@@ -0,0 +1,391 @@
+package io.fotoapparat.util;%0A%0Aimport org.junit.Assert;%0Aimport org.junit.Test;%0A%0Aimport static java.util.Arrays.asList;%0A%0Apublic class StringUtilsTest %7B%0A%0A    @Test%0A    public void testJoin() throws Exception %7B%0A        // Given%0A%0A        // When%0A        String result = StringUtils.join(%22, %22, asList(1, 2, 3, 4, 5));%0A%0A        // Then%0A        Assert.assertEquals(result, %221, 2, 3, 4, 5%22);%0A    %7D%0A%7D%0A

Add test for StringUtils