From 40b916c7a3dfafead454dce8cfc01789aa6bb90e Mon Sep 17 00:00:00 2001
From: David Marteau <david@innophi.com>
Date: Tue, 10 Oct 2017 15:14:02 +0200
Subject: [PATCH] Disable message hook and import override at runtime

---
 .docker/docker-compose.travis.yml                |  3 +++
 .../processing/tests/QgisAlgorithmsTest.py       |  2 +-
 python/utils.py                                  | 16 ++++++++++------
 3 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/.docker/docker-compose.travis.yml b/.docker/docker-compose.travis.yml
index 974a3179837..cd94a0c510a 100644
--- a/.docker/docker-compose.travis.yml
+++ b/.docker/docker-compose.travis.yml
@@ -23,3 +23,6 @@ services:
       - TRAVIS_OS_NAME=${TRAVIS_OS_NAME}
       - TRAVIS_CONFIG=${TRAVIS_CONFIG}
       - TRAVIS=${TRAVIS}
+      - QGIS_DISABLE_MESSAGE_HOOKS=1
+      - QGIS_NO_OVERRIDE_IMPORT=1
+
diff --git a/python/plugins/processing/tests/QgisAlgorithmsTest.py b/python/plugins/processing/tests/QgisAlgorithmsTest.py
index e937288e7b3..0bf04dae084 100644
--- a/python/plugins/processing/tests/QgisAlgorithmsTest.py
+++ b/python/plugins/processing/tests/QgisAlgorithmsTest.py
@@ -50,7 +50,7 @@ class TestAlg(QgsProcessingAlgorithm):
     def displayName(self):
         return 'testalg'
 
-    def initAlgorithm(self):
+    def initAlgorithm(self, config=None):
         pass
 
     def createInstance(self):
diff --git a/python/utils.py b/python/utils.py
index 04bcd0e9331..789e488388c 100644
--- a/python/utils.py
+++ b/python/utils.py
@@ -33,6 +33,7 @@ from qgis.PyQt.QtWidgets import QPushButton, QApplication
 from qgis.core import Qgis, QgsExpression, QgsMessageLog, qgsfunction, QgsMessageOutput, QgsWkbTypes
 from qgis.gui import QgsMessageBar
 
+import os
 import sys
 import traceback
 import glob
@@ -76,7 +77,8 @@ def showWarning(message, category, filename, lineno, file=None, line=None):
     )
 
 
-warnings.showwarning = showWarning
+if not os.environ.get('QGIS_DISABLE_MESSAGE_HOOKS'):
+    warnings.showwarning = showWarning
 
 
 def showException(type, value, tb, msg, messagebar=False):
@@ -204,7 +206,8 @@ def uninstallErrorHook():
 
 
 # install error hook() on module load
-installErrorHook()
+if not os.environ.get('QGIS_DISABLE_MESSAGE_HOOKS'):
+    installErrorHook()
 
 # initialize 'iface' object
 iface = None
@@ -683,7 +686,8 @@ def _import(name, globals={}, locals={}, fromlist=[], level=None):
     return mod
 
 
-if _uses_builtins:
-    builtins.__import__ = _import
-else:
-    __builtin__.__import__ = _import
+if not os.environ.get('QGIS_NO_OVERRIDE_IMPORT'):
+    if _uses_builtins:
+        builtins.__import__ = _import
+    else:
+        __builtin__.__import__ = _import