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/
test-python-shell.js
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var
should
=
require
(
'should'
)
;
var
PythonShell
=
require
(
'..'
)
;
describe
(
'PythonShell'
,
function
(
)
{
PythonShell
.
defaultOptions
=
{
scriptPath
:
'./test/python'
}
;
describe
(
'#ctor(script, options)'
,
function
(
)
{
it
(
'should spawn a Python process'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'exit-code.py'
)
;
pyshell
.
command
.
should
.
eql
(
[
'test/python/exit-code.py'
]
)
;
pyshell
.
terminated
.
should
.
be
.
false
;
pyshell
.
end
(
function
(
err
)
{
if
(
err
)
return
done
(
err
)
;
pyshell
.
terminated
.
should
.
be
.
true
;
done
(
)
;
}
)
;
}
)
;
it
(
'should spawn a Python process with options'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'exit-code.py'
,
{
pythonOptions
:
'-u'
}
)
;
pyshell
.
command
.
should
.
eql
(
[
'-u'
,
'test/python/exit-code.py'
]
)
;
pyshell
.
end
(
done
)
;
}
)
;
it
(
'should spawn a Python process with script arguments'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_args.py'
,
{
args
:
[
'hello'
,
'world'
]
}
)
;
pyshell
.
command
.
should
.
eql
(
[
'test/python/echo_args.py'
,
'hello'
,
'world'
]
)
;
pyshell
.
end
(
done
)
;
}
)
;
}
)
;
describe
(
'#run(script, options)'
,
function
(
)
{
it
(
'should run the script and return output data'
,
function
(
done
)
{
PythonShell
.
run
(
'echo_args.py'
,
{
args
:
[
'hello'
,
'world'
]
}
,
function
(
err
,
results
)
{
if
(
err
)
return
done
(
err
)
;
results
.
should
.
be
.
an
.
Array
.
and
.
have
.
lengthOf
(
2
)
;
results
.
should
.
eql
(
[
'hello'
,
'world'
]
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should try to run the script and fail appropriately'
,
function
(
done
)
{
PythonShell
.
run
(
'unknown_script.py'
,
function
(
err
,
results
)
{
err
.
should
.
be
.
an
.
Error
;
err
.
exitCode
.
should
.
be
.
exactly
(
2
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should run the script and fail with an extended stack trace'
,
function
(
done
)
{
PythonShell
.
run
(
'error.py'
,
function
(
err
,
results
)
{
err
.
should
.
be
.
an
.
Error
;
err
.
exitCode
.
should
.
be
.
exactly
(
1
)
;
err
.
stack
.
should
.
containEql
(
'----- Python Traceback -----'
)
;
done
(
)
;
}
)
;
}
)
;
}
)
;
describe
(
'.send(message)'
,
function
(
)
{
it
(
'should send string messages when mode is "text"'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_text.py'
,
{
mode
:
'text'
}
)
;
var
output
=
''
;
pyshell
.
stdout
.
on
(
'data'
,
function
(
data
)
{
output
+=
''
+
data
;
}
)
;
pyshell
.
send
(
'hello'
)
.
send
(
'world'
)
.
end
(
function
(
err
)
{
if
(
err
)
return
done
(
err
)
;
output
.
should
.
be
.
exactly
(
'hello\nworld\n'
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should send JSON messages when mode is "json"'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_json.py'
,
{
mode
:
'json'
}
)
;
var
output
=
''
;
pyshell
.
stdout
.
on
(
'data'
,
function
(
data
)
{
output
+=
''
+
data
;
}
)
;
pyshell
.
send
(
{
a
:
'b'
}
)
.
send
(
null
)
.
send
(
[
1
,
2
,
3
]
)
.
end
(
function
(
err
)
{
if
(
err
)
return
done
(
err
)
;
output
.
should
.
be
.
exactly
(
'{"a": "b"}\nnull\n[1, 2, 3]\n'
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should use a custom formatter'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_text.py'
,
{
formatter
:
function
(
message
)
{
return
message
.
toUpperCase
(
)
;
}
}
)
;
var
output
=
''
;
pyshell
.
stdout
.
on
(
'data'
,
function
(
data
)
{
output
+=
''
+
data
;
}
)
;
pyshell
.
send
(
'hello'
)
.
send
(
'world'
)
.
end
(
function
(
err
)
{
if
(
err
)
return
done
(
err
)
;
output
.
should
.
be
.
exactly
(
'HELLO\nWORLD\n'
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should write as-is when mode is "binary"'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_binary.py'
,
{
mode
:
'binary'
}
)
;
var
output
=
''
;
pyshell
.
stdout
.
on
(
'data'
,
function
(
data
)
{
output
+=
''
+
data
;
}
)
;
pyshell
.
send
(
new
Buffer
(
'i am not a string'
)
)
.
end
(
function
(
err
)
{
if
(
err
)
return
done
(
err
)
;
output
.
should
.
be
.
exactly
(
'i am not a string'
)
;
done
(
)
;
}
)
;
}
)
;
}
)
;
describe
(
'.receive(data)'
,
function
(
)
{
it
(
'should emit messages as strings when mode is "text"'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_text.py'
,
{
mode
:
'text'
}
)
;
var
count
=
0
;
pyshell
.
