def _run(self):
# Start the program:
self.pWrap = self._createPWrap([join(".", self.executionDirectory, self.executable)])
self._startPWrap(self.pWrap)
# Wait for child being ready:
printTester("Waiting for: 'Hello world!'")
expected: str = "Hello world!"
while True:
if self.pWrap.hasTerminated() and not self.pWrap.canReadLineStdout():
self._progTerminatedUnexpectedly()
# Read a single line form the program output:
line: str = self.pWrap.readLineStdout()
# Perform a "student save" compare:
if studSaveStrComp(expected, line):
break
else:
printTester(f"Expected '{expected}' but received read '{line}'")
# Wait reading until the program terminates:
printTester("Waiting for the program to terminate...")
if not self.pWrap.waitUntilTerminationReading(3):
printTester("Program did not terminate - killing it!")
self.pWrap.kill()
self._failWith("Program did not terminate at the end.")
# Always cleanup to make sure all threads get joined:
self.pWrap.cleanup()
def __matchChildHello(self, line: str):
# Get PPID:
ppid = self.pWrap.getPID()
try:
process: Process = Process(ppid)
except NoSuchProcess:
self.__progTerminatedUnexpectedly()
# Get child PID:
pidRegex = r"\D*(\d+)\D*(" + str(ppid) + r")"
m = search(pidRegex, line)
if m is None:
printTester("No PID found in string: '{}'".format(line))
return False
childPid = int(m.group(1)) # Child PID
# Check if string read matches:
expected: str = "I'm your child! PID: {}, PPID: {}".format(childPid, ppid)
if not studSaveStrComp(expected, line):
printTester("Expected: '{}' but received: '{}'".format(expected, line))
return False
# Check if process exists for the child PID:
if not self.__existsChildWithPid(childPid):
printTester("No child process with PID {} exists".format(childPid))
return False
return True
def __waitForInput(self, expected: str):
printTester("Waiting for: '{}'".format(expected))
while True:
if self.pWrap.hasTerminated(
) and not self.pWrap.canReadLineStdout():
self._progTerminatedUnexpectedly()
# Read a single line form the programm output:
line: str = self.pWrap.readLineStdout()
# Perform a "student save" compare:
if studSaveStrComp(expected, line):
break
else:
printTester("Expected '{}' but received '{}'".format(
expected, line))
def __matchChildBye(self, line: str, pids: List[int]):
# Get child PID:
pidRegex = r"\D*(\d+)\D*"
m = search(pidRegex, line)
if m is None:
printTester("No PID found in string: '{}'".format(line))
return False
childPid = int(m.group(1)) # Child PID
# Check if the processes PID is one of those that said hello:
if not childPid in pids:
self._failWith("PID {} unknown. We are only aware of: {}".format(childPid, str(pids)))
pids.remove(childPid)
# Check if string read matches:
expected: str = "Child with PID {} terminated.".format(childPid)
if not studSaveStrComp(expected, line):
printTester("Expected: '{}' but received: '{}'".format(expected, line))
return False
return True
def _run(self):
# Start the program:
self.pWrap = self._createPWrap([join(".", self.makefileLocation, "main")])
self._startPWrap(self.pWrap)
# Wait to make sure the child processes has started:
sleep(0.5)
if self.pWrap.hasTerminated():
self.__progTerminatedUnexpectedly()
# Wait for child beeing ready:
printTester("Waiting for: 'Enter process count:'")
while True:
if self.pWrap.hasTerminated():
self.__progTerminatedUnexpectedly()
if studSaveStrComp("Enter process count:", self.pWrap.readLineStdout()):
self.pWrap.writeStdin("{}\n".format(self.count))
break
# Give the programm some time to start it's child processes:
sleep(0.25)
printTester("Waiting for: \"I'm your child! PID: %i, PPID: %i\\n\"")
for i in range(0, self.count):
while True:
if self.pWrap.hasTerminated():
self.__progTerminatedUnexpectedly()
if self.__matchChildHello(self.pWrap.readLineStdout()):
break
# Get all child process PIDs:
pids: List[int] = self.__getChildPids()
# Send 'END' to terminate processes:
printTester("Sending 'END's...")
for i in range(0, self.count):
if self.pWrap.hasTerminated():
self.__progTerminatedUnexpectedly()
# Check child process count:
self.__testChildProcessCount(self.count - i)
self.pWrap.writeStdin("END\n")
sleep(0.25)
printTester("Waiting for: \"Child with PID %i terminated.\\n\"")
while True:
if self.pWrap.hasTerminated() and not self.pWrap.canReadLineStdout():
self.__progTerminatedUnexpectedly()
if self.__matchChildBye(self.pWrap.readLineStdout(), pids):
break
# Check if all children terminated:
self.__testChildProcessCount(0)
# Wait reading until the programm terminates:
printTester("Waiting for the programm to terminate...")
if(not self.pWrap.waitUntilTerminationReading(3)):
printTester("Programm did not terminate - killing it!")
pWrap.kill()
if not self.pWrap.hasTerminated():
self._failWith("Programm did not terminate at the end.")
# Allways cleanup to make sure all threads get joined:
self.pWrap.cleanup()