tests: add a test for Architecture detection

The test binaries are compressed because you cannot make them as small
as possible. Especially macOS enforces the minimum size to be the page
size (16KB).

The README.md has all the details on how to generate and compress test
binaries.

Change-Id: I8636772f2f94ac35e8d4fa51b6b76b0c84ad3d7b
Pick-to: 6.7
Reviewed-by: Bernd Weimer <bernd.weimer@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

11 files changed, 133 insertions, 46 deletions

diff --git a/tests/auto/CMakeLists.txt b/tests/auto/CMakeLists.txt
index f4b5442a..c507b4b5 100644
--- a/tests/auto/CMakeLists.txt
+++ b/tests/auto/CMakeLists.txt
@@ -22,7 +22,7 @@ if (NOT ANDROID)
 endif()
 add_subdirectory(runtime)
 add_subdirectory(signature)
-add_subdirectory(utilities)
+add_subdirectory(architecture)
 add_subdirectory(yaml)
 
 if (LINUX)
diff --git a/tests/auto/architecture/CMakeLists.txt b/tests/auto/architecture/CMakeLists.txt
new file mode 100644
index 00000000..92eea7a6
--- /dev/null
+++ b/tests/auto/architecture/CMakeLists.txt
@@ -0,0 +1,10 @@
+
+qt_internal_add_test(tst_architecture
+    SOURCES
+        ../error-checking.h
+        tst_architecture.cpp
+    DEFINES
+        AM_TESTDATA_DIR="${CMAKE_CURRENT_BINARY_DIR}/../../data/"
+    LIBRARIES
+        Qt::AppManCommonPrivate
+)
diff --git a/tests/auto/architecture/tst_architecture.cpp b/tests/auto/architecture/tst_architecture.cpp
new file mode 100644
index 00000000..db8d4055
--- /dev/null
+++ b/tests/auto/architecture/tst_architecture.cpp
@@ -0,0 +1,69 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QtCore>
+#include <QtTest>
+#include <QtEndian>
+#include <QString>
+
+#include "architecture.h"
+
+QT_USE_NAMESPACE_AM
+using namespace Qt::StringLiterals;
+
+class tst_Architecture : public QObject
+{
+    Q_OBJECT
+
+public:
+    tst_Architecture() = default;
+
+private slots:
+    void initTestCase();
+    void architecture_data();
+    void architecture();
+};
+
+
+void tst_Architecture::initTestCase()
+{
+    if (!QDir(QString::fromLatin1(AM_TESTDATA_DIR "/binaries")).exists())
+        QSKIP("No test binaries available in the data/ directory");
+}
+
+void tst_Architecture::architecture_data()
+{
+    QTest::addColumn<QString>("path");
+    QTest::addColumn<QString>("archId");
+
+    QTest::newRow("android-elf")     << "android-elf.so.zz"  << "android_arm_32";
+    QTest::newRow("windows-pe")      << "windows-pe.exe.zz"  << "windows_x86_64";
+    QTest::newRow("macos-macho")     << "macos-macho.zz"     << "macos_arm_64";
+    QTest::newRow("macos-universal") << "macos-universal.zz" << "macos_universal_arm_64+x86_64";
+}
+
+void tst_Architecture::architecture()
+{
+    QFETCH(QString, path);
+    QFETCH(QString, archId);
+
+    QString fullPath = QString::fromLatin1(AM_TESTDATA_DIR) + u"/binaries/"_s + path;
+    QFile src(fullPath);
+    QVERIFY(src.open(QIODevice::ReadOnly));
+    auto content = src.readAll();
+    quint32 contentLen = content.size();
+    QVERIFY(contentLen > 0);
+    content = qUncompress(content);
+    QVERIFY(content.size() > 0);
+    QTemporaryFile dst;
+    QVERIFY(dst.open());
+    QVERIFY(dst.write(content) == content.size());
+    dst.close();
+    QString id = Architecture::identify(dst.fileName());
+
+    QCOMPARE(id, archId);
+}
+
+QTEST_APPLESS_MAIN(tst_Architecture)
+
+#include "tst_architecture.moc"
diff --git a/tests/auto/utilities/CMakeLists.txt b/tests/auto/utilities/CMakeLists.txt
deleted file mode 100644
index 7e202ebe..00000000
--- a/tests/auto/utilities/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-
-qt_internal_add_test(tst_utilities
-    SOURCES
-        ../error-checking.h
-        tst_utilities.cpp
-    DEFINES
-        AM_TESTDATA_DIR="${CMAKE_CURRENT_BINARY_DIR}/../../data/"
-    LIBRARIES
-        Qt::Network
-        Qt::AppManCommonPrivate
-)
-
-qt_internal_extend_target(tst_utilities CONDITION TARGET Qt::DBus
-    LIBRARIES
-        Qt::DBus
-)
diff --git a/tests/auto/utilities/tst_utilities.cpp b/tests/auto/utilities/tst_utilities.cpp
deleted file mode 100644
index 3c9b05e4..00000000
--- a/tests/auto/utilities/tst_utilities.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright (C) 2021 The Qt Company Ltd.
-// Copyright (C) 2019 Luxoft Sweden AB
-// Copyright (C) 2018 Pelagicore AG
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
-
-#include <QtCore>
-#include <QtTest>
-
-#include "utilities.h"
-
-QT_USE_NAMESPACE_AM
-
-class tst_Utilities : public QObject
-{
-    Q_OBJECT
-
-public:
-    tst_Utilities();
-
-private slots:
-};
-
-
-tst_Utilities::tst_Utilities()
-{ }
-
-QTEST_APPLESS_MAIN(tst_Utilities)
-
-#include "tst_utilities.moc"
diff --git a/tests/data/CMakeLists.txt b/tests/data/CMakeLists.txt
index 31b64799..79f03770 100644
--- a/tests/data/CMakeLists.txt
+++ b/tests/data/CMakeLists.txt
@@ -15,6 +15,7 @@ file(GLOB_RECURSE TEST_DATA_FILES
     info.yaml
     testfile
     utilities.sh
+    binaries/*.zz
 )
 
