Add performance test case

This requires the user to manually copy the large test file into the
dives directory (because I really don't want to add this to the repo);
instructions how to do that are displayed if the file is missing.

Next it uses the git version of that same file (but prefetches it to
try and remove the network speed from what is being measured).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

3 files changed, 104 insertions, 0 deletions

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 4d59536bd..252d0d3d8 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -92,6 +92,7 @@ TEST(TestUnitConversion testunitconversion.cpp)
 TEST(TestProfile testprofile.cpp)
 TEST(TestGpsCoords testgpscoords.cpp)
 TEST(TestParse testparse.cpp)
+TEST(TestParsePerformance testparseperformance.cpp)
 TEST(TestPlan testplan.cpp)
 TEST(TestDiveSiteDuplication testdivesiteduplication.cpp)
 TEST(TestRenumber testrenumber.cpp)
diff --git a/tests/testparseperformance.cpp b/tests/testparseperformance.cpp
new file mode 100644
index 000000000..c31304f42
--- /dev/null
+++ b/tests/testparseperformance.cpp
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "testparseperformance.h"
+#include "core/dive.h"
+#include "core/divelist.h"
+#include "core/git-access.h"
+#include "core/settings/qPref.h"
+#include <QFile>
+#include <QDebug>
+#include <QNetworkProxy>
+
+#define LARGE_TEST_REPO "https://github.com/Subsurface-divelog/large-anonymous-sample-data"
+
+void TestParsePerformance::initTestCase()
+{
+	/* we need to manually tell that the resource exists, because we are using it as library. */
+	Q_INIT_RESOURCE(subsurface);
+
+	// Set UTF8 text codec as in real applications
+	QTextCodec::setCodecForLocale(QTextCodec::codecForMib(106));
+
+	// first, setup the preferences an proxy information
+	copy_prefs(&default_prefs, &prefs);
+	QCoreApplication::setOrganizationName("Subsurface");
+	QCoreApplication::setOrganizationDomain("subsurface.hohndel.org");
+	QCoreApplication::setApplicationName("Subsurface");
+	qPrefProxy::load();
+	qPrefCloudStorage::load();
+
+	QNetworkProxy proxy;
+	proxy.setType(QNetworkProxy::ProxyType(prefs.proxy_type));
+	proxy.setHostName(prefs.proxy_host);
+	proxy.setPort(prefs.proxy_port);
+	if (prefs.proxy_auth) {
+		proxy.setUser(prefs.proxy_user);
+		proxy.setPassword(prefs.proxy_pass);
+	}
+	QNetworkProxy::setApplicationProxy(proxy);
+
+	// now cleanup the cache dir in case there's something weird from previous runs
+	QString localCacheDir(get_local_dir(LARGE_TEST_REPO, "git"));
+	QDir localCacheDirectory(localCacheDir);
+	QCOMPARE(localCacheDirectory.removeRecursively(), true);
+
+}
+
+void TestParsePerformance::init()
+{
+}
+
+void TestParsePerformance::cleanup()
+{
+	clear_dive_file_data();
+}
+
+void TestParsePerformance::parseSsrf()
+{
+	// parsing of a V2 file should work
+	QFile largeSsrfFile(SUBSURFACE_TEST_DATA "/dives/large-anon.ssrf");
+	if (!largeSsrfFile.exists()) {
+		qDebug() << "missing large sample data file - available at " LARGE_TEST_REPO;
+		qDebug() << "clone the repo, uncompress the file and copy it to " SUBSURFACE_TEST_DATA "/dives/large-anon.ssrf";
+		return;
+	}
+	QBENCHMARK {
+		parse_file(SUBSURFACE_TEST_DATA "/dives/large-anon.ssrf", &dive_table);
+	}
+}
+
+void TestParsePerformance::parseGit()
+{
+	// some more necessary setup
+	git_libgit2_init();
+
+	// first parse this once to populate the local cache - this way network
+	// effects don't dominate the parse time
+	parse_file(LARGE_TEST_REPO "[git]", &dive_table);
+
+	cleanup();
+
+	QBENCHMARK {
+		parse_file(LARGE_TEST_REPO "[git]", &dive_table);
+	}
+}
+
+QTEST_GUILESS_MAIN(TestParsePerformance)
diff --git a/tests/testparseperformance.h b/tests/testparseperformance.h
new file mode 100644
index 000000000..f1c0a9e43
--- /dev/null
+++ b/tests/testparseperformance.h
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef TESTPARSEPERFORMANCE_H
+#define TESTPARSEPERFORMANCE_H
+
+#include <QtTest>
+
+class TestParsePerformance : public QObject {
+	Q_OBJECT
+private slots:
+	void initTestCase();
+	void init();
+	void cleanup();
+
+	void parseSsrf();
+	void parseGit();
+};
+
+#endif