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infernal-interpreter/tests/tests.py

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import os
import sys
import traceback
sys.path.insert(1, os.path.join(sys.path[0], '..'))
import infernal
################################################################################
tests = []
def add_test(name, result, register, code):
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tests.append((name, result, register, code))
def printf (str, *args):
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print(str.format(*args))
def execute_tests():
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print("Executing tests!")
total_tests = 0
failed_tests = 0
error_tests = 0
for name, result, register, code in tests:
total_tests += 1
line_nr = None
try:
emu = infernal.Emulator(code)
emu.setStack("junk...", "calling eip")
emu.setRegs( rip = 0, rbp = 'old bp')
except infernal.CodeParseException as e:
error_tests += 1
printf("Encountered error when parsing {}, at line {}: {}",
name, e.line_nr, e.str)
try:
for line_nr in emu:
pass
if isinstance(result, BaseException):
printf("Error should have happened in {}, but did not", name)
failed_tests += 1
output = emu.getVal(register)
if output != result:
failed_tests += 1
printf("Failed in {}. {} was {}, should be {}",
name, register, output, result)
except BaseException as e:
print(e)
if not isinstance(result, BaseException) or not isinstance(e, result):
error_tests += 1
printf("Encountered error in {}, at operation {}: {}",
name, emu.getVal('%rip'), e)
traceback.print_exc()
printf("Tests done! {}/{}.",
total_tests - failed_tests - error_tests, total_tests)
printf("{} failed, and {} encountered a python error",
failed_tests, error_tests)
################################################################################
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# Arithmetic Operations
add_test("constant $255", 255, "%rsi", """
movq $255, %rsi
""")
add_test("static addition 10+$20", 30, "%rsi", """
movq $10, %rsi
addq $20, %rsi
""")
add_test("register addition 10+20", 30, "%rsi", """
movq $10, %rsi
movq $20, %rax
addq %rax, %rsi
""")
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add_test("register subtraction 10-20", -10, "%rsi", """
movq $10, %rsi
movq $20, %rax
subq %rax, %rsi
""")
################################################################################
# Branching
branch_tests = [
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("jg",10,">",5,0), ("jg",5,">",5,1), ("jg",5,">",10,1),
("jl",10,"<",5,1), ("jl",5,"<",5,1), ("jl",5,"<",10,0),
("je",10,"==",5,1),("je",5,"==",5,0),("je",5,"==",10,1),
("jge",10,">=",5,0),("jge",5,">=",5,0),("jge",5,">=",10,1),
("jle",10,"<=",5,1),("jle",5,"<=",5,0),("jle",5,"<=",10,0),
("jne",10,"!=",5,0),("jne",5,"!=",5,1),("jne",5,"!=",10,0),
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]
for jump_instruct, a, comp, b, result in branch_tests:
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add_test("branch {a} {comp} {b}={result}".format(a=a,comp=comp,b=b,result=not result), result, "%rsi", """
start: cmpq ${b}, ${a}
{jump_instruct} true
movq $1, %rsi
jmp return
true: movq $0, %rsi
return: ret
""".format(a=a,b=b,jump_instruct=jump_instruct))
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################################################################################
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# Junk Comparisons
add_test("invalid comparison 1", infernal.JunkComparisonException, "None", """
start: movq $100, %rsp # Set stack pointer to a random position.
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popq %rsi # Move a Junk value into %rsi
cmpq $10, %rsi # Do a Junk comparison, which triggers the `i` comp
# virtual register.
jg start # Attempt to do a jump to the start, if (Junk-10)>0,
# which makes no sense, and thus throws an error.
""")
add_test("invalid addition 1", infernal.JunkComparisonException, "None", """
start: movq $100, %rsp # Set stack pointer to a random position.
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popq %rsi # Move a Junk value into %rsi
addq %rsi, %rsp # Adds Junk to 101, which produces Junk.
cmpq $10, %rsp # Do a Junk comparison, which triggers the `i` comp
# virtual register.
jg start # Attempt to do a jump to the start, if (Junk-10)>0,
# which makes no sense, and thus throws an error.
""")
add_test("invalid addition 2", infernal.JunkComparisonException, "None", """
start: movq $100, %rsp # Set stack pointer to a random position.
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popq %rsi # Move a Junk value into %rsi
addq %rsp, %rsi # Adds 101 to Junk, which produces Junk.
cmpq $10, %rsi # Do a Junk comparison, which triggers the `i` comp
# virtual register.
jg start # Attempt to do a jump to the start, if (Junk-10)>0,
# which makes no sense, and thus throws an error.
""")
add_test("invalid subtraction 1", infernal.JunkComparisonException, "None", """
start: movq $100, %rsp # Set stack pointer to a random position.
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popq %rsi # Move a Junk value into %rsi
subq %rsi, %rsp # Adds Junk to 101, which produces Junk.
cmpq $10, %rsp # Do a Junk comparison, which triggers the `i` comp
# virtual register.
jg start # Attempt to do a jump to the start, if (Junk-10)>0,
# which makes no sense, and thus throws an error.
""")
add_test("invalid subtraction 2", infernal.JunkComparisonException, "None", """
start: movq $100, %rsp # Set stack pointer to a random position.
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popq %rsi # Move a Junk value into %rsi
subq %rsp, %rsi # Adds 101 to Junk, which produces Junk.
cmpq $10, %rsi # Do a Junk comparison, which triggers the `i` comp
# virtual register.
jg start # Attempt to do a jump to the start, if (Junk-10)>0,
# which makes no sense, and thus throws an error.
""")
################################################################################
if __name__ == "__main__":
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execute_tests()