forked from qt-creator/qt-creator
55c12d022c
When docs aren't easily available, let's have a test for it. Change-Id: Ic9cec669cc93a38e79b68ddec7cfcc5bccae5de5 Reviewed-by: <github-actions-qt-creator@cristianadam.eu> Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include <QtTest/qtestcase.h>
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#include <QtTest>
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#include <utils/expected.h>
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#include <utils/filepath.h>
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using namespace Utils;
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class tst_expected : public QObject
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{
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Q_OBJECT
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private slots:
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void initTestCase() {}
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void tryMonads()
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{
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FilePath p = "idontexists.ne";
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auto result = p.fileContents()
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.and_then([](auto) { return expected_str<QByteArray>{}; })
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.or_else([](auto error) {
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return expected_str<QByteArray>(
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make_unexpected(QString("Error: " + error)));
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})
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.transform_error([](auto error) -> QString {
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return QString(QString("More Info: ") + error);
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});
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QVERIFY(!result);
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}
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void tryCompareVoid()
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{
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tl::expected<void, QString> e1;
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QVERIFY(e1 == e1);
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tl::expected<void, QString> e2 = make_unexpected("error");
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QVERIFY(e1 != e2);
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e1 = make_unexpected(QString("error"));
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QVERIFY(e1 == e2);
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e2 = {};
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QVERIFY(e1 != e2);
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e1 = {};
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QVERIFY(e1 == e2);
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QVERIFY(!(e1 != e2));
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}
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void defaultConstructorHasValue()
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{
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expected_str<QString> e1;
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QVERIFY(e1.has_value());
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QVERIFY(e1->isEmpty());
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expected_str<QString> e2{};
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QVERIFY(e2.has_value());
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QVERIFY(e2->isEmpty());
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}
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};
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QTEST_GUILESS_MAIN(tst_expected)
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#include "tst_expected.moc"
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