on
(
'message'
,
function
(
message
)
{
count
===
0
&&
message
.
should
.
be
.
exactly
(
'hello'
)
;
count
===
1
&&
message
.
should
.
be
.
exactly
(
'world'
)
;
count
++
;
}
)
.
on
(
'close'
,
function
(
)
{
count
.
should
.
be
.
exactly
(
2
)
;
}
)
.
send
(
'hello'
)
.
send
(
'world'
)
.
end
(
done
)
;
}
)
;
it
(
'should emit messages as JSON when mode is "json"'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_json.py'
,
{
mode
:
'json'
}
)
;
var
count
=
0
;
pyshell
.
send
(
{
a
:
'b'
}
)
.
send
(
null
)
.
send
(
[
1
,
2
,
3
,
4
,
5
]
)
;
pyshell
.
on
(
'message'
,
function
(
message
)
{
count
===
0
&&
message
.
should
.
eql
(
{
a
:
'b'
}
)
;
count
===
1
&&
should
(
message
)
.
eql
(
null
)
;
count
===
2
&&
message
.
should
.
eql
(
[
1
,
2
,
3
,
4
,
5
]
)
;
count
++
;
}
)
.
on
(
'close'
,
function
(
)
{
count
.
should
.
be
.
exactly
(
3
)
;
}
)
.
end
(
done
)
;
}
)
;
it
(
'should properly buffer partial messages'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_json.py'
,
{
mode
:
'json'
}
)
;
pyshell
.
on
(
'message'
,
function
(
message
)
{
message
.
should
.
be
.
an
.
Object
;
message
.
should
.
eql
(
{
a
:
true
}
)
;
}
)
.
receive
(
'{"a"'
)
.
receive
(
':'
)
.
receive
(
'true}\n'
)
.
end
(
done
)
;
}
)
;
it
(
'should not be invoked when mode is "binary"'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_args.py'
,
{
args
:
[
'hello'
,
'world'
]
,
mode
:
'binary'
}
)
;
pyshell
.
receive
=
function
(
)
{
throw
new
Error
(
'should not emit messages in binary mode'
)
;
}
;
pyshell
.
end
(
done
)
;
}
)
;
it
(
'should use a custom parser function'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'echo_text.py'
,
{
mode
:
'text'
,
parser
:
function
(
message
)
{
return
message
.
toUpperCase
(
)
;
}
}
)
;
var
count
=
0
;
pyshell
.
on
(
'message'
,
function
(
message
)
{
count
===
0
&&
message
.
should
.
be
.
exactly
(
'HELLO'
)
;
count
===
1
&&
message
.
should
.
be
.
exactly
(
'WORLD!'
)
;
count
++
;
}
)
.
on
(
'close'
,
function
(
)
{
count
.
should
.
be
.
exactly
(
2
)
;
}
)
.
send
(
'hello'
)
.
send
(
'world!'
)
.
end
(
done
)
;
}
)
;
}
)
;
describe
(
'.end(callback)'
,
function
(
)
{
it
(
'should end normally when exit code is zero'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'exit-code.py'
)
;
pyshell
.
end
(
function
(
err
)
{
if
(
err
)
return
done
(
err
)
;
pyshell
.
exitCode
.
should
.
be
.
exactly
(
0
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should emit error if exit code is not zero'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'exit-code.py'
,
{
args
:
3
}
)
;
pyshell
.
on
(
'error'
,
function
(
err
)
{
err
.
should
.
have
.
properties
(
{
message
:
'process exited with code 3'
,
exitCode
:
3
}
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should emit error when data is written to stderr'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'error.py'
)
;
pyshell
.
on
(
'error'
,
function
(
err
)
{
err
.
message
.
should
.
be
.
exactly
(
'ZeroDivisionError: integer division or modulo by zero'
)
;
err
.
should
.
have
.
property
(
'traceback'
)
;
err
.
traceback
.
should
.
containEql
(
'Traceback (most recent call last)'
)
;
done
(
)
;
}
)
;
}
)
;
}
)
;
describe
(
'.parseError(data)'
,
function
(
)
{
it
(
'should extend error with context properties'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'exit-code.py'
,
{
args
:
1
}
)
;
pyshell
.
on
(
'error'
,
function
(
err
)
{
err
.
should
.
have
.
properties
(
[
'exitCode'
,
'script'
,
'options'
,
'args'
]
)
;
done
(
)
;
}
)
;
}
)
;
it
(
'should extend err.stack with traceback'
,
function
(
done
)
{
var
pyshell
=
new
PythonShell
(
'error.py'
)
;
pyshell
.
on
(
'error'
,
function
(
err
)
{
err
.
stack
.
should
.
containEql
(
'----- Python Traceback -----'
)
;
err
.
stack
.
should
.
containEql
(
'File "test/python/error.py", line 6'
)
;
err
.
stack
.
should
.
containEql
(
'File "test/python/error.py", line 4'
)
;
done
(
)
;
}
)
;
}
)
;
}
)
;
}
)
;
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