test/jdk/jdk/jfr/api/recording/settings/TestGetConfigurations.java

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package jdk.jfr.api.recording.settings;

import java.util.List;

import jdk.jfr.Configuration;
import jdk.test.lib.Asserts;

/**
 * @test
 * @summary Verifies that there is the default config and that it has
 *          the expected parameters
 * @key jfr
 * @requires vm.hasJFR
 * @library /test/lib
 * @run main/othervm jdk.jfr.api.recording.settings.TestGetConfigurations
 */
public class TestGetConfigurations {

    private static final String DEFAULT_CONFIG_NAME = "default";
    private static final String DEFAULT_CONFIG_LABEL = "Continuous";
    private static final String DEFAULT_CONFIG_DESCRIPTION = "Low overhead configuration safe for continuous use in production environments, typically less than 1 % overhead.";
    private static final String DEFAULT_CONFIG_PROVIDER = "Oracle";

    private static final String PROFILE_CONFIG_NAME = "profile";
    private static final String PROFILE_CONFIG_LABEL = "Profiling";
    private static final String PROFILE_CONFIG_DESCRIPTION = "Low overhead configuration for profiling, typically around 2 % overhead.";
    private static final String PROFILE_CONFIG_PROVIDER = "Oracle";

    public static void main(String[] args) throws Throwable {
        List<Configuration> predefinedConfigs = Configuration.getConfigurations();
        Asserts.assertNotNull(predefinedConfigs, "List of predefined configs is null");
        Asserts.assertEquals(predefinedConfigs.size(), 2, "Expected exactly two predefined configurations");

        Configuration defaultConfig = findConfigByName(predefinedConfigs, DEFAULT_CONFIG_NAME);
        Asserts.assertNotNull(defaultConfig, "Config '" + DEFAULT_CONFIG_NAME + "' not found");
        Asserts.assertEquals(defaultConfig.getLabel(), DEFAULT_CONFIG_LABEL);
        Asserts.assertEquals(defaultConfig.getDescription(), DEFAULT_CONFIG_DESCRIPTION);
        Asserts.assertEquals(defaultConfig.getProvider(), DEFAULT_CONFIG_PROVIDER);

        Configuration profileConfig = findConfigByName(predefinedConfigs, PROFILE_CONFIG_NAME);
        Asserts.assertNotNull(profileConfig, "Config '" + PROFILE_CONFIG_NAME + "' not found");
        Asserts.assertEquals(profileConfig.getLabel(), PROFILE_CONFIG_LABEL);
        Asserts.assertEquals(profileConfig.getDescription(), PROFILE_CONFIG_DESCRIPTION);
        Asserts.assertEquals(profileConfig.getProvider(), PROFILE_CONFIG_PROVIDER);
    }

    private static Configuration findConfigByName(List<Configuration> configs, String name) {
        for (Configuration config : configs) {
            if (name.equals(config.getName())) {
                return config;
            }
        }
        return null;
    }

}