Tests: Load: Add test for CYAML_ENUM with fallback.

test/units/load.c

@@ -907,6 +907,66 @@ static bool test_load_mapping_entry_enum_sparse(
 	return ttest_pass(&tc);
 }
 
+/**
+ * Test loading an enumeration with numerical fallback.
+ *
+ * \param[in]  report  The test report context.
+ * \param[in]  config  The CYAML config to use for the test.
+ * \return true if test passes, false otherwise.
+ */
+static bool test_load_mapping_entry_enum_fallback(
+		ttest_report_ctx_t *report,
+		const cyaml_config_t *config)
+{
+	enum test_enum {
+		TEST_ENUM_FIRST  = 3,
+		TEST_ENUM_SECOND = 77,
+		TEST_ENUM_THIRD  = 183,
+		TEST_ENUM_FOURTH = 9900,
+	} value = TEST_ENUM_SECOND;
+	static const cyaml_strval_t strings[] = {
+		{ "first",  TEST_ENUM_FIRST },
+		{ "second", TEST_ENUM_SECOND },
+		{ "third",  TEST_ENUM_THIRD },
+		{ "fourth", TEST_ENUM_FOURTH },
+	};
+	static const unsigned char yaml[] =
+		"test_enum: 77\n";
+	struct target_struct {
+		enum test_enum test_value_enum;
+	} *data_tgt = NULL;
+	static const struct cyaml_schema_field mapping_schema[] = {
+		CYAML_FIELD_ENUM("test_enum", CYAML_FLAG_DEFAULT,
+				struct target_struct, test_value_enum,
+				strings, CYAML_ARRAY_LEN(strings)),
+		CYAML_FIELD_END
+	};
+	static const struct cyaml_schema_value top_schema = {
+		CYAML_VALUE_MAPPING(CYAML_FLAG_POINTER,
+				struct target_struct, mapping_schema),
+	};
+	test_data_t td = {
+		.data = (cyaml_data_t **) &data_tgt,
+		.config = config,
+		.schema = &top_schema,
+	};
+	cyaml_err_t err;
+
+	ttest_ctx_t tc = ttest_start(report, __func__, cyaml_cleanup, &td);
+
+	err = cyaml_load_data(yaml, YAML_LEN(yaml), config, &top_schema,
+			(cyaml_data_t **) &data_tgt, NULL);
+	if (err != CYAML_OK) {
+		return ttest_fail(&tc, cyaml_strerror(err));
+	}
+
+	if (data_tgt->test_value_enum != value) {
+		return ttest_fail(&tc, "Incorrect value");
+	}
+
+	return ttest_pass(&tc);
+}
+
 /**
  * Test loading a string to a character array.
  *
@@ -6619,6 +6679,7 @@ bool load_tests(
 	pass &= test_load_mapping_entry_enum_sparse(rc, &config);
 	pass &= test_load_mapping_entry_ignore_deep(rc, &config);
 	pass &= test_load_mapping_entry_ignore_scalar(rc, &config);
+	pass &= test_load_mapping_entry_enum_fallback(rc, &config);
 	pass &= test_load_mapping_entry_bool_true_ptr(rc, &config);
 	pass &= test_load_mapping_entry_bool_false_ptr(rc, &config);
 	pass &= test_load_mapping_entry_string_ptr_empty(rc, &config);