def test_import_roam(self):
"""
Coverage:
* KnowledgeGraph.import_roam() import JSON from Roam Research export
"""
# create a KnowledgeGraph object
with warnings.catch_warnings():
warnings.filterwarnings("ignore", message="unclosed file*")
kg = kglab.KnowledgeGraph()
# load JSON export into KG
path = pathlib.Path("dat/roam.json")
kg.import_roam(path)
measure = kglab.Measure()
measure.measure_graph(kg)
node_count = measure.get_node_count()
edge_count = measure.get_edge_count()
# ic(node_count)
# ic(edge_count)
assert node_count == 44
assert edge_count == 208
def test_multiple_file_load_rdf(self):
"""
Coverage:
* KnowledgeGraph.load_rdf() load RDF from multiple files using a wildcard expression
"""
# create a KnowledgeGraph object
kg = kglab.KnowledgeGraph()
# load RDF from a file1 into KG
kg.load_rdf("dat/gorm.ttl", format="ttl")
# load RDF from a file2 into KG
kg.load_rdf("dat/nom.ttl", format="ttl")
measure = kglab.Measure()
measure.measure_graph(kg)
sequential_edge_count = measure.get_edge_count()
sequential_node_count = measure.get_node_count()
# load RDF from all files (file1 and file2) matching the
# expression into KG
kg_multifile = kglab.KnowledgeGraph()
kg_multifile.load_rdf("dat/*m.ttl", format="ttl")
measure.reset()
measure.measure_graph(kg_multifile)
multifile_edge_count = measure.get_edge_count()
multifile_node_count = measure.get_node_count()
# ic(multifile_edge_count)
# ic(multifile_node_count)
assert multifile_edge_count == sequential_edge_count
assert multifile_node_count == sequential_node_count
def test_load_save_measure(self):
"""
Coverage:
* KnowledgeGraph() constructor
* KnowledgeGraph.load_rdf() from pathlib.Path, urlpath.URL
* KnowledgeGraph.safe_rdf()
* KnowledgeGraph.load_jsonld()
* KnowledgeGraph.save_jsonld()
* Measure() constructor
* Measure.measure_graph()
* Measure.get_node_count()
"""
tmp = tempfile.NamedTemporaryFile(mode="w+b", delete=False)
try:
with warnings.catch_warnings():
warnings.filterwarnings("ignore", message="unclosed file*")
# load RDF from urlpath.URL
kg = kglab.KnowledgeGraph()
path = urlpath.URL(
"https://storage.googleapis.com/kglab-tutorial/foaf.rdf")
kg.load_rdf(path, format="xml")
tmp.close()
# save RDF to local file reference
kg.save_rdf(tmp.name)
tmp.close()
# load RDF from pathlib.Path
kg = kglab.KnowledgeGraph()
path = pathlib.Path(tmp.name)
kg.load_rdf(path)
tmp.close()
# save JSON-LD to local file reference
kg.save_jsonld(tmp.name)
tmp.close()
# load JSON-LD from pathlib.Path
kg = kglab.KnowledgeGraph()
path = pathlib.Path(tmp.name)
kg.load_jsonld(path)
# measure graph
measure = kglab.Measure()
measure.measure_graph(kg)
# verify
self.assertTrue(measure.get_node_count() == 35)
self.assertTrue(measure.get_edge_count() == 62)
finally:
os.unlink(tmp.name)
tmp.close()
def test_single_file_load_rdf(self):
"""
Coverage:
* KnowledgeGraph.load_rdf() load RDF from a single local file (str)
"""
# create a KnowledgeGraph object
kg = kglab.KnowledgeGraph()
# load RDF from a file
kg.load_rdf("dat/gorm.ttl", format="ttl")
measure = kglab.Measure()
measure.measure_graph(kg)
edge_count = measure.get_edge_count()
node_count = measure.get_node_count()
assert edge_count == 25
assert node_count == 15
def test_multiple_file_load_parquet(self):
"""
Coverage:
* KnowledgeGraph.load_parquet() load jsonld from multiple files using a wildcard expression
"""
# create a KnowledgeGraph object
with warnings.catch_warnings():
warnings.filterwarnings("ignore", message="unclosed file*")
kg = kglab.KnowledgeGraph()
# load parquet from a file1 into KG
kg.load_parquet("dat/gorm.parquet")
# load parquet from a file2 into KG
kg.load_parquet("dat/nom.parquet")
measure = kglab.Measure()
measure.measure_graph(kg)
sequential_edge_count = measure.get_edge_count()
sequential_node_count = measure.get_node_count()
# ic(sequential_edge_count)
# ic(sequential_node_count)
# load parquet from all files (file1 and file2) matching the
# expression into KG
kg_multifile = kglab.KnowledgeGraph()
kg_multifile.load_parquet("dat/*m.parquet")
measure.reset()
measure.measure_graph(kg_multifile)
multifile_edge_count = measure.get_edge_count()
multifile_node_count = measure.get_node_count()
# ic(multifile_edge_count)
# ic(multifile_node_count)
assert multifile_edge_count == sequential_edge_count
assert multifile_node_count == sequential_node_count
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import kglab
# create a KnowledgeGraph object
kg = kglab.KnowledgeGraph()
# load RDF from a URL
kg.load_rdf("https://storage.googleapis.com/kglab-tutorial/foaf.rdf",
format="xml")
# measure the graph
measure = kglab.Measure()
measure.measure_graph(kg)
print("edges: {}\n".format(measure.get_edge_count()))
print("nodes: {}\n".format(measure.get_node_count()))
# serialize as a string in "Turtle" TTL format
ttl = kg.save_rdf_text()
print("```")
print(ttl[:999])
print("```")
