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package com.oracle.truffle.js.test.instrumentation;
import com.oracle.truffle.js.nodes.instrumentation.JSTags;
import org.junit.Test;
public class AsyncFunctionTest extends FineGrainedAccessTest {
@Test
public void asyncFunctionBodyBlock() {
assertSimpleAsyncFunction("(async function foo() { return 42; })();");
}
@Test
public void asyncArrowFunctionBodyBlock() {
assertSimpleAsyncFunction("(async () => { return 42; })();");
}
@Test
public void asyncFunctionWithAwait() {
String src = "(async function foo(v) { if (v < 1) {return await foo(v+1);} else {return 42;} })(0);";
evalWithTags(src, new Class<?>[]{JSTags.ControlFlowRootTag.class, JSTags.ControlFlowBranchTag.class});
// enter foo the first time
enter(JSTags.ControlFlowRootTag.class, (e, i) -> {
// this is the async function
assertAttribute(e, TYPE, JSTags.ControlFlowRootTag.Type.AsyncFunction.name());
// if statement
enter(JSTags.ControlFlowRootTag.class, (e1, i1) -> {
assertAttribute(e1, TYPE, JSTags.ControlFlowRootTag.Type.Conditional.name());
// condition true
enter(JSTags.ControlFlowBranchTag.class, (e2, i2) -> {
assertAttribute(e2, TYPE, JSTags.ControlFlowBranchTag.Type.Condition.name());
i2.input(true);
}).exit();
i1.input(true);
// return statement
enter(JSTags.ControlFlowBranchTag.class, (e4, i4) -> {
assertAttribute(e4, TYPE, JSTags.ControlFlowBranchTag.Type.Return.name());
// await
enter(JSTags.ControlFlowBranchTag.class, (e5, i5) -> {
assertAttribute(e5, TYPE, JSTags.ControlFlowBranchTag.Type.Await.name());
// enter foo again
enter(JSTags.ControlFlowRootTag.class, (e6, i6) -> {
assertAttribute(e, TYPE, JSTags.ControlFlowRootTag.Type.AsyncFunction.name());
// if statement
enter(JSTags.ControlFlowRootTag.class, (e7, i7) -> {
// condition false
enter(JSTags.ControlFlowBranchTag.class, (e8, i8) -> {
i8.input(false);
}).exit();
i7.input(false);
// return 42;
enter(JSTags.ControlFlowBranchTag.class, (e9, i9) -> {
assertAttribute(e4, TYPE, JSTags.ControlFlowBranchTag.Type.Return.name());
i9.input(42);
}).exit();
i7.input(42);
}).exit();
}).exit();
// await got the promise, we can ignore the extra input
i5.input(assertJSPromiseInput);
i5.input(assertJSPromiseInput);
}).exitMaybeControlFlowException();
}).exitMaybeControlFlowException();
}).exitMaybeControlFlowException();
}).exit();
// resumed
enter(JSTags.ControlFlowRootTag.class, (e, i) -> {
assertAttribute(e, TYPE, JSTags.ControlFlowRootTag.Type.Conditional.name());
enter(JSTags.ControlFlowBranchTag.class, (e1, i1) -> {
assertAttribute(e1, TYPE, JSTags.ControlFlowBranchTag.Type.Return.name());
enter(JSTags.ControlFlowBranchTag.class, (e2, i2) -> {
assertAttribute(e2, TYPE, JSTags.ControlFlowBranchTag.Type.Await.name());
i2.input(42);
}).exit();
i1.input(42);
}).exitMaybeControlFlowException();
i.input(42);
}).exitMaybeControlFlowException();
}
private void assertSimpleAsyncFunction(String src) {
evalWithTag(src, JSTags.ControlFlowRootTag.class);
enter(JSTags.ControlFlowRootTag.class, (e, i) -> {
assertAttribute(e, TYPE, JSTags.ControlFlowRootTag.Type.AsyncFunction.name());
}).exit();
}
}