 add_custom_target(Test-Data-Files SOURCES
diff --git a/tests/data/binaries/README.md b/tests/data/binaries/README.md
new file mode 100644
index 00000000..199c55c7
--- /dev/null
+++ b/tests/data/binaries/README.md
@@ -0,0 +1,52 @@
+## Generation
+
+Here's how to (re)generate the test binaries in this directory:
+
+- `android-elf.so`:
+
+  This is a copy of `Qt/6.7.0/android_armv7/lib/libQt6QuickParticles_armeabi-v7a.so`
+
+- `windows-pe.exe`:
+
+  This is a minimal C program, compiled with cmake + MSVC:
+  - `main.c`:
+    ```
+    int __stdcall WinMainCRTStartup() { return 0; }
+    ```
+
+  - `CMakeLists.txt`:
+    ```
+    cmake_minimum_required(VERSION 3.5)
+    project(windows-pe LANGUAGES C)
+    add_executable(windows-pe WIN32 main.c)
+    set_target_properties(windows-pe PROPERTIES LINK_FLAGS "/NODEFAULTLIB")
+    ```
+
+- `macos-macho` and `macos-macho-universal`:
+
+  This is a minimal C program, compiled on the command line:
+  - `main.c`:
+    ```
+    int main() { return 0; }
+    ```
+
+  - Compile with:
+    ```
+    clang main.c -o macos-macho
+    clang main.c -arch x86_64 -arch arm64 -o macos-macho-universal
+    ```
+
+
+## Compression
+
+The .zz files here are in Qt's `qCompress` format.
+
+- compress `${file}` on the command line:
+  ```
+  $ printf "0: %08x" `stat -c "%s" $file` | xxd -r > $file.zz ; pigz -z <$file >>$file.zz
+  ```
+
+- decompress `${file}.zz` on the command line:
+  ```
+  $ dd if=${file}.zz bs=4 skip=1 | pigz -d >${file}
+  ```
diff --git a/tests/data/binaries/android-elf.so.zz b/tests/data/binaries/android-elf.so.zz
new file mode 100644
index 00000000..a06f8341
--- /dev/null
+++ b/tests/data/binaries/android-elf.so.zz
diff --git a/tests/data/binaries/macos-macho.zz b/tests/data/binaries/macos-macho.zz
new file mode 100644
index 00000000..db91c82a
--- /dev/null
+++ b/tests/data/binaries/macos-macho.zz
diff --git a/tests/data/binaries/macos-universal.zz b/tests/data/binaries/macos-universal.zz
new file mode 100644
index 00000000..b91409f2
--- /dev/null
+++ b/tests/data/binaries/macos-universal.zz
diff --git a/tests/data/binaries/windows-pe.exe.zz b/tests/data/binaries/windows-pe.exe.zz
new file mode 100644
index 00000000..c3fd3454
--- /dev/null
+++ b/tests/data/binaries/windows-pe.exe.zz