Application: gvSIG desktop

package org.gvsig.expresionevaluator.impl;

import junit.framework.TestCase;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

import org.gvsig.expressionevaluator.ExpressionEvaluatorManager;

import org.gvsig.expressionevaluator.MutableSymbolTable;

import org.gvsig.expressionevaluator.SymbolTable;

import org.gvsig.expressionevaluator.spi.AbstractSymbolTable;

import org.gvsig.tools.library.impl.DefaultLibrariesInitializer;

public class TestSymbolTable extends TestCase {

    public TestSymbolTable(String testName) {

        super(testName);

    }

    @Override

    protected void setUp() throws Exception {

        super.setUp();

        new DefaultLibrariesInitializer().fullInitialize();

    }

    @Override

    protected void tearDown() throws Exception {

        super.tearDown();

    }

    // TODO add test methods here. The name must begin with 'test'. For example:

    // public void testHello() {}

    private MutableSymbolTable createMutableSymbolTable() {

        ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager();

        MutableSymbolTable t = manager.createSymbolTable();

        return  t;

    }

    private SymbolTable createSymbolTable() {

        SymbolTable t = new AbstractSymbolTable() {

        };

        return t;

    }

    public void testGetter() {

        SymbolTable symbolTable = createSymbolTable();

        assertNull(symbolTable.value("number"));

        assertFalse(symbolTable.exists("number"));

        assertNull(symbolTable.function("abs"));

        assertEquals(0, symbolTable.variables().size());

        assertEquals(0, symbolTable.functions().size());

        assertEquals(0, symbolTable.scripts().size());

    }

    public void testGetter2() {

        MutableSymbolTable symbolTable = createMutableSymbolTable();

        assertNull(symbolTable.value("number"));

        assertFalse(symbolTable.exists("number"));

        assertNotNull(symbolTable.function("abs"));

        assertEquals(0, symbolTable.variables().size());

        assertFalse(symbolTable.functions().isEmpty());

        assertEquals(0, symbolTable.scripts().size());

    }

    public void testSetter1() {

        MutableSymbolTable symbolTable = createMutableSymbolTable();

        symbolTable.setVar("number", 10);

        assertEquals(10, symbolTable.value("number"));

        assertTrue(symbolTable.exists("number"));

        assertEquals(1, symbolTable.variables().size());

        assertFalse(symbolTable.functions().isEmpty());

        assertEquals(0, symbolTable.scripts().size());

    }

    public void testDelegated1() {

        MutableSymbolTable symbolTable1 = createMutableSymbolTable();

        MutableSymbolTable symbolTable2 = createMutableSymbolTable();

        symbolTable2.setVar("number", 10);

        symbolTable1.addSymbolTable(symbolTable2);

        assertEquals(10, symbolTable1.value("number"));

        assertTrue(symbolTable1.exists("number"));

        assertNotNull(symbolTable1.function("abs"));

        assertEquals(symbolTable2.functions().size(), symbolTable1.functions().size());

    }

    public void testDelegated2() {

        SymbolTable symbolTable1 = createSymbolTable();

        MutableSymbolTable symbolTable2 = createMutableSymbolTable();

        symbolTable2.setVar("number", 10);

        symbolTable1.addSymbolTable(symbolTable2);

        assertEquals(10, symbolTable1.value("number"));

        assertTrue(symbolTable1.exists("number"));

        assertNotNull(symbolTable1.function("abs"));

        assertEquals(symbolTable2.functions().size(), symbolTable1.functions().size());

    }

}