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DefaultScopedConfigTest.java
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DefaultScopedConfigTest.java
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/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.internal.utils.config;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.mutabilitydetector.unittesting.AllowedReason.provided;
import static org.mutabilitydetector.unittesting.MutabilityAssert.assertInstancesOf;
import static org.mutabilitydetector.unittesting.MutabilityMatchers.areImmutable;
import java.util.Collections;
import org.assertj.core.api.JUnitSoftAssertions;
import org.junit.BeforeClass;
import org.junit.Rule;
import org.junit.Test;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigException;
import com.typesafe.config.ConfigFactory;
import nl.jqno.equalsverifier.EqualsVerifier;
/**
* Unit test for {@link DefaultScopedConfig}.
*/
public final class DefaultScopedConfigTest {
private static final String KNOWN_CONFIG_PATH = "nowhere";
private static Config testConfig;
@Rule
public final JUnitSoftAssertions softly = new JUnitSoftAssertions();
@BeforeClass
public static void initTestFixture() {
testConfig = ConfigFactory.load("test.conf");
}
@Test
public void assertImmutability() {
assertInstancesOf(DefaultScopedConfig.class,
areImmutable(),
provided(Config.class).isAlsoImmutable());
}
@Test
public void testHashCodeAndEquals() {
EqualsVerifier.forClass(DefaultScopedConfig.class)
.usingGetClass()
.verify();
}
@Test
public void tryToCreateInstanceWithNullOriginalConfig() {
assertThatExceptionOfType(DittoConfigError.class)
.isThrownBy(() -> DefaultScopedConfig.newInstance((Config) null, KNOWN_CONFIG_PATH))
.withCause(new NullPointerException("The original Config must not be null!"));
}
@Test
public void tryToCreateInstanceWithNullConfigPath() {
assertThatExceptionOfType(DittoConfigError.class)
.isThrownBy(() -> DefaultScopedConfig.newInstance(ConfigFactory.empty(), null))
.withCause(new NullPointerException("The config path must not be null!"));
}
@Test
public void tryToGetInstanceWithMissingConfigAtConfigPath() {
final Config config = ConfigFactory.parseMap(Collections.singletonMap("foo", "bar"));
assertThatExceptionOfType(DittoConfigError.class)
.isThrownBy(() -> DefaultScopedConfig.newInstance(config, KNOWN_CONFIG_PATH))
.withMessage("Failed to get nested Config at <%s>!", KNOWN_CONFIG_PATH)
.withCauseInstanceOf(ConfigException.Missing.class);
}
@Test
public void tryToGetInstanceWithConfigWithWrongTypeAtConfigPath() {
final Config config = ConfigFactory.parseMap(Collections.singletonMap(KNOWN_CONFIG_PATH, "bar"));
assertThatExceptionOfType(DittoConfigError.class)
.isThrownBy(() -> DefaultScopedConfig.newInstance(config, KNOWN_CONFIG_PATH))
.withMessage("Failed to get nested Config at <%s>!", KNOWN_CONFIG_PATH)
.withCauseInstanceOf(ConfigException.WrongType.class);
}
@Test
public void getConfigPathReturnsRelativePathIfDefaultScopedConfigIsBuiltFromPlainConfig() {
final DefaultScopedConfig underTest = DefaultScopedConfig.dittoScoped(testConfig);
softly.assertThat(underTest.getConfigPath()).isEqualTo("ditto");
}
@Test
public void getConfigPathReturnsAbsolutePathIfDefaultScopedConfigIsBuiltFromScopedConfig() {
final Config dittoScopedConfig = DefaultScopedConfig.dittoScoped(testConfig);
final DefaultScopedConfig underTest = DefaultScopedConfig.newInstance(dittoScopedConfig, "gateway");
softly.assertThat(underTest.getConfigPath()).isEqualTo("ditto.gateway");
}
@Test
public void tryToGetMissingValue() {
final DefaultScopedConfig underTest = DefaultScopedConfig.empty("ditto");
assertThatExceptionOfType(DittoConfigError.class)
.isThrownBy(() -> underTest.getInt(KNOWN_CONFIG_PATH))
.withMessage("Failed to get int value for path <%s>!", "ditto." + KNOWN_CONFIG_PATH)
.withCauseInstanceOf(ConfigException.Missing.class);
}
@Test
public void getIntValueAlthoughConfigContainsString() {
final String parentPath = "ditto";
final String valuePath = "intValueAsString";
final int intValue = 23;
final Config config = ConfigFactory.parseMap(
Collections.singletonMap(parentPath + "." + valuePath, String.valueOf(intValue)));
final DefaultScopedConfig underTest = DefaultScopedConfig.newInstance(config, parentPath);
softly.assertThat(underTest.getInt(valuePath)).as(valuePath).isEqualTo(intValue);
}
}