@Theory
    public void shouldPutAllEntriesFromMap(int size) {
        Map<String, String> putAllMap = new HashMap<>();
        putAllMap.put("a", "x");
        putAllMap.put("b", "y");
        putAllMap.put("c", "z");

        CaseInsensitiveStringMultiMap actual = new CaseInsensitiveStringMultiMap(size);
        actual.putAll(putAllMap);

        Assert.assertEquals(expected(ent("a", "x"), ent("b", "y"), ent("c", "z")),
                toSet(actual.getEntries()));
    }
@author Marc Savy {@literal <msavy@redhat.com>}
gateway/engine/beans/src/test/java/io/apiman/gateway/engine/beans/util/CaseInsensitiveStringMultiMapTest.java