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package com.sun.codemodel;

import java.io.CharArrayWriter;
import java.io.PrintWriter;
import org.junit.After;
import org.junit.Before;

/**
 * Common Java module directive testing code.
 * @author Tomas Kraus
 */
public abstract class JTestModuleDirective {

    /** Character array writer used to verify code generation output. */
    protected CharArrayWriter out;

    /** Java formatter used to generate code output. */
    protected JFormatter jf;

    /**
     * Initialize test.
     */
    @Before
    public void setUp() {
        openOutput();
    }

    /**
     * Cleanup test.
     */
    @After
    public void tearDown() {
        closeOutput();
    }

    /**
     * Open Java formatting output for this test.
     */
    protected void openOutput() {
        out = new CharArrayWriter();
        jf = new JFormatter(new PrintWriter(out));
    }

    /**
     * Close Java formatting output for this test.
     */
    protected void closeOutput() {
        jf.close();
        out.close();
    }

    /**
     * Reopen Java formatting output for this test.
     * Used to reset output content during tests.
     */
    protected void reopenOutput() {
        closeOutput();
        openOutput();
    }

}