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![Leaf Petersen](/assets/img/avatar_default.png)
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
225 lines
5 KiB
Dart
225 lines
5 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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//
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// Dart test program for testing dart:ffi with null values.
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//
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// Separated into a separate file to make NNBD testing easier.
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//
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// VMOptions=
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// VMOptions=--deterministic --optimization-counter-threshold=10
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// VMOptions=--use-slow-path
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// VMOptions=--use-slow-path --stacktrace-every=100
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// VMOptions=--write-protect-code --no-dual-map-code
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// VMOptions=--write-protect-code --no-dual-map-code --use-slow-path
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// VMOptions=--write-protect-code --no-dual-map-code --stacktrace-every=100
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// SharedObjects=ffi_test_functions
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// @dart = 2.9
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import 'dart:ffi';
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import "package:expect/expect.dart";
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import "package:ffi/ffi.dart";
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import 'dylib_utils.dart';
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import 'ffi_test_helpers.dart';
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void main() {
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for (int i = 0; i < 100; i++) {
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testPointerStoreNull();
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testEquality();
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testNullReceivers();
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testNullIndices();
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testNullArguments();
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testNullInt();
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testNullDouble();
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testNullManyArgs();
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testException();
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testNullReturnCallback();
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}
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}
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void testPointerStoreNull() {
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int i = null;
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Pointer<Int8> p = calloc();
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Expect.throws(() => p.value = i);
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calloc.free(p);
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double d = null;
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Pointer<Float> p2 = calloc();
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Expect.throws(() => p2.value = d);
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calloc.free(p2);
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Pointer<Void> x = null;
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Pointer<Pointer<Void>> p3 = calloc();
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Expect.throws(() => p3.value = x);
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calloc.free(p3);
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}
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void testEquality() {
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Pointer<Int8> p = Pointer.fromAddress(12345678);
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Expect.notEquals(p, null);
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Expect.notEquals(null, p);
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}
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/// With extension methods, the receiver position can be null.
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testNullReceivers() {
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Pointer<Int8> p = calloc();
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Pointer<Int8> p4 = null;
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Expect.throws(() => Expect.equals(10, p4.value));
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Expect.throws(() => p4.value = 10);
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Pointer<Pointer<Int8>> p5 = null;
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Expect.throws(() => Expect.equals(10, p5.value));
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Expect.throws(() => p5.value = p);
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Pointer<Foo> p6 = null;
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Expect.throws(() => Expect.equals(10, p6.ref));
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calloc.free(p);
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}
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testNullIndices() {
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Pointer<Int8> p = calloc();
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Expect.throws(() => Expect.equals(10, p[null]));
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Expect.throws(() => p[null] = 10);
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Pointer<Pointer<Int8>> p5 = p.cast();
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Expect.throws(() => Expect.equals(10, p5[null]));
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Expect.throws(() => p5[null] = p);
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Pointer<Foo> p6 = p.cast();
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Expect.throws(() => Expect.equals(10, p6[null]));
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calloc.free(p);
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}
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testNullArguments() {
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Pointer<Int8> p = calloc();
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Expect.throws(() => p.value = null);
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calloc.free(p);
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}
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class Foo extends Struct {
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@Int8()
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int a;
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}
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void testNullInt() {
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Expect.throws(() => sumPlus42(43, null));
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}
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void testNullDouble() {
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Expect.throws(() => times1_337Double(null));
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}
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void testNullManyArgs() {
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Expect.throws(() => sumManyNumbers(1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9, 10.0,
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11, 12.0, 13, 14.0, 15, 16.0, 17, 18.0, null, 20.0));
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}
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typedef NativeBinaryOp = Int32 Function(Int32, Int32);
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typedef BinaryOp = int Function(int, int);
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typedef NativeDoubleUnaryOp = Double Function(Double);
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typedef DoubleUnaryOp = double Function(double);
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DoubleUnaryOp times1_337Double = ffiTestFunctions
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.lookupFunction<NativeDoubleUnaryOp, DoubleUnaryOp>("Times1_337Double");
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typedef NativeVigesimalOp = Double Function(
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IntPtr,
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Float,
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IntPtr,
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Double,
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IntPtr,
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Float,
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IntPtr,
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Double,
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IntPtr,
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Float,
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IntPtr,
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Double,
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IntPtr,
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Float,
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IntPtr,
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Double,
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IntPtr,
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Float,
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IntPtr,
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Double);
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typedef VigesimalOp = double Function(
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int,
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double,
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int,
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double,
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int,
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double,
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int,
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double,
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int,
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double,
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int,
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double,
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int,
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double,
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int,
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double,
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int,
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double,
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int,
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double);
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VigesimalOp sumManyNumbers = ffiTestFunctions
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.lookupFunction<NativeVigesimalOp, VigesimalOp>("SumManyNumbers");
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// Throw an exception from within the trampoline and collect a stacktrace
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// include its frame.
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void testException() {
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try {
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sumPlus42(null, null);
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} catch (e, s) {
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return;
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}
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throw "Didn't throw!";
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}
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BinaryOp sumPlus42 =
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ffiTestFunctions.lookupFunction<NativeBinaryOp, BinaryOp>("SumPlus42");
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void testNullReturnCallback() {
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final test =
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Test("ReturnNull", Pointer.fromFunction<ReturnNullType>(returnNull, 42));
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test.run();
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}
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typedef NativeCallbackTest = Int32 Function(Pointer);
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typedef NativeCallbackTestFn = int Function(Pointer);
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final DynamicLibrary testLibrary = dlopenPlatformSpecific("ffi_test_functions");
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class Test {
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final String name;
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final Pointer callback;
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final bool skip;
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Test(this.name, this.callback, {bool skipIf: false}) : skip = skipIf {}
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void run() {
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if (skip) return;
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final NativeCallbackTestFn tester = testLibrary
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.lookupFunction<NativeCallbackTest, NativeCallbackTestFn>("Test$name");
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final int testCode = tester(callback);
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if (testCode != 0) {
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Expect.fail("Test $name failed.");
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}
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}
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}
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typedef ReturnNullType = Int32 Function();
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int returnNull() {
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return null;
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}
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