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Validating Duration String Parsing in Conductor OSS

This test suite validates the DateTimeUtils class’s duration parsing functionality in the Conductor OSS framework. It thoroughly tests the parsing of various time duration formats and validates error handling for invalid inputs.

Test Coverage Overview

The test suite provides comprehensive coverage of duration parsing functionality:
  • Tests valid duration formats including seconds, minutes, hours, and days
  • Validates mixed duration formats (e.g. ‘5h 5m 5s’)
  • Covers case sensitivity handling
  • Tests empty string handling
  • Verifies error handling for invalid formats

Implementation Analysis

The testing approach utilizes JUnit 5’s parameterized testing capabilities:
  • Uses @ParameterizedTest with @MethodSource for valid duration tests
  • Implements @ValueSource for invalid duration scenarios
  • Employs AssertJ assertions for validation
  • Structured test data generation through Stream.of(Arguments)

Technical Details

Testing infrastructure includes:
  • JUnit Jupiter Params for parameterized testing
  • AssertJ for assertions and exception validation
  • Java Stream API for test data generation
  • Duration class from java.time package

Best Practices Demonstrated

The test suite exemplifies several testing best practices:
  • Comprehensive test data coverage with both valid and invalid cases
  • Clear test naming conventions using @ParameterizedTest name attributes
  • Efficient test organization using parameterized tests
  • Proper exception testing with detailed message validation

conductor-oss/conductor

core/src/test/java/com/netflix/conductor/core/utils/DateTimeUtilsTest.java

            
/*
 * Copyright 2024 Conductor Authors.
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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 com.netflix.conductor.core.utils;

import java.time.Duration;
import java.util.stream.Stream;

import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
import org.junit.jupiter.params.provider.ValueSource;

import static com.netflix.conductor.core.utils.DateTimeUtils.parseDuration;

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

public class DateTimeUtilsTest {

    private static Stream<Arguments> validDurations() {
        return Stream.of(
                Arguments.of("", Duration.ofSeconds(0)),
                Arguments.of("5s", Duration.ofSeconds(5)),
                Arguments.of("5secs", Duration.ofSeconds(5)),
                Arguments.of("5seconds", Duration.ofSeconds(5)),
                Arguments.of("5m", Duration.ofMinutes(5)),
                Arguments.of("5mins", Duration.ofMinutes(5)),
                Arguments.of("5minutes", Duration.ofMinutes(5)),
                Arguments.of("5h", Duration.ofHours(5)),
                Arguments.of("5hrs", Duration.ofHours(5)),
                Arguments.of("5hours", Duration.ofHours(5)),
                Arguments.of("5d", Duration.ofDays(5)),
                Arguments.of("5days", Duration.ofDays(5)),
                Arguments.of("5m 5s", Duration.ofSeconds(5 * 60 + 5)),
                Arguments.of("5h 5m 5s", Duration.ofSeconds(5 * 60 * 60 + 5 * 60 + 5)),
                Arguments.of(
                        "5d 5h 5m 5s",
                        Duration.ofSeconds(5 * 24 * 60 * 60 + 5 * 60 * 60 + 5 * 60 + 5)),
                Arguments.of("5S", Duration.ofSeconds(5)),
                Arguments.of("5SECS", Duration.ofSeconds(5)),
                Arguments.of("5SECONDS", Duration.ofSeconds(5)),
                Arguments.of("5M", Duration.ofMinutes(5)),
                Arguments.of("5MINS", Duration.ofMinutes(5)),
                Arguments.of("5MINUTES", Duration.ofMinutes(5)),
                Arguments.of("5H", Duration.ofHours(5)),
                Arguments.of("5HRS", Duration.ofHours(5)),
                Arguments.of("5HOURS", Duration.ofHours(5)),
                Arguments.of("5D", Duration.ofDays(5)),
                Arguments.of("5DAYS", Duration.ofDays(5)),
                Arguments.of("5M 5S", Duration.ofSeconds(5 * 60 + 5)),
                Arguments.of("5H 5M 5S", Duration.ofSeconds(5 * 60 * 60 + 5 * 60 + 5)),
                Arguments.of(
                        "5D 5H 5M 5S",
                        Duration.ofSeconds(5 * 24 * 60 * 60 + 5 * 60 * 60 + 5 * 60 + 5)));
    }

    @ParameterizedTest(name = "[{0}] is valid duration")
    @MethodSource("validDurations")
    public void shouldParseDuration(String input, Duration expectedDuration) {
        assertThat(parseDuration(input)).isEqualTo(expectedDuration);
    }

    @ParameterizedTest(name = "[{0}] is invalid duration")
    @ValueSource(
            strings = {
                "5",
                "s",
                "secs",
                "seconds",
                "m",
                "mins",
                "minutes",
                "h",
                "hours",
                "d",
                "days",
                "5.0s",
                "5.0secs",
                "5.0seconds",
                "5.0m",
                "5.0mins",
                "5.0minutes",
                "5.0h",
                "5.0hrs",
                "5.0hours",
                "5.0d",
                "5.0days",
                "5.0m 5s",
                "5.0h 5m 5s",
                "5.0d 5h 5m 5s",
            })
    public void shouldValidateDuration(String input) {
        assertThatThrownBy(() -> parseDuration(input))
                .isInstanceOf(IllegalArgumentException.class)
                .hasMessage("Not valid duration: " + input);
    }
}