Added drone runner configtest_drone

Fixed some test deprecations

15 files changed, 97 insertions, 36 deletions

diff --git a/.drone.yml b/.drone.yml
new file mode 100644
index 00000000..bbaf37ee
--- /dev/null
+++ b/.drone.yml
@@ -0,0 +1,60 @@
+---
+kind: pipeline
+name: python-3-6
+type: docker
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: test
+  image: python:3.6
+  commands:
+  - pip install -U setuptools pip
+  - bash .travis.fuseki_install_optional.sh
+  - pip install --default-timeout 60 -r requirements.txt
+  - pip install --default-timeout 60 -r requirements.dev.txt
+  - pip install --default-timeout 60 coverage coveralls nose-timer && export HAS_COVERALLS=1
+  - python setup.py install
+  - flake8 --exit-zero rdflib
+  - PYTHONWARNINGS=default nosetests --with-timer --timer-top-n 42 --with-coverage --cover-tests --cover-package=rdflib
+
+---
+kind: pipeline
+name: python-3-7
+type: docker
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: test
+  image: python:3.7
+  commands:
+  - bash .travis.fuseki_install_optional.sh
+  - pip install --default-timeout 60 -r requirements.txt
+  - pip install --default-timeout 60 -r requirements.dev.txt
+  - pip install --default-timeout 60 coverage coveralls nose-timer && export HAS_COVERALLS=1
+  - python setup.py install
+  - flake8 --exit-zero rdflib
+  - PYTHONWARNINGS=default nosetests --with-timer --timer-top-n 42 --with-coverage --cover-tests --cover-package=rdflib
+
+---
+kind: pipeline
+name: python-3-8
+type: docker
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: test
+  image: python:3.8
+  commands:
+  - bash .travis.fuseki_install_optional.sh
+  - pip install --default-timeout 60 -r requirements.txt
+  - pip install --default-timeout 60 -r requirements.dev.txt
+  - pip install --default-timeout 60 coverage coveralls nose-timer && export HAS_COVERALLS=1
+  - python setup.py install
+  - flake8 --exit-zero rdflib
+  - PYTHONWARNINGS=default nosetests --with-timer --timer-top-n 42 --with-coverage --cover-tests --cover-package=rdflib
diff --git a/.gitignore b/.gitignore
index a88c4920..485a324e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,8 @@ build/
 /docs/draft/
 *~
 test_reports/*latest.ttl
+.venv/
+venv/
 # PyCharm
 .idea/
 prepare_changelog.sh
diff --git a/rdflib/__init__.py b/rdflib/__init__.py
index b6949f5f..4ad4965d 100644
--- a/rdflib/__init__.py
+++ b/rdflib/__init__.py
@@ -23,7 +23,7 @@ A tiny example:
     ...     if (s, p, o) not in g:
     ...         raise Exception("It better be!")
 
-    >>> s = g.serialize(format='nt')
+    >>> s = g.serialize(format='nt', encoding='ascii')
     >>>
     >>> sorted(g) == [
     ...  (URIRef(u'http://meetings.example.com/cal#m1'),
diff --git a/rdflib/compare.py b/rdflib/compare.py
index ed4415f2..146bee09 100644
--- a/rdflib/compare.py
+++ b/rdflib/compare.py
@@ -42,7 +42,7 @@ Diff the two graphs::
 Present in both::
 
     >>> def dump_nt_sorted(g):
-    ...     for l in sorted(g.serialize(format='nt').splitlines()):
+    ...     for l in sorted(g.serialize(format='nt', encoding='ascii').splitlines()):
     ...         if l: print(l.decode('ascii'))
 
     >>> dump_nt_sorted(in_both) #doctest: +SKIP
diff --git a/rdflib/plugin.py b/rdflib/plugin.py
index e1d47628..2af7370f 100644
--- a/rdflib/plugin.py
+++ b/rdflib/plugin.py
@@ -128,7 +128,6 @@ def plugins(name=None, kind=None):
             yield p
 
