I am using the callexec function to call a python script. The python script returns a value in the stadout but I am not able to get the value in the return parameter. Is there a way to pass the value to the results variable?
The is the CANape script that I am using:
double err;
char result[];
err = CallExecutable("C:\\Program Files (x86)\\Python38-32\\python.exe", "C:\\Users\\XXXX\\Desktop\\Read_Current.py 1", 1, result);
print("%s", result);
Thanks in advance
The result buffer provided to CallExecutable will return the result of the exit code from the python program. The following python code if called will return 123 and that is what the value of result will be in your code above.
import sys
sys.exit(123)
If you are looking to pass data back from the python script I've done this using the function DLL mechanism (there is some demo code included with CANape for this). It involves a little C++ wrapper to interface with python or other languages.
Related
Suppose I have the following program increment.dart,
import 'dart:io';
void main() {
var input = int.parse(stdin.readLineSync());
print(++input);
}
and I want to test it similar to expect() from test package like,
test('Increment', () {
expect(/*call program with input 0*/ , equals(1));
});
Elaborating my use case:
I use this website to practice by solving the puzzles. They do have an online IDE but it doesn't have any debugging tools and the programs use std io. So what I have to do for debugging my code locally is to replace every stdin.readLineSync() with hardcoded test values and then repeat for every test. I'm looking a way to automate this.(Much like how things work on their site)
Following #jamesdlin's suggestion, I looked up info about Processes and found this example and whipped up the following test:
#TestOn('vm')
import 'dart:convert';
import 'dart:io';
import 'package:test/test.dart';
void main() {
test('Increment 0', () async {
final input = 0;
final path = 'increment.dart';
final process = await Process.start('dart', ['$path']);
// Send input to increment.dart's stdin.
process.stdin.writeln(input);
final lineStream =
process.stdout.transform(Utf8Decoder()).transform(LineSplitter());
// Test output of increment.dart
expect(
lineStream,
emitsInOrder([
// Values match individual events.
'${input + 1}',
// By default, more events are allowed after the matcher finishes
// matching. This asserts instead that the stream emits a done event and
// nothing else.
emitsDone
]));
});
}
Trivia:
#TestOn()
Used to specify a Platform Selector.
Process.start()
Used to run commands from the program itself like, ls -l (code: Process.start('ls', ['-l'])). First argument takes the command to be executed and second argument takes the list of arguments to be passed.
Testing stream
I want to know the difference between Exit and Return inside a proc.
I have a script that contains a lot of proc, one of them uses exit and some value ex:
proc someProc {code} {
exit $code
}
and another one is like:
proc multiply {value} {
set number [expr {$value * 5}]
return $number
}
Does the exit stop the running script or what is the difference?
The exit command makes the current process stop. The running program will be gone afterwards (though the file containing the code will still be there). Its optional argument is the error code to hand to the OS; the default is zero, for no-error-at-all.
The return command makes the current procedure call stop. The optional argument provides a way to say what the result of the call to the procedure is; the default is the empty string (given that Tcl doesn't have NULL/null/nil/etc. at all).
Internally, exit does a system call to the “stop running this program” OS API, and return throws an exception that the general procedure management code transforms into the result of the call.
I am trying to get Ranorex to output a text file which will look like the following:
Pass
74
The pass/fail result will be obtained based on whether the test running has passed or failed. The number will be hardcoded to all I need to do is store that in a variable and include it in the output.
I would have thought it would have been simple but I'm struggling to get any help from Ranorex. I though I might be able to use the reporting function, change the output file type and alter the report structure but that didn't work either.
Although I am used to Ranorex and writing my own user code, I am new to adapting it in this way.
All my user code is written in C#
Can anyone offer any assistance?
Thanks!
Edit: So I've now managed to get Ranorex to output a text file and I can put any text into it, including a string stored in a variable.
However I'm struggling to store the pass/fail result of my test in a string that I can output.
I've discovered a way to do this however it relies on the following:-
The user code must be in separate test
This separate test must exist in a sibling test case to the one your main test is in
Both this test case and the case containing your main test must both be part of a parent test case
For example:
Parent TC
.....-AddUser TC
.........-MAIN TEST
.....-AddUser FailCheck
.........-USER CODE
You can then set your AddUser TC to 'Continue with sibling on fail'
The user code is as follows:
public static void Output()
{
string result = "";
ITestCase iCase = TestSuite.Current.GetTestCase("Add_User_Test"); // The name of your Test Case
if(iCase.Status == Ranorex.Core.Reporting.ActivityStatus.Failed){
result = "Failed"; }
if(iCase.Status == Ranorex.Core.Reporting.ActivityStatus.Success){
result = "Passed"; }
int testrunID = 79;
using (StreamWriter writer =
new StreamWriter("testresult.txt"))
{
writer.WriteLine(testrunID);
writer.WriteLine(result);
}
}
This will take the testrunID (specific to each test case) and the result of the test and output it to a text file.
