Re-enable tests failing due to broken XDG_RUNTIME_DIR

But undefine the variable in the Makefile to avoid the problem.

debian/patches/blacklist-failing-tests.patch

 From: Sophie Brun <sophie@freexian.com>
 Date: Fri, 22 Nov 2019 13:24:54 +0100
-Subject: Blacklist other failing tests
+Subject: Blacklist failing tests
 
 Forwarded:
-https://bugreports.qt.io/projects/PYSIDE/issues/PYSIDE-1145?filter=allopenissues
 https://bugreports.qt.io/projects/PYSIDE/issues/PYSIDE-1146?filter=allopenissues
 ---
- build_history/blacklist.txt | 12 ++++++++++++
- 1 file changed, 12 insertions(+)
+ build_history/blacklist.txt | 6 ++++++
+ 1 file changed, 6 insertions(+)
 
 diff --git a/build_history/blacklist.txt b/build_history/blacklist.txt
-index adcf520..496fd19 100644
+index adcf520..710d506 100644
 --- a/build_history/blacklist.txt
 +++ b/build_history/blacklist.txt
-@@ -6,6 +6,9 @@
-     darwin py3
- [pysidetest::utils_test]
-     win32
-+# crash on arm64 Debian build, https://bugreports.qt.io/projects/PYSIDE/issues/PYSIDE-1145
-+[pysidetest::new_inherited_functions_test]
-+    linux
- [signals::signal_signature_test]
-     linux
-     darwin
-@@ -25,6 +28,9 @@
+@@ -25,6 +25,9 @@
      linux
      darwin
      win32
@@ -33,13 +22,10 @@ index adcf520..496fd19 100644
  [QtGui::qmatrix_test]
      win32
  [QtWidgets::bug_576]
-@@ -88,6 +94,12 @@
+@@ -88,6 +91,9 @@
      win32
      linux
      darwin
-+# crash on arm64 Debian build, https://bugreports.qt.io/projects/PYSIDE/issues/PYSIDE-1145
-+[QtWebEngine::web_engine_initialize]
-+    linux
 +# crash on s390x Debian build, https://bugreports.qt.io/projects/PYSIDE/issues/PYSIDE-1146
 +[QtQml::qquickitem_grabToImage]
 +    linux

debian/rules

@@ -23,6 +23,9 @@ export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 # Add CPPFLAGS to CXXFLAGS as CMake ignores CPPFLAGS by default
 CXXFLAGS+=$(CPPFLAGS)
 
+# Work around buildd bug (https://bugs.debian.org/842565)
+undefine XDG_RUNTIME_DIR
+
 %:
 	dh $@ --with python3,sphinxdoc --buildsystem=pybuild