 
-# Register Store Plugins
 register("default", Store, "rdflib.plugins.stores.memory", "Memory")
 register("Memory", Store, "rdflib.plugins.stores.memory", "Memory")
 register("SimpleMemory", Store, "rdflib.plugins.stores.memory", "SimpleMemory")
@@ -140,7 +139,6 @@ register(
     "SPARQLUpdateStore", Store, "rdflib.plugins.stores.sparqlstore", "SPARQLUpdateStore"
 )
 
-# Register Triple Serializers
 register(
     "application/rdf+xml",
     Serializer,
@@ -148,9 +146,6 @@ register(
     "XMLSerializer",
 )
 register("xml", Serializer, "rdflib.plugins.serializers.rdfxml", "XMLSerializer")
-register(
-    "pretty-xml", Serializer, "rdflib.plugins.serializers.rdfxml", "PrettyXMLSerializer"
-)
 register("text/n3", Serializer, "rdflib.plugins.serializers.n3", "N3Serializer")
 register("n3", Serializer, "rdflib.plugins.serializers.n3", "N3Serializer")
 register(
@@ -158,6 +153,7 @@ register(
 )
 register("turtle", Serializer, "rdflib.plugins.serializers.turtle", "TurtleSerializer")
 register("ttl", Serializer, "rdflib.plugins.serializers.turtle", "TurtleSerializer")
+register("trig", Serializer, "rdflib.plugins.serializers.trig", "TrigSerializer")
 register(
     "application/n-triples", Serializer, "rdflib.plugins.serializers.nt", "NTSerializer"
 )
@@ -165,24 +161,21 @@ register("ntriples", Serializer, "rdflib.plugins.serializers.nt", "NTSerializer"
 register("nt", Serializer, "rdflib.plugins.serializers.nt", "NTSerializer")
 register("nt11", Serializer, "rdflib.plugins.serializers.nt", "NT11Serializer")
 
-# Register Quad Serializers
 register(
-    "application/n-quads",
-    Serializer,
-    "rdflib.plugins.serializers.nquads",
-    "NQuadsSerializer",
+    "pretty-xml", Serializer, "rdflib.plugins.serializers.rdfxml", "PrettyXMLSerializer"
 )
-register("nquads", Serializer, "rdflib.plugins.serializers.nquads", "NQuadsSerializer")
+register("trix", Serializer, "rdflib.plugins.serializers.trix", "TriXSerializer")
 register(
     "application/trix", Serializer, "rdflib.plugins.serializers.trix", "TriXSerializer"
 )
-register("trix", Serializer, "rdflib.plugins.serializers.trix", "TriXSerializer")
 register(
-    "application/trig", Serializer, "rdflib.plugins.serializers.trig", "TrigSerializer"
+    "application/n-quads",
+    Serializer,
+    "rdflib.plugins.serializers.nquads",
+    "NQuadsSerializer",
 )
-register("trig", Serializer, "rdflib.plugins.serializers.trig", "TrigSerializer")
+register("nquads", Serializer, "rdflib.plugins.serializers.nquads", "NQuadsSerializer")
 
-# Register Triple Parsers
 register("application/rdf+xml", Parser, "rdflib.plugins.parsers.rdfxml", "RDFXMLParser")
 register("xml", Parser, "rdflib.plugins.parsers.rdfxml", "RDFXMLParser")
 register("text/n3", Parser, "rdflib.plugins.parsers.notation3", "N3Parser")
@@ -194,18 +187,16 @@ register("application/n-triples", Parser, "rdflib.plugins.parsers.ntriples", "NT
 register("ntriples", Parser, "rdflib.plugins.parsers.ntriples", "NTParser")
 register("nt", Parser, "rdflib.plugins.parsers.ntriples", "NTParser")
 register("nt11", Parser, "rdflib.plugins.parsers.ntriples", "NTParser")
-
-# Register Quad Parsers
 register("application/n-quads", Parser, "rdflib.plugins.parsers.nquads", "NQuadsParser")
 register("nquads", Parser, "rdflib.plugins.parsers.nquads", "NQuadsParser")
 register("application/trix", Parser, "rdflib.plugins.parsers.trix", "TriXParser")
 register("trix", Parser, "rdflib.plugins.parsers.trix", "TriXParser")
-register("application/trig", Parser, "rdflib.plugins.parsers.trig", "TrigParser")
 register("trig", Parser, "rdflib.plugins.parsers.trig", "TrigParser")
 
