SystemPropertiesRuleTests.java

/**
 * Powerunit - A JDK1.8 test framework
 * Copyright (C) 2014 Mathieu Boretti.
 *
 * This file is part of Powerunit
 *
 * Powerunit is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Powerunit is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Powerunit. If not, see <http://www.gnu.org/licenses/>.
 */
package ch.powerunit.test.base;

import ch.powerunit.Categories;
import ch.powerunit.Rule;
import ch.powerunit.Test;
import ch.powerunit.TestRule;
import ch.powerunit.TestSuite;
import ch.powerunit.impl.DefaultPowerUnitRunnerImpl;

public class SystemPropertiesRuleTests {
    public static void main(String[] args) {
        DefaultPowerUnitRunnerImpl<SystemPropertiesRuleTest> runner = new DefaultPowerUnitRunnerImpl<>(
                SystemPropertiesRuleTest.class);
        runner.addListener(new BootstrapTestListener<SystemPropertiesRuleTest>());
        runner.run();

    }

    @Categories("base")
    public static class SystemPropertiesRuleTest implements TestSuite {

        @Rule
        public final TestRule chain = before(() -> {
            System.setProperty("testProps.1", "x");
            System.clearProperty("testProps.2");
            System.clearProperty("testProps.3");
        }).around(after(() -> {
            assertThat(System.getProperty("testProps.1")).is("x");
            assertThat(System.getProperty("testProps.2")).isNull();
            assertThat(System.getProperty("testProps.3")).isNull();
        })).around(systemPropertiesRule("testProps.1", "testProps.2"))
                .around(after(() -> {
                    assertThat(System.getProperty("testProps.1")).is("y");
                    assertThat(System.getProperty("testProps.2")).is("z");
                })).around(systemProperty("testProps.3", "t"));

        @Test
        public void changeSystemProperty1() {
            System.setProperty("testProps.1", "y");
            System.setProperty("testProps.2", "z");
            System.setProperty("testProps.3", "t");
        }

        @Test
        public void changeSystemProperty2() {
            System.setProperty("testProps.1", "y");
            System.setProperty("testProps.2", "z");
            System.setProperty("testProps.3", "t");
        }
    }
}