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package com.oracle.truffle.js.test.instrumentation;

import org.junit.Test;

import com.oracle.truffle.js.nodes.instrumentation.JSTags.LiteralTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.ReadPropertyTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.UnaryOperationTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.WritePropertyTag;

public class DeleteOperatorTest extends FineGrainedAccessTest {

    @Test
    public void delete() {
        evalAllTags("var a = {x:42}; delete a.x;");
        // var a = {x:42}
        enter(WritePropertyTag.class, (e, p) -> {
            assertAttribute(e, KEY, "a");
            p.input(assertGlobalObjectInput);
            enter(LiteralTag.class, (e1, p1) -> {
                enter(LiteralTag.class).exit(assertReturnValue(42));
                p1.input(42);
            }).exit();
            p.input(assertJSObjectInput);
        }).exit();
        // delete a.x
        enter(UnaryOperationTag.class, (e, p) -> {
            assertAttribute(e, OPERATOR, "delete");
            enter(ReadPropertyTag.class, (e1, p1) -> {
                p1.input(assertGlobalObjectInput);
            }).exit();
            // target
            p.input(assertJSObjectInput);
            enter(LiteralTag.class).exit(assertReturnValue("x"));
            p.input("x");
        }).exit(assertReturnValue(true));
    }

    @Test
    public void deleteGlobal() {
        evalAllTags("a = 'foo'; delete a;");
        // a = 'foo'
        enter(WritePropertyTag.class, (e, p) -> {
            assertAttribute(e, KEY, "a");
            p.input(assertGlobalObjectInput);
            enter(LiteralTag.class).exit(assertReturnValue("foo"));
            p.input("foo");
        }).exit();
        // delete a
        enter(UnaryOperationTag.class, (e, p) -> {
            assertAttribute(e, OPERATOR, "delete");
            p.input(assertGlobalObjectInput);
            enter(LiteralTag.class).exit(assertReturnValue("a"));
            p.input("a");
        }).exit(assertReturnValue(true));
    }

}