### Question:
RuntimeArguments { public static String[] toPosixArray(Map<String, String> kvMap) { return toPosixArray(kvMap.entrySet()); } private  RuntimeArguments(); static Map<String, String> fromPosixArray(String[] args); static String[] toPosixArray(Map<String, String> kvMap); static String[] toPosixArray(Iterable<Map.Entry<String, String>> iterable); static Map<String, String> extractScope(Scope scope, String name, Map<String, String> arguments); static Map<String, String> extractScope(String scope, String name, Map<String, String> arguments); static Map<String, String> addScope(Scope scope, String name, Map<String, String> arguments); static String addScope(Scope scope, String name, String argument); static String addScope(String scope, String name, String argument); static final Map<String, String> NO_ARGUMENTS; }### Answer:
@Test public void testMaptoString() { Map<String, String> testMap = new LinkedHashMap<>(); testMap.put("key1", "val1"); testMap.put("key2", "val2"); testMap.put("keyOnly", ""); String [] expectedArray = new String[]{"--key1=val1", "--key2=val2", "--keyOnly"}; Assert.assertArrayEquals(expectedArray, RuntimeArguments.toPosixArray(testMap)); Assert.assertArrayEquals(expectedArray, RuntimeArguments.toPosixArray(testMap.entrySet())); }