Align startup language with system locale in claims app

Author: Blue-B-code

claimManagement/src/main/java/org/openimis/imisclaims/ImisActivity.java

@@ -21,6 +21,7 @@
 import org.openimis.imisclaims.usecase.Login;
 
 import java.util.ArrayList;
+import java.util.Locale;
 
 public abstract class ImisActivity extends AppCompatActivity {
 
@@ -48,7 +49,9 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         global = (Global) getApplicationContext();
-        global.setLanguage(this, global.getSavedLanguage());
+        String systemLanguage = resolveStartupLanguage();
+        global.setSavedLanguage(systemLanguage);
+        global.setLanguage(this, systemLanguage);
 
         actionBar = getSupportActionBar();
         if (actionBar != null) {
@@ -65,6 +68,15 @@ public void onReceive(Context context, Intent intent) {
         sqlHandler = new SQLHandler(this);
     }
 
+    private String resolveStartupLanguage() {
+        Locale systemLocale = getResources().getConfiguration().locale;
+        String language = systemLocale != null ? systemLocale.getLanguage() : "";
+        if ("fr".equalsIgnoreCase(language)) {
+            return "fr";
+        }
+        return "en";
+    }
+
     @Override
     protected void onDestroy() {
         super.onDestroy();

claimManagement/src/test/java/org/openimis/imisclaims/ImisActivityTest.java

@@ -0,0 +1,39 @@
+package org.openimis.imisclaims;
+import static org.junit.Assert.*;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.Robolectric;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+
+@RunWith(RobolectricTestRunner.class)
+public class ImisActivityTest {
+
+    static class TestActivity extends ImisActivity {}
+
+    private String savedLanguage() {
+        TestActivity activity = Robolectric.buildActivity(TestActivity.class)
+                .create()
+                .get();
+
+        return activity.global.getSavedLanguage();
+    }
+
+    @Test
+    @Config(qualifiers = "fr")
+    public void french_locale_saves_fr() {
+        assertEquals("fr", savedLanguage());
+    }
+
+    @Test
+    @Config(qualifiers = "en")
+    public void english_locale_saves_en() {
+        assertEquals("en", savedLanguage());
+    }
+
+    @Test
+    @Config(qualifiers = "es")
+    public void unsupported_locale_defaults_en() {
+        assertEquals("en", savedLanguage());
+    }
+}