The idea is then to read in the file with a custom java application I've developed and push the data into a test case management program such as QA Complete which can mark tests as Passed/Failed automatically
You can run the test suite directly using the TestSuiteRunner.Run() method. This will allow you to look at the return value of that directly and output pass or failure based on the return value.
http://www.ranorex.com/Documentation/Ranorex/html/M_Ranorex_Core_Testing_TestSuiteRunner_Run.htm
if(TestSuiteRunner.Run(typeof({testSuiteclass}),{Command Line Arguments})==0)
{
File.WriteLine("success");
}
else
{
File.WriteLine("failure");
}
I'm writing my lua code with SciTE,
i wrote a C function that could be invoked by lua like this:
int hello(lua_State* L){
printf("----->> Hi! %s\n", lua_tostring(L, 1));
return 0;
}
and my lua code is like this:
zcLua.hello('Kitty')
print'hello'
('zcLua' is the libname i registered). in lua console, the output is
----->> Hi! Kitty
hello
but in SciTE the output is reversed :
hello
----->> Hi! Kitty
how can i correct that? seems it's because code print'hello' is executed faster than invoking the c function
As I don't know SciTE, I can't tell it for sure. But I think the print function is refined in the editor, which places the output data in a buffer that is only displayed at the end of script, or in a separate thread.
I'm using a graphics library that lets you program in Lua. I have a need for the A* pathfinding library so I found one online. It's just 1 lua file that does the pathfinding and 1 example file. In the example file it uses the object like:
-- Loading the library
local Astar = require 'Astar'
Astar(map,1) -- Inits the library, sets the OBST_VALUE to 1
I run the script and everything works. So now I add the Astar.lua file to the path location where my graphics engine is running and do the same thing and I get the error on the Astar(map, 1) line:
"attempt to call local 'AStar' (a number value)
Any ideas why I would be getting that error when I'm doing the same thing as the example that comes with this AStar lib?
Here is a little of the AStar file
-- The Astar class
local Astar = {}
setmetatable(Astar, {__call = function(self,...) return self:init(...) end})
Astar.__index = Astar
-- Loads the map, sets the unwalkable value, inits pathfinding
function Astar:init(map,obstvalue)
self.map = map
self.OBST_VALUE = obstvalue or 1
self.cList = {}
self.oList = {}
self.initialNode = false
self.finalNode = false
self.currentNode = false
self.path = {}
self.mapSizeX = #self.map[1]
self.mapSizeY = #self.map
end
So note that when I run this from my graphics engine it's returning 1, but when run from the example that it came with it's returning a table, which is what it should be returning. So not sure why it would only be returning 1.
How is Astar getting added to the package.loaded table for the example script, as opposed to your code?
QUICK LUA SYNTACTIC SUGAR REVIEW:
func 'string' is equivalent to func('string')
tabl.ident is equivalent to tabl['ident']
When you run a script using require('Astar'), this is what it does:
checks if package.loaded['Astar'] is a non-nil value.
If it is, it returns this value. Otherwise it continues down this list.
Runs through filenames of the patterns listed in package.path (and package.cpath), with '?' replaced with 'Astar', until it finds the first file matching the pattern.
Sets package.loaded['Astar'] to true.
Runs the module script (found via path search above- for the sake of this example we'll assume it's not a C module) with 'Astar' as an argument (accessible as ... in the module script).
If the script returns a value, this value is placed into package.loaded['Astar'].
The contents of package.loaded['Astar'] are returned.
Note that the script can load the package into package.loaded['Astar'] as part of its execution and return nothing.
As somebody noted in the comments above, your problem may come from loading the module using 'AStar' instead of 'Astar'. It's possible that Lua is loading this script using this string (since, on the case-insensitive Windows, a search for a file named "AStar.lua" will open a file called "Astar.lua"), but the script isn't operating with that (by using a hard-coded "Astar" instead of the "AStar" Lua is loading the script under).
You need to add return Astar at the end of Astar.lua.