wip: filesystem as a service.

tests/io/test_csv.py

@@ -1,15 +1,16 @@
 import pytest
 
-from bonobo import Bag, CsvReader, CsvWriter
+from bonobo import Bag, CsvReader, CsvWriter, open_fs
 from bonobo.constants import BEGIN, END
 from bonobo.execution.node import NodeExecutionContext
 from bonobo.util.testing import CapturingNodeExecutionContext
 
 
 def test_write_csv_to_file(tmpdir):
-    file = tmpdir.join('output.json')
-    writer = CsvWriter(path=str(file))
-    context = NodeExecutionContext(writer, None)
+    fs, filename = open_fs(tmpdir), 'output.csv'
+
+    writer = CsvWriter(path=filename)
+    context = NodeExecutionContext(writer, services={'fs': fs})
 
     context.recv(BEGIN, Bag({'foo': 'bar'}), Bag({'foo': 'baz', 'ignore': 'this'}), END)
 
@@ -18,19 +19,19 @@ def test_write_csv_to_file(tmpdir):
     context.step()
     context.stop()
 
-    assert file.read() == 'foo\nbar\nbaz\n'
+    assert fs.open(filename).read() == 'foo\nbar\nbaz\n'
 
     with pytest.raises(AttributeError):
         getattr(context, 'file')
 
 
 def test_read_csv_from_file(tmpdir):
-    file = tmpdir.join('input.csv')
-    file.write('a,b,c\na foo,b foo,c foo\na bar,b bar,c bar')
+    fs, filename = open_fs(tmpdir), 'input.csv'
+    fs.open(filename, 'w').write('a,b,c\na foo,b foo,c foo\na bar,b bar,c bar')
 
-    reader = CsvReader(path=str(file), delimiter=',')
+    reader = CsvReader(path=filename, delimiter=',')
 
-    context = CapturingNodeExecutionContext(reader, None)
+    context = CapturingNodeExecutionContext(reader, services={'fs': fs})
 
     context.start()
     context.recv(BEGIN, Bag(), END)

tests/io/test_file.py

@@ -1,6 +1,6 @@
 import pytest
 
-from bonobo import Bag, FileReader, FileWriter
+from bonobo import Bag, FileReader, FileWriter, open_fs
 from bonobo.constants import BEGIN, END
 from bonobo.execution.node import NodeExecutionContext
 from bonobo.util.testing import CapturingNodeExecutionContext
@@ -14,10 +14,10 @@ from bonobo.util.testing import CapturingNodeExecutionContext
     ]
 )
 def test_file_writer_in_context(tmpdir, lines, output):
-    file = tmpdir.join('output.txt')
+    fs, filename = open_fs(tmpdir), 'output.txt'
 
-    writer = FileWriter(path=str(file))
-    context = NodeExecutionContext(writer, None)
+    writer = FileWriter(path=filename)
+    context = NodeExecutionContext(writer, services={'fs': fs})
 
     context.start()
     context.recv(BEGIN, *map(Bag, lines), END)
@@ -25,25 +25,27 @@ def test_file_writer_in_context(tmpdir, lines, output):
         context.step()
     context.stop()
 
-    assert file.read() == output
+    assert fs.open(filename).read() == output
 
 
 def test_file_writer_out_of_context(tmpdir):
-    file = tmpdir.join('output.txt')
-    writer = FileWriter(path=str(file))
+    fs, filename = open_fs(tmpdir), 'output.txt'
 
-    with writer.open() as fp:
+    writer = FileWriter(path=filename)
+
+    with writer.open(fs) as fp:
         fp.write('Yosh!')
 
-    assert file.read() == 'Yosh!'
+    assert fs.open(filename).read() == 'Yosh!'
 
 
 def test_file_reader_in_context(tmpdir):
-    file = tmpdir.join('input.txt')
-    file.write('Hello\nWorld\n')
+    fs, filename = open_fs(tmpdir), 'input.txt'
 
-    reader = FileReader(path=str(file))
-    context = CapturingNodeExecutionContext(reader, None)
+    fs.open(filename, 'w').write('Hello\nWorld\n')
+
+    reader = FileReader(path=filename)
+    context = CapturingNodeExecutionContext(reader, services={'fs': fs})
 
     context.start()
     context.recv(BEGIN, Bag(), END)

tests/io/test_json.py

@@ -1,22 +1,23 @@
 import pytest
 
-from bonobo import Bag, JsonReader, JsonWriter
+from bonobo import Bag, JsonReader, JsonWriter, open_fs
 from bonobo.constants import BEGIN, END
 from bonobo.execution.node import NodeExecutionContext
 from bonobo.util.testing import CapturingNodeExecutionContext
 
 
 def test_write_json_to_file(tmpdir):
-    file = tmpdir.join('output.json')
-    writer = JsonWriter(path=str(file))
-    context = NodeExecutionContext(writer, None)
+    fs, filename = open_fs(tmpdir), 'output.json'
+
+    writer = JsonWriter(path=filename)
+    context = NodeExecutionContext(writer, services={'fs': fs})
 
     context.start()
     context.recv(BEGIN, Bag({'foo': 'bar'}), END)
     context.step()
     context.stop()
 
-    assert file.read() == '[\n{"foo": "bar"}\n]'
+    assert fs.open(filename).read() == '[\n{"foo": "bar"}\n]'
 
     with pytest.raises(AttributeError):
         getattr(context, 'file')
@@ -26,11 +27,11 @@ def test_write_json_to_file(tmpdir):
 
 
 def test_read_json_from_file(tmpdir):
-    file = tmpdir.join('input.json')
-    file.write('[{"x": "foo"},{"x": "bar"}]')
-    reader = JsonReader(path=str(file))
+    fs, filename = open_fs(tmpdir), 'input.json'
+    fs.open(filename, 'w').write('[{"x": "foo"},{"x": "bar"}]')
+    reader = JsonReader(path=filename)
 
-    context = CapturingNodeExecutionContext(reader, None)
+    context = CapturingNodeExecutionContext(reader, services={'fs': fs})
 
     context.start()
     context.recv(BEGIN, Bag(), END)