added translator test

src/me/teridax/jcash/lang/TranslatorTest.java

@@ -0,0 +1,41 @@
+package me.teridax.jcash.lang;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+import static junit.framework.TestCase.assertEquals;
+import static junit.framework.TestCase.assertTrue;
+
+public class TranslatorTest {
+
+    @Test
+    public void testLoading() {
+        // test if all locales are read
+        assertTrue(Arrays.deepEquals(Translator.availableLocales(), new String[]{"en_EN", "de_DE", "es_ES", "fr_FR", "zh_Hans"}));
+    }
+
+    @Test
+    public void testTranslationBasic() {
+        // test if basic translation works
+        Translator.setTranslationLocale("de_DE");
+        assertEquals(Translator.translate("Overdraft"), "Überziehungsbetrag");
+        assertEquals(Translator.translate("Load database"), "Datenbank auswählen");
+        assertEquals(Translator.translate("currency must not be blank"), "Betrag darf nicht leer sein");
+        assertEquals(Translator.translate("Deposit money"), "Geld einzahlen");
+
+        Translator.setTranslationLocale("es_ES");
+        assertEquals(Translator.translate("Account"), "Cuenta");
+        assertEquals(Translator.translate("Faulty login attempt"), "Solicitud de autenticación no válida");
+        assertEquals(Translator.translate("Transfer money"), "Transferencia de dinero");
+
+        // test if translation with no available translation works as expected
+        assertEquals(Translator.translate("Guppi guppi guppi"), "Guppi guppi guppi");
+    }
+
+    @Test
+    public void testInvalidLocales() {
+        // test if app crashes when invalid locale is loaded
+        Translator.setTranslationLocale("ar_TD");
+    }
+}