Start on Robolectric integration test

OpenKeychain/src/test/java/tests/RoboTest.java

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+package tests;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.*;
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.sufficientlysecure.keychain.testsupport.PgpVerifyTestingHelper;
+
+@RunWith(RobolectricTestRunner.class)
+@org.robolectric.annotation.Config(emulateSdk = 18) // Robolectric doesn't yet support 19
+public class RoboTest {
+
+    @Test
+    public void testVerifySuccess() throws Exception {
+
+        String testFileName = "/sample.txt";
+        int expectedSignatureResult = OpenPgpSignatureResult.SIGNATURE_SUCCESS_UNCERTIFIED;
+
+        int status = new PgpVerifyTestingHelper(Robolectric.application).doTestFile(testFileName);
+
+        Assert.assertEquals(expectedSignatureResult, status);
+    }
+
+
+    @Test
+    public void testVerifyFailure() throws Exception {
+
+        String testFileName = "/sample-altered.txt";
+        int expectedSignatureResult = OpenPgpSignatureResult.SIGNATURE_ERROR;
+
+        int status = new PgpVerifyTestingHelper(Robolectric.application).doTestFile(testFileName);
+
+        Assert.assertEquals(expectedSignatureResult, status);
+    }
+
+}

OpenKeychain/src/test/resources/sample-altered.txt

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+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA1
+
+This is a simple text document, which is used to illustrate
+the concept of signing simple text files.  There are no
+control characters or special formatting commands in this
+text, just simple printable ASCII characters.
+MALICIOUS TEXT
+To make this a slightly less uninteresting document, there
+follows a short shopping list.
+
+    eggs, 1 doz
+    milk, 1 gal
+    bacon, 1 lb
+    olive oil
+    bread, 1 loaf
+
+That's all there is to this document.
+
+-----BEGIN PGP SIGNATURE-----
+Version: PGPfreeware 5.5.5 for non-commercial use <http://www.nai.com>
+
+iQA/AwUBN78ib3S9RCOKzj55EQKqDACg1NV2/iyPKrDlOVJvJwz6ArcQ0UQAnjNC
+CDxKAFyaaGa835l1vpbFkAJk
+=3r/N
+-----END PGP SIGNATURE-----

OpenKeychain/src/test/resources/sample.txt

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+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA1
+
+This is a simple text document, which is used to illustrate
+the concept of signing simple text files.  There are no
+control characters or special formatting commands in this
+text, just simple printable ASCII characters.
+
+To make this a slightly less uninteresting document, there
+follows a short shopping list.
+
+    eggs, 1 doz
+    milk, 1 gal
+    bacon, 1 lb
+    olive oil
+    bread, 1 loaf
+
+That's all there is to this document.
+
+-----BEGIN PGP SIGNATURE-----
+Version: PGPfreeware 5.5.5 for non-commercial use <http://www.nai.com>
+
+iQA/AwUBN78ib3S9RCOKzj55EQKqDACg1NV2/iyPKrDlOVJvJwz6ArcQ0UQAnjNC
+CDxKAFyaaGa835l1vpbFkAJk
+=3r/N
+-----END PGP SIGNATURE-----