@Test
public void testGetEntitySchemaNames() {

	OASExplorer oasExplorer = new OASExplorer();
	Set<String> entitySchemaNames = oasExplorer.getEntitySchemaNames(
		readObject("openapi.json"));
	Assert.assertThat(entitySchemaNames, Matchers.hasSize(16));
	Assert.assertThat(
		entitySchemaNames,
		Matchers.hasItems(
			"Attachment", "Category", "Option", "OptionCategory",
			"ProductOption", "ProductShippingConfiguration",
			"ProductSubscriptionConfiguration", "Sku", "Specification"));
}