tests: added unit tests for the ConnectivityUtils util class.

The isOnlineWithWifi() method is fully covered by these tests.

Signed-off-by: ardevd <edvard.holst@gmail.com>

src/test/java/com/owncloud/android/utils/ConnectivityUtilsTest.java

@@ -0,0 +1,65 @@
+package com.owncloud.android.utils;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import static org.junit.Assert.*;
+import static org.mockito.ArgumentMatchers.contains;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class ConnectivityUtilsTest {
+
+    @Mock
+    private Context mContext;
+
+    @Mock
+    private ConnectivityManager mConnectivityManager;
+
+    @Mock
+    private NetworkInfo mNetworkInfo;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        when(mContext.getSystemService(Context.CONNECTIVITY_SERVICE)).thenReturn(mConnectivityManager);
+        when(mConnectivityManager.getActiveNetworkInfo()).thenReturn(mNetworkInfo);
+    }
+    
+
+    @Test
+    public void isOnlineWithWifi_assertTrueWhenOnWifi() {
+        when(mNetworkInfo.isConnectedOrConnecting()).thenReturn(true);
+        when(mNetworkInfo.getType()).thenReturn(ConnectivityManager.TYPE_WIFI);
+
+        assertTrue("Falsely indicated connection not on WiFi", ConnectivityUtils.isOnlineWithWifi(mContext));
+    }
+
+    @Test
+    public void isOnlineWithWifi_assertTrueWhenOnVPNWithAdditionalWiFiConnection() {
+        when(mNetworkInfo.isConnectedOrConnecting()).thenReturn(true);
+        when(mNetworkInfo.getType()).thenReturn(ConnectivityManager.TYPE_VPN);
+        NetworkInfo[] networkInfoList = new NetworkInfo[1];
+        NetworkInfo wifiNetworkInfo = mock(NetworkInfo.class);
+        when(wifiNetworkInfo.isConnectedOrConnecting()).thenReturn(true);
+        when(wifiNetworkInfo.getType()).thenReturn(ConnectivityManager.TYPE_WIFI);
+        networkInfoList[0] = wifiNetworkInfo;
+        when(mConnectivityManager.getAllNetworkInfo()).thenReturn(networkInfoList);
+
+        assertTrue("Falsely indicated connection not on WiFi", ConnectivityUtils.isOnlineWithWifi(mContext));
+    }
+
+    @Test
+    public void isOnlineWithWifi_assertFalseWhenNotOnWifi() {
+        when(mNetworkInfo.isConnectedOrConnecting()).thenReturn(true);
+        when(mNetworkInfo.getType()).thenReturn(ConnectivityManager.TYPE_MOBILE);
+
+        assertFalse("Falsely indicated connection on WiFi", ConnectivityUtils.isOnlineWithWifi(mContext));
+    }
+}