class SystemPropertiesTest extends Specification {
    def "can be queried for standard system properties"() {
        expect:
        SystemProperties.instance.isStandardProperty("os.name")
        !SystemProperties.instance.isStandardProperty("foo.bar")
    }

        File originalProcessDir = FileUtils.canonicalize(new File("."));

        for (Map.Entry<String, String> entry : build.getParameters().getSystemProperties().entrySet()) {
            if (SystemProperties.getInstance().isStandardProperty(entry.getKey())) {
                continue;
            }
            if (SystemProperties.getInstance().isNonStandardImportantProperty(entry.getKey())) {
                continue;
            }

    }

    /**
     * Returns true if the given key is guaranteed to be contained in System.getProperties() by default,
     * as specified in the Javadoc for that method.
     */
    public boolean isStandardProperty(String key) {
        return STANDARD_PROPERTIES.contains(key);
    }

    /**
     * Returns true if the key is an important property that is not guaranteed to be contained in System.getProperties().