-# Register SPARQL Processors
+
 register("sparql", Result, "rdflib.plugins.sparql.processor", "SPARQLResult")
 register("sparql", Processor, "rdflib.plugins.sparql.processor", "SPARQLProcessor")
+
 register(
     "sparql",
     UpdateProcessor,
@@ -213,7 +204,7 @@ register(
     "SPARQLUpdateProcessor",
 )
 
-# Register SPARQL Result Serializers
+
 register(
     "xml",
     ResultSerializer,
@@ -257,7 +248,6 @@ register(
     "CSVResultSerializer",
 )
 
-# Register SPARQL Result Parsers
 register(
     "xml", ResultParser, "rdflib.plugins.sparql.results.xmlresults", "XMLResultParser"
 )
@@ -273,12 +263,15 @@ register(
     "rdflib.plugins.sparql.results.xmlresults",
     "XMLResultParser",
 )
+
 register(
     "application/rdf+xml",
     ResultParser,
     "rdflib.plugins.sparql.results.graph",
     "GraphResultParser",
 )
+
+
 register(
     "json",
     ResultParser,
@@ -291,6 +284,7 @@ register(
     "rdflib.plugins.sparql.results.jsonresults",
     "JSONResultParser",
 )
+
 register(
     "csv", ResultParser, "rdflib.plugins.sparql.results.csvresults", "CSVResultParser"
 )
@@ -300,6 +294,7 @@ register(
     "rdflib.plugins.sparql.results.csvresults",
     "CSVResultParser",
 )
+
 register(
     "tsv", ResultParser, "rdflib.plugins.sparql.results.tsvresults", "TSVResultParser"
 )
diff --git a/rdflib/plugins/serializers/nquads.py b/rdflib/plugins/serializers/nquads.py
index 54ee42ba..650cafc3 100644
--- a/rdflib/plugins/serializers/nquads.py
+++ b/rdflib/plugins/serializers/nquads.py
@@ -28,7 +28,7 @@ class NQuadsSerializer(Serializer):
                 stream.write(
                     _nq_row(triple, context.identifier).encode(encoding, "replace")
                 )
-        stream.write("\n".encode("latin-1"))
+        stream.write(b'\n')
 
 
 def _nq_row(triple, context):
diff --git a/rdflib/plugins/serializers/nt.py b/rdflib/plugins/serializers/nt.py
index bc265ee5..5eb49f52 100644
--- a/rdflib/plugins/serializers/nt.py
+++ b/rdflib/plugins/serializers/nt.py
@@ -19,17 +19,21 @@ class NTSerializer(Serializer):
 
     def __init__(self, store):
         Serializer.__init__(self, store)
-        self.encoding = "ascii"  # n-triples are ascii encoded
+        # n-triples v1.0 files are ascii encoded
+        self.encoding = "ascii"
 
     def serialize(self, stream, base=None, encoding=None, **args):
         if base is not None:
             warnings.warn("NTSerializer does not support base.")
-        if encoding is not None and encoding.lower() != self.encoding.lower():
-            warnings.warn("NTSerializer does not use custom encoding.")
+        if encoding is not None:
+            if encoding == "latin-1":
+                encoding = "ascii"
+            if encoding.lower() != self.encoding.lower():
+                warnings.warn("NTSerializer does not use custom encoding.")
         encoding = self.encoding
         for triple in self.store:
             stream.write(_nt_row(triple).encode(self.encoding, "_rdflib_nt_escape"))
-        stream.write("\n".encode("latin-1"))
+        stream.write(b'\n')
 
 
 class NT11Serializer(NTSerializer):
diff --git a/rdflib/plugins/serializers/rdfxml.py b/rdflib/plugins/serializers/rdfxml.py
index d7c70849..9617ad50 100644
--- a/rdflib/plugins/serializers/rdfxml.py
+++ b/rdflib/plugins/serializers/rdfxml.py
@@ -213,7 +213,7 @@ class PrettyXMLSerializer(Serializer):
                 self.subject(subject, 1)
 
         writer.pop(RDF.RDF)
-        stream.write("\n".encode("latin-1"))
+        stream.write(b'\n')
 
