Android device tests
I am trying to write AndroidTestCase for one of my classes that connect to the server and parse the returned JSONObject. When I test the functionality in the UI, the file works fine and the correct information is parsed and displayed. When I enter the url into my browser, I return the correct JSONObject. However, when I try to get the JSONObject via AndroidTestCase and just check that it is not null, I get an IOException when it tries to get the corresponding JSONObject for the url. I have verified that the url used is correct. Here's the stack trace.
java.net.UnknownHostException: api.penncoursereview.com
at java.net.InetAddress.lookupHostByName(InetAddress.java:506)
at java.net.InetAddress.getAllByNameImpl(InetAddress.java:294)
at java.net.InetAddress.getAllByName(InetAddress.java:256)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:69)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:48)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection$Address.connect(HttpConnection.java:322)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:89)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHttpConnection(HttpURLConnectionImpl.java:285)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.makeConnection(HttpURLConnectionImpl.java:267)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.retrieveResponse(HttpURLConnectionImpl.java:1018)
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:512)
at edu.upenn.cis.cis350.backend.Parser.retrieveJSONObject(Parser.java:34)
at edu.upenn.cis.cis350.test.ParserTest.test_retrieveJSONObject(ParserTest.java:22)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:529)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1448)
Any idea why the code works in the simulator but not in the test?
Thanks in advance for your help!
change:
Here is the relevant method:
public JSONObject retrieveJSONObject(String path){
try{
URL url = new URL(path);
Log.w("Parser: retrieveJSONObject", "url=" + url);
URLConnection connection = url.openConnection();
String line;
StringBuilder builder = new StringBuilder();
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
while ((line = reader.readLine()) != null) {
builder.append(line);
}
Log.v("Length",builder.toString());
return new JSONObject(builder.toString());
}
catch(IOException e) {
Log.w("Parser: retrieveJSONObject", "IOException: Bad Url");
e.printStackTrace();
return null;
} catch (JSONException e) {
Log.w("Parser: retrieveJSONObject", "JSONException: mis-formatted JSON");
e.printStackTrace();
return null;
}
}
Line 34 is the line that initializes the BufferedReader.
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I assume you are missing INTERNET permission . Given that your method is defined static
in a class Utils
, the following test works.
public void testRetrieveJSONObjectWithUrl() {
final String url = "http://www.bom.gov.au/fwo/IDV60901/IDV60901.94868.json";
assertNotNull(Utils.retrieveJSONObject(url));
}
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