de.hypoport.ep2.support.configuration.properties.PropertiesLoaderTest.java Source code

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Here is the source code for de.hypoport.ep2.support.configuration.properties.PropertiesLoaderTest.java

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/**
 * Copyright 2012 HYPOPORT AG
 *
 *  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 de.hypoport.ep2.support.configuration.properties;

import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

import static de.hypoport.ep2.support.configuration.properties.PropertiesLoader.PROPERTY_LOCATIONS;
import static org.fest.assertions.Assertions.assertThat;

/**
 * @author Timmo Freudl-Gierke
 */
public class PropertiesLoaderTest {

    @BeforeMethod(alwaysRun = true)
    public void cleanupSystemProperties() {
        PropertiesLoader.initialized = false;
        System.clearProperty(PROPERTY_LOCATIONS);
        System.clearProperty("a");
        System.clearProperty("b");
        System.clearProperty("f");
        System.clearProperty("bleibt");
    }

    @Test
    public void propertyLocations_not_specified() {
        PropertiesLoader.loadPropertiesLocationsIntoSystemProperties();
    }

    @Test
    public void propertyLocations_is_empty() {
        System.setProperty(PROPERTY_LOCATIONS, "");
        PropertiesLoader.loadPropertiesLocationsIntoSystemProperties();
    }

    @Test
    public void specify_property_file_via_system_property() {
        System.setProperty(PROPERTY_LOCATIONS, "classpath:a.properties");
        PropertiesLoader.loadPropertiesLocationsIntoSystemProperties();
        assertThat(System.getProperty("a")).isEqualTo("Anton");
    }

    @Test
    public void several_locations_can_be_loaded__properties_in_the_last_specified_file_will_overrule_properties_from_previous_files() {
        System.setProperty(PROPERTY_LOCATIONS, "classpath:a.properties,classpath:config/b.properties,");

        PropertiesLoader.loadPropertiesLocationsIntoSystemProperties();

        assertThat(System.getProperty("a")).isEqualTo("Anne");
        assertThat(System.getProperty("b")).isEqualTo("berta");
    }

    @Test
    public void unknown_locations_are_handeled_gracefully() {
        Properties properties = PropertiesLoader.loadPropertiesLocations("classpath:config/gibtsNicht.properties");

        assertThat(properties).isNotNull();
        assertThat(properties).hasSize(0);
    }

    @Test
    public void file_sytem_resource_can_be_loaded() throws IOException {
        // given
        File tmpFile = new File(System.getProperty("java.io.tmpdir") + "/test.properties");
        org.apache.commons.io.IOUtils.write("f=Felix", new FileOutputStream(tmpFile));
        System.setProperty(PROPERTY_LOCATIONS, "file:" + tmpFile.getAbsolutePath());

        // when
        PropertiesLoader.loadPropertiesLocationsIntoSystemProperties();

        // then
        assertThat(System.getProperty("f")).isEqualTo("Felix");

        // tear down
        try {
            tmpFile.delete();
        } catch (Exception ignore) {
        }
    }

    @Test
    public void existing_SystemProperties_will_not_be_overwritten() {
        System.setProperty("bleibt", "bestehen");
        System.setProperty(PROPERTY_LOCATIONS, "classpath:a.properties");

        PropertiesLoader.loadPropertiesLocationsIntoSystemProperties();

        assertThat(System.getProperty("bleibt")).isEqualTo("bestehen");
    }

    @Test
    public void property_files_can_reference_more_propertyLocations__they_will_be_loaded_as_well() {
        Properties properties = PropertiesLoader.loadPropertiesLocations("classpath:config/b.properties");

        assertThat(properties.getProperty("c")).isEqualTo("Christoph");
    }

    @Test
    public void templating__properties_can_be_used_inside_other_properties() {
        Properties properties = new Properties();
        properties.put("firstname", "Max");
        properties.put("lastname", "Muetze");
        properties.put("fullname", "${firstname} ${lastname}");

        PropertiesLoader.replacePropertyPlaceHolder(properties);

        assertThat(properties.getProperty("fullname")).isEqualTo("Max Muetze");
    }

    @Test
    public void properties_templating_ignores_unspecified_properties() {
        Properties properties = new Properties();
        properties.put("fullname", "${lastname}");

        PropertiesLoader.replacePropertyPlaceHolder(properties);

        assertThat(properties.getProperty("fullname")).isEqualTo("");
    }

    @Test
    public void properties_templating_ignores_missing_closing_bracket() {
        Properties properties = new Properties();
        properties.put("fullname", "Herr ${name");

        PropertiesLoader.replacePropertyPlaceHolder(properties);

        assertThat(properties.getProperty("fullname")).isEqualTo("Herr name");
    }

    @Test
    public void stripSchema() {
        assertThat(PropertiesLoader.stripSchema("classpath:", "classpath:")).isEqualTo("");
        assertThat(PropertiesLoader.stripSchema("classpath:", "classpath:/")).isEqualTo("/");
    }
}