Write test cases for PacmanAssessor

[jason-callaway]

Need test cases for PacmanAssessor, new in release 0.3.2.

lem/lem/host/assessor.py

Lines 210 to 245 in b463c90

	class PacmanAssessor(Assessor):
	def __init__(self):
	super(PacmanAssessor, self).__init__()
	def assess(self):
	lines = []
	# check dependencies
	has_audit_command = ["/usr/bin/pacman", "-Qi", "arch-audit"]
	p = subprocess.Popen(has_audit_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
	p.communicate()
	if p.returncode == 1:
	_msg = "The optional argument --pacman requires arch-audit to be installed. Please install and try again."
	FRTLogger.error(_msg)
	sys.exit(1)
	# find CVEs
	command = ["arch-audit", "-f", "'%n %c'"]
	p = subprocess.Popen(command,
	stdout=subprocess.PIPE,
	stderr=subprocess.PIPE)
	out, err = p.communicate()
	if p.returncode != 0:
	raise OSError((p.returncode, err))
	lines = out.split('\n')
	# assume that each line of output has the format "libtiff CVE-2019-7663,CVE-2019-6128"
	for line in lines:
	if not line:
	continue
	pkgname, cves = line.replace("'", "").split(" ")
	cves = RE_CVE.findall(cves)
	if not cves:
	continue
	self.cves.extend(cves)
	self.cves = list(set(self.cves))