(robolectrictestrunner.class) @config(constants = buildconfig.class, manifest = "src/test/resources/testmanifest.xml", sdk = build.version_codes.lollipop) public class mainapptest {      @test     public void runtimeapplicationshouldbetestapp() throws exception {        string actualname = runtimeenvironment.application.getclass().getname();        string expectedname = testapp.class.getname();        assert(actualname).equals(expectedname);     } } 

that @config(manifest= ...) bit setup robolectric use test manifest , test application. test above simple validates application context being used within test indeed testapp.class ensure activeandroid initialized correctly test.

i agree eugen may trying little bit in tests. testing db through application, creating integration test. i'd recommend splitting out functionality as possible.

happy testing!