In-app billing testing RESULT_DEVELOPER_ERROR
I'm testing app on my phone with developer account and with test items (android.test.purchased). When i call isBillingSupported() method, my ResponseCode is RESULT_DEVELOPER_ERROR. I didn't publish app on market, but i read that it is unnecessary because i use android.test.purchased. 

    <uses-permission android:name="android.permission.INTERNET"/>
        <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
        <uses-permission android:name="android.permission.READ_OWNER_DATA"/>
        <uses-permission android:name="android.permission.WRITE_OWNER_DATA"/>        
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  
        <uses-permission android:name="com.android.vending.BILLING"/>
In-app billing testing RESULT_DEVELOPER_ERROR
===

I'm testing app on my phone with developer account and with test items (android.test.purchased). When i call isBillingSupported() method, my ResponseCode is RESULT_DEVELOPER_ERROR. I didn't publish app on market, but i read that it is unnecessary because i use android.test.purchased. 

    <uses-permission android:name="android.permission.INTERNET"/>
        <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
        <uses-permission android:name="android.permission.READ_OWNER_DATA"/>
        <uses-permission android:name="android.permission.WRITE_OWNER_DATA"/>        
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  
        <uses-permission android:name="com.android.vending.BILLING"/>