diff --git a/swh/indexer/tests/test_fossology_license.py b/swh/indexer/tests/test_fossology_license.py
--- a/swh/indexer/tests/test_fossology_license.py
+++ b/swh/indexer/tests/test_fossology_license.py
@@ -66,21 +66,22 @@
         self.id0 = '01c9379dfc33803963d07c1ccc748d3fe4c96bb5'
         self.id1 = '688a5ef812c53907562fe379d4b3851e69c7cb15'
         self.id2 = 'da39a3ee5e6b4b0d3255bfef95601890afd80709'  # empty content
+        tool_id = self.indexer.tool['id']
         # then
         self.expected_results = {
             self.id0: {
                 'id': self.id0,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'licenses': SHA1_TO_LICENSES[self.id0],
             },
             self.id1: {
                 'id': self.id1,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'licenses': SHA1_TO_LICENSES[self.id1],
             },
             self.id2: {
                 'id': self.id2,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'licenses': SHA1_TO_LICENSES[self.id2],
             }
         }
@@ -134,20 +135,21 @@
         self.id0 = '01c9379dfc33803963d07c1ccc748d3fe4c96bb5'
         self.id1 = '02fb2c89e14f7fab46701478c83779c7beb7b069'
         self.id2 = '103bc087db1d26afc3a0283f38663d081e9b01e6'
+        tool_id = self.indexer.tool['id']
         self.expected_results = {
             self.id0: {
                 'id': self.id0,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'licenses': SHA1_TO_LICENSES[self.id0]
             },
             self.id1: {
                 'id': self.id1,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'licenses': SHA1_TO_LICENSES[self.id1]
             },
             self.id2: {
                 'id': self.id2,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'licenses': SHA1_TO_LICENSES[self.id2]
             }
         }
diff --git a/swh/indexer/tests/test_language.py b/swh/indexer/tests/test_language.py
--- a/swh/indexer/tests/test_language.py
+++ b/swh/indexer/tests/test_language.py
@@ -19,7 +19,6 @@
     """
     def prepare(self):
         self.config = {
-            'destination_task': None,
             'tools':  {
                 'name': 'pygments',
                 'version': '2.0.1+dfsg-1.1+deb8u1',
@@ -33,7 +32,6 @@
         self.idx_storage = BasicMockIndexerStorage()
         self.log = logging.getLogger('swh.indexer')
         self.objstorage = MockObjStorage()
-        self.destination_task = None
         self.tool_config = self.config['tools']['configuration']
         self.max_content_size = self.tool_config['max_content_size']
         self.tools = self.register_tools(self.config['tools'])
@@ -69,21 +67,22 @@
         self.id0 = '02fb2c89e14f7fab46701478c83779c7beb7b069'
         self.id1 = '103bc087db1d26afc3a0283f38663d081e9b01e6'
         self.id2 = 'd4c647f0fc257591cc9ba1722484229780d1c607'
+        tool_id = self.indexer.tool['id']
 
         self.expected_results = {
             self.id0: {
                 'id': self.id0,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'lang': 'python',
             },
             self.id1: {
                 'id': self.id1,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'lang': 'c'
             },
             self.id2: {
                 'id': self.id2,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'lang': 'text-only'
             }
         }
diff --git a/swh/indexer/tests/test_metadata.py b/swh/indexer/tests/test_metadata.py
--- a/swh/indexer/tests/test_metadata.py
+++ b/swh/indexer/tests/test_metadata.py
@@ -23,7 +23,6 @@
         self.idx_storage = MockIndexerStorage()
         self.log = logging.getLogger('swh.indexer')
         self.objstorage = MockObjStorage()
-        self.destination_task = None
         self.tools = self.register_tools(self.config['tools'])
         self.tool = self.tools[0]
         self.results = []
@@ -57,7 +56,6 @@
         self.idx_storage = MockIndexerStorage()
         self.log = logging.getLogger('swh.indexer')
         self.objstorage = MockObjStorage()
-        self.destination_task = None
         self.tools = self.register_tools(self.config['tools'])
         self.tool = self.tools[0]
         self.results = []
@@ -339,7 +337,7 @@
             "contIntegration": "https://travis-ci.org/codemeta/codemeta",
             "developmentStatus": "active",
             "downloadUrl": "https://github.com/codemeta/codemeta/archive/2.0.zip",
-            "funder": { 
+            "funder": {
                 "@id": "https://doi.org/10.13039/100000001",
                 "@type": "Organization",
                 "name": "National Science Foundation"
diff --git a/swh/indexer/tests/test_mimetype.py b/swh/indexer/tests/test_mimetype.py
--- a/swh/indexer/tests/test_mimetype.py
+++ b/swh/indexer/tests/test_mimetype.py
@@ -53,22 +53,23 @@
         self.id0 = '01c9379dfc33803963d07c1ccc748d3fe4c96bb5'
         self.id1 = '688a5ef812c53907562fe379d4b3851e69c7cb15'
         self.id2 = 'da39a3ee5e6b4b0d3255bfef95601890afd80709'
+        tool_id = self.indexer.tool['id']
         self.expected_results = {
             self.id0: {
                 'id': self.id0,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'mimetype': b'text/plain',
                 'encoding': b'us-ascii',
             },
             self.id1: {
                 'id': self.id1,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'mimetype': b'text/plain',
                 'encoding': b'us-ascii',
             },
             self.id2: {
                 'id': self.id2,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'mimetype': b'application/x-empty',
                 'encoding': b'binary',
             }
@@ -124,21 +125,23 @@
         self.id0 = '01c9379dfc33803963d07c1ccc748d3fe4c96bb5'
         self.id1 = '02fb2c89e14f7fab46701478c83779c7beb7b069'
         self.id2 = '103bc087db1d26afc3a0283f38663d081e9b01e6'
+        tool_id = self.indexer.tool['id']
+
         self.expected_results = {
             self.id0: {
                 'encoding': b'us-ascii',
                 'id': self.id0,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'mimetype': b'text/plain'},
             self.id1: {
                 'encoding': b'us-ascii',
                 'id': self.id1,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'mimetype': b'text/x-python'},
             self.id2: {
                 'encoding': b'us-ascii',
                 'id': self.id2,
-                'indexer_configuration_id': 10,
+                'indexer_configuration_id': tool_id,
                 'mimetype': b'text/plain'}
         }
 
diff --git a/swh/indexer/tests/test_origin_metadata.py b/swh/indexer/tests/test_origin_metadata.py
--- a/swh/indexer/tests/test_origin_metadata.py
+++ b/swh/indexer/tests/test_origin_metadata.py
@@ -36,7 +36,6 @@
         self.idx_storage = MockIndexerStorage()
         self.log = logging.getLogger('swh.indexer')
         self.objstorage = MockObjStorage()
-        self.destination_task = None
         self.tools = self.register_tools(self.config['tools'])
         self.tool = self.tools[0]
         self.results = []