Introduce QBS_TEST_SOURCE_ROOT environment variable

This patch introduces QBS_TEST_SOURCE_ROOT environment variable that can be used
to customize the source location of test data. Previously, the original testdata
location was compiled into the test binaries. Thus it was impossible to run the
test suites on a different host than the build host.

In order to improve test coverage, we want to build the test suites once (for
instance in a Docker environment) and then run them multiple times in different
environments which might have a different file layout. In that case, the
testdata location must be configurable.

Change-Id: I7673826e6ea6f2e3aa893e657351a84c49a1033e
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

1 files changed, 3 insertions, 4 deletions

diff --git a/tests/auto/language/tst_language.cpp b/tests/auto/language/tst_language.cpp
index cc87fb750..25e549d18 100644
--- a/tests/auto/language/tst_language.cpp
+++ b/tests/auto/language/tst_language.cpp
@@ -79,8 +79,7 @@ using namespace qbs;
 using namespace qbs::Internal;
 
 static QString testDataDir() {
-    return FileInfo::resolvePath(QStringLiteral(SRCDIR),
-                                 QStringLiteral("../../../tests/auto/language/testdata"));
+    return testDataSourceDir(SRCDIR "/testdata");
 }
 static QString testProject(const char *fileName) {
     return testDataDir() + QLatin1Char('/') + QLatin1String(fileName);
@@ -180,7 +179,7 @@ void TestLanguage::initTestCase()
     m_engine = ScriptEngine::create(m_logger, EvalContext::PropertyEvaluation, this);
     loader = new Loader(m_engine, m_logger);
     loader->setSearchPaths(QStringList()
-                           << QStringLiteral(SRCDIR "/../../../share/qbs"));
+                           << (testDataDir() + "/../../../../share/qbs"));
     defaultParameters.setTopLevelProfile(profileName());
     defaultParameters.setConfigurationName("default");
     defaultParameters.expandBuildConfiguration();
@@ -2480,7 +2479,7 @@ void TestLanguage::projectFileLookup_data()
     QTest::addColumn<QString>("projectFileOutput");
     QTest::addColumn<bool>("failureExpected");
 
-    const QString baseDir = QLatin1String(SRCDIR) + "/testdata";
+    const QString baseDir = testDataDir();
     const QString multiProjectsDir = baseDir + "/dirwithmultipleprojects";
     const QString noProjectsDir = baseDir + "/dirwithnoprojects";
     const QString oneProjectDir = baseDir + "/dirwithoneproject";