         # Set to None so that the memory can get garbage collected.
         self.__serialized = None
diff --git a/rdflib/plugins/serializers/trig.py b/rdflib/plugins/serializers/trig.py
index cdaedd48..fab0142a 100644
--- a/rdflib/plugins/serializers/trig.py
+++ b/rdflib/plugins/serializers/trig.py
@@ -97,4 +97,4 @@ class TrigSerializer(TurtleSerializer):
             self.write("}\n")
 
         self.endDocument()
-        stream.write("\n".encode("latin-1"))
+        stream.write(b'\n')
diff --git a/rdflib/plugins/serializers/trix.py b/rdflib/plugins/serializers/trix.py
index 05b6f528..28abefea 100644
--- a/rdflib/plugins/serializers/trix.py
+++ b/rdflib/plugins/serializers/trix.py
@@ -45,7 +45,7 @@ class TriXSerializer(Serializer):
             raise Exception("Unknown graph type: " + type(self.store))
 
         self.writer.pop()
-        stream.write("\n".encode("latin-1"))
+        stream.write(b'\n')
 
     def _writeGraph(self, graph):
         self.writer.push(TRIXNS["graph"])
diff --git a/rdflib/plugins/serializers/turtle.py b/rdflib/plugins/serializers/turtle.py
index 8ec9b479..9633b5b9 100644
--- a/rdflib/plugins/serializers/turtle.py
+++ b/rdflib/plugins/serializers/turtle.py
@@ -250,7 +250,7 @@ class TurtleSerializer(RecursiveSerializer):
                 self.write("\n")
 
         self.endDocument()
-        stream.write("\n".encode("latin-1"))
+        stream.write(b'\n')
 
         self.base = None
 
diff --git a/test/test_canonicalization.py b/test/test_canonicalization.py
index c3a8bf04..26d64ba4 100644
--- a/test/test_canonicalization.py
+++ b/test/test_canonicalization.py
@@ -10,7 +10,7 @@ from io import StringIO
 
 def get_digest_value(rdf, mimetype):
     graph = Graph()
-    graph.load(StringIO(rdf), format=mimetype)
+    graph.parse(StringIO(rdf), format=mimetype)
     stats = {}
     ig = to_isomorphic(graph)
     result = ig.graph_digest(stats)
diff --git a/test/test_finalnewline.py b/test/test_finalnewline.py
index 9b465b24..ffd95d8a 100644
--- a/test/test_finalnewline.py
+++ b/test/test_finalnewline.py
@@ -20,7 +20,7 @@ def testFinalNewline():
     failed = set()
     for p in rdflib.plugin.plugins(None, rdflib.plugin.Serializer):
         v = graph.serialize(format=p.name, encoding="latin-1")
-        lines = v.split("\n".encode("latin-1"))
+        lines = v.split(b"\n")
         if b"\n" not in v or (lines[-1] != b""):
             failed.add(p.name)
     assert len(failed) == 0, "No final newline for formats: '%s'" % failed
diff --git a/test/test_prettyxml.py b/test/test_prettyxml.py
index 86027fb3..3e7e47c0 100644
--- a/test/test_prettyxml.py
+++ b/test/test_prettyxml.py
@@ -70,7 +70,7 @@ def serialize_and_load(sourceGraph, makeSerializer):
     stream = serialize(sourceGraph, makeSerializer, False)
     stream.seek(0)
     reparsedGraph = ConjunctiveGraph()
-    reparsedGraph.load(stream)
+    reparsedGraph.parse(stream, format='xml')
     return reparsedGraph
 
 
diff --git a/test/test_serializexml.py b/test/test_serializexml.py
index 6ca25a92..338cb96d 100644
--- a/test/test_serializexml.py
+++ b/test/test_serializexml.py
@@ -69,7 +69,7 @@ def serialize_and_load(sourceGraph, makeSerializer):
     stream = serialize(sourceGraph, makeSerializer, False)
     stream.seek(0)
     reparsedGraph = ConjunctiveGraph()
-    reparsedGraph.load(stream)
+    reparsedGraph.parse(stream, format='xml')
     return reparsedGraph