[test][offline] Add unit test for MirroredIndex.buildOffline()

Author: Clément Le Provost

algoliasearch/src/testOffline/java/com/algolia/search/saas/MirroredIndexTest.java

@@ -31,7 +31,9 @@
 import org.json.JSONException;
 import org.json.JSONObject;
 import org.junit.Test;
+import org.robolectric.RuntimeEnvironment;
 
+import java.io.File;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
@@ -43,6 +45,7 @@
 import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 
@@ -314,6 +317,60 @@ public void doRequestCompleted(JSONObject content, AlgoliaException error) {
         });
     }
 
+    @Test
+    public void testBuildOffline() {
+        final CountDownLatch signal = new CountDownLatch(4);
+
+        // Retrieve data files from resources.
+        File resourcesDir = new File(RuntimeEnvironment.application.getPackageResourcePath() + "/src/testOffline/res");
+        File rawDir = new File(resourcesDir, "raw");
+        File settingsFile = new File(rawDir, "settings.json");
+        File objectFile = new File(rawDir, "objects.json");
+
+        // Create the index.
+        final MirroredIndex index = client.getIndex(Helpers.safeIndexName(Helpers.getMethodName()));
+        index.setMirrored(true);
+
+        // Check that no offline data exists.
+        assertFalse(index.hasOfflineData());
+
+        // Build the index.
+        index.addBuildListener(new BuildListener() {
+            @Override
+            public void buildDidStart(@NonNull MirroredIndex index) {
+                signal.countDown();
+            }
+
+            @Override
+            public void buildDidFinish(@NonNull MirroredIndex index, @Nullable Throwable error) {
+                assertNull(error);
+                signal.countDown();
+            }
+        });
+        index.buildOfflineFromFiles(settingsFile, new File[]{ objectFile }, new AssertCompletionHandler() {
+            @Override
+            public void doRequestCompleted(JSONObject content, AlgoliaException error) {
+                assertNull(error);
+
+                // Check that offline data exists now.
+                assertTrue(index.hasOfflineData());
+
+                // Search.
+                Query query = new Query().setQuery("peanuts").setFilters("kind:animal");
+                index.searchOfflineAsync(query, new AssertCompletionHandler() {
+                    @Override
+                    public void doRequestCompleted(JSONObject content, AlgoliaException error) {
+                        assertNull(error);
+                        assertEquals(2, content.optInt("nbHits"));
+                        signal.countDown();
+                    }
+                });
+                signal.countDown();
+            }
+        });
+    }
+
+
     @Test
     public void testGetObject() {
         final CountDownLatch signal = new CountDownLatch(4);

algoliasearch/src/testOffline/res/raw/objects.json

@@ -0,0 +1,37 @@
+[
+    {
+        "objectID": "1",
+        "name": "Snoopy",
+        "kind": [ "dog", "animal" ],
+        "born": 1967,
+        "series": "Peanuts"
+    },
+    {
+        "objectID": "2",
+        "name": "Woodstock",
+        "kind": ["bird", "animal" ],
+        "born": 1970,
+        "series": "Peanuts"
+    },
+    {
+        "objectID": "3",
+        "name": "Charlie Brown",
+        "kind": [ "human" ],
+        "born": 1950,
+        "series": "Peanuts"
+    },
+    {
+        "objectID": "4",
+        "name": "Hobbes",
+        "kind": [ "tiger", "animal", "teddy" ],
+        "born": 1985,
+        "series": "Calvin & Hobbes"
+    },
+    {
+        "objectID": "5",
+        "name": "Calvin",
+        "kind": [ "human" ],
+        "born": 1985,
+        "series": "Calvin & Hobbes"
+    }
+]

algoliasearch/src/testOffline/res/raw/settings.json

@@ -0,0 +1,10 @@
+{
+    "attributesToIndex": [
+        "name",
+        "kind",
+        "series"
+    ],
+    "attributesForFaceting": [
+        "kind"
+    ]
+}