assertNotNull(files); assertEquals(expectedTxtFileCount, files.length); assertTrue(containsFile(files, testFiles[0])); assertTrue(containsFile(files, testFiles[1])); assertTrue(containsFile(files, testFiles[3])); assertTrue(getIndexOf(testFiles[0], files) < getIndexOf(testFiles[1], files)); assertTrue(getIndexOf(testFiles[1], files) < getIndexOf(testFiles[3], files)); assertNotNull(files); assertEquals(expectedTxtFileCount, files.length); assertTrue(containsFile(files, testFiles[0])); assertTrue(containsFile(files, testFiles[1])); assertTrue(containsFile(files, testFiles[3])); assertTrue(getIndexOf(testFiles[0], files) < getIndexOf(testFiles[1], files)); assertTrue(getIndexOf(testFiles[1], files) < getIndexOf(testFiles[3], files));