ForExprStatementTest.java

package org.dynjs.runtime;

import static org.fest.assertions.Assertions.*;

import org.junit.Test;

public class ForExprStatementTest extends AbstractDynJSTestSupport {

    @Test
    public void testBasicLoop() {
        eval("var y=0;",
                "var i;",
                "for ( i = 0 ; i < 10; ++i ) {",
                "  y = i;",
                "}");

        Object i = getContext().resolve("i").getValue(getContext());
        assertThat(i).isEqualTo(10L);

        Object y = getContext().resolve("y").getValue(getContext());
        assertThat(y).isEqualTo(9L);
    }

    @Test
    public void testWithoutInitializer() {
        eval("var y=0;",
                "var i=0;",
                "for ( ; i < 10; ++i ) {",
                "  y = i;",
                "}");

        Object i = getContext().resolve("i").getValue(getContext());
        assertThat(i).isEqualTo(10L);

        Object y = getContext().resolve("y").getValue(getContext());
        assertThat(y).isEqualTo(9L);
    }

    @Test
    public void testLoopWithContinue() {
        eval("var y=0;",
                "var i;",
                "for ( i = 0; i < 10; ++i ) {",
                "  if (i == 3) {",
                "    continue;",
                "  }",
                "  y++;",
                "}");

        Object i = getContext().resolve("i").getValue(getContext());
        assertThat(i).isEqualTo(10L);

        Object y = getContext().resolve("y").getValue(getContext());
        assertThat(y).isEqualTo(9L);
    }
}