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/*
 * Copyright 2020 Nokia
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.onap.validation.yaml;

import org.junit.jupiter.api.Test;
import org.onap.validation.yaml.error.YamlDocumentValidationError;
import org.onap.validation.yaml.exception.YamlProcessingException;
import org.yaml.snakeyaml.parser.ParserException;

import java.util.List;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.catchThrowable;

class YamlFileValidatorTest {

    @Test
    void shouldReturnCorrectErrorsWhenGivenPathToValidPmDictionaryFile() throws YamlProcessingException {
        //given
        String path = getFullPathForGivenResources(YamlLoadingUtils.PATH_TO_VALID_YAML);

        //when
        List<YamlDocumentValidationError> validationErrors = new YamlFileValidator().validateYamlFileWithSchema(path);

        //then
        assertValidationReturnedExpectedErrors(validationErrors);
    }

    @Test
    void shouldReturnCorrectErrorsWhenGivenPathToValidJsonStylePmDictionaryFile() throws YamlProcessingException {
        //given
        String path = getFullPathForGivenResources(YamlLoadingUtils.PATH_TO_VALID_JSON_STYLE_YAML);

        //when
        List<YamlDocumentValidationError> validationErrors = new YamlFileValidator().validateYamlFileWithSchema(path);

        //then
        assertValidationReturnedExpectedErrors(validationErrors);
    }


    private void assertValidationReturnedExpectedErrors(List<YamlDocumentValidationError> validationErrors) {
        assertThat(validationErrors)
                .isNotNull()
                .hasSize(4)
                .usingRecursiveFieldByFieldElementComparator()
                .containsAll(
                        List.of(
                                new YamlDocumentValidationError(1,
                                        "/pmMetaData/pmFields/measResultType",
                                        "Value(s) is/are not in array of accepted values.\n" +
                                                " value(s):  integer\n" +
                                                "  accepted value(s):  [float, uint32, uint64]"),
                                new YamlDocumentValidationError(1,
                                        "/pmMetaData/pmFields/",
                                        "Key not found: measChangeType"),
                                new YamlDocumentValidationError(2,
                                        "/pmMetaData/pmFields/",
                                        "Key not found: measChangeType"),
                                new YamlDocumentValidationError(3,
                                        "/pmMetaData/pmFields/measAdditionalFields/vendorField1",
                                        "Value(s) is/are not in array of accepted values.\n" +
                                                " value(s):  [Z, A]\n" +
                                                "  accepted value(s):  [X, Y, Z]")
                        )
                );
    }

    @Test
    void shouldThrowErrorWhenGivenPathToInvalidPmDictionaryFile() {
        //given
        String path = getFullPathForGivenResources(YamlLoadingUtils.PATH_TO_MULTI_DOCUMENT_INVALID_YAML);

        //when
        Throwable ex = catchThrowable(() -> new YamlFileValidator().validateYamlFileWithSchema(path));

        //then
        assertThat(ex)
                .isInstanceOf(ParserException.class)
                .hasMessageContaining("expected the node content, but found '<document end>'");
    }

    @Test
    void shouldThrowErrorWhenGivenInvalidPath() {
        //given
        String path = "invalid/path/to/pm_dictionary";

        //when
        Throwable ex = catchThrowable(() -> new YamlFileValidator().validateYamlFileWithSchema(path));

        //then
        assertThat(ex)
                .isInstanceOf(YamlProcessingException.class)
                .hasMessageContaining("PM_Dictionary YAML file is empty");
    }

    private String getFullPathForGivenResources(String pathToValidYaml) {
        return this.getClass().getClassLoader().getResource(pathToValidYaml).getPath();
    }
}