def test_stmt(self):
prg8 = "skip"
ast8 = ast.parse_string(prg8)
print ast8
sv = stats_visitor.StatsVisitor()
sv.visit(ast8)
self.assertEquals(sv.get_num_stmts(), 1)
self.assertEquals(sv.get_num_vars(), 0)
def test_assume(self):
prg6 = "assume x < 4"
ast6 = ast.parse_string(prg6)
print ast6
sv = stats_visitor.StatsVisitor()
sv.visit(ast6)
self.assertEquals(sv.get_num_stmts(), 1)
self.assertEquals(sv.get_num_vars(), 1)
def test_havoc(self):
prg7 = "havoc y"
ast7 = ast.parse_string(prg7)
print ast7
sv = stats_visitor.StatsVisitor()
sv.visit(ast7)
self.assertEquals(sv.get_num_stmts(), 1)
self.assertEquals(sv.get_num_vars(), 1)
def test_if2(self):
prg2 = "if true then a :=1"
ast2 = ast.parse_string(prg2)
print ast2
sv = stats_visitor.StatsVisitor()
sv.visit(ast2)
self.assertEquals(sv.get_num_stmts(), 2)
self.assertEquals(sv.get_num_vars(), 1)
def test_asg(self):
prg1 = "x := 10; print_state"
ast1 = ast.parse_string(prg1)
print ast1
sv = stats_visitor.StatsVisitor()
sv.visit(ast1)
self.assertEquals(sv.get_num_stmts(), 2)
self.assertEquals(sv.get_num_vars(), 1)
def test_ele(self):
prg13 = "x :=1; y := -2; z := 3"
ast13 = ast.parse_string(prg13)
print ast13
sv = stats_visitor.StatsVisitor()
sv.visit(ast13)
self.assertEquals(sv.get_num_stmts(), 3)
self.assertEquals(sv.get_num_vars(), 3)
def test_one (self):
prg1 = "x := 10; print_state"
ast1 = ast.parse_string (prg1)
sv = stats_visitor.StatsVisitor ()
sv.visit (ast1)
# UNCOMMENT to run the test
self.assertEquals (sv.get_num_stmts (), 2)
self.assertEquals (sv.get_num_vars (), 1)
def test_exp(self):
prg9 = "y := (3+ x) * y"
ast9 = ast.parse_string(prg9)
print ast9
pv = ast.PrintVisitor()
pv.visit(ast9)
sv = stats_visitor.StatsVisitor()
sv.visit(ast9)
self.assertEquals(sv.get_num_stmts(), 1)
self.assertEquals(sv.get_num_vars(), 2)
def test_assert(self):
prg5 = "assert x < 4"
ast5 = ast.parse_string(prg5)
print ast5
sv = stats_visitor.StatsVisitor()
# self.assertEquals(sv.get_num_stmts(), 2)
# self.assertEquals(sv.get_num_vars(), 2)
sv.visit(ast5)
self.assertEquals(sv.get_num_stmts(), 1)
self.assertEquals(sv.get_num_vars(), 1)
def test_while(self):
prg3 = "while 1 <= 2 inv true do { x := 0} "
ast3 = ast.parse_string(prg3)
print ast3
sv = stats_visitor.StatsVisitor()
#nums = sv.get_num_stats()
#numv = sv.get_num_vars()
sv.visit(ast3)
self.assertEquals(sv.get_num_stmts(), 2)
self.assertEquals(sv.get_num_vars(), 1)
def test_intVar(self):
prg12 = "havoc x, y, z"
ast12 = ast.parse_string(prg12)
print ast12
# pv = ast.PrintVisitor()
# pv.visit(ast12)
sv = stats_visitor.StatsVisitor()
sv.visit(ast12)
self.assertEquals(sv.get_num_stmts(), 1)
self.assertEquals(sv.get_num_vars(), 3)
def test_others(self):
prg1 = """
{
x := 10;
assert x = 10;
havoc x;
assume x > 0
}
"""
ast1 = ast.parse_string(prg1)
sv = stats_visitor.StatsVisitor()
sv.visit(ast1)
# UNCOMMENT to run the test
self.assertEquals(sv.get_num_stmts(), 4)
self.assertEquals(sv.get_num_vars(), 1)
def test_while(self):
prg1 = """
x := 10;
y := 0;
z := 0;
while x > 0 do
y := y + 1;
print_state
"""
ast1 = ast.parse_string(prg1)
sv = stats_visitor.StatsVisitor()
sv.visit(ast1)
# UNCOMMENT to run the test
self.assertEquals(sv.get_num_stmts(), 6)
self.assertEquals(sv.get_num_vars(), 3)
def test_if(self):
prg1 = """
x := 10;
if x > 10 then
x := 5
else
x := 15;
print_state
"""
ast1 = ast.parse_string(prg1)
sv = stats_visitor.StatsVisitor()
sv.visit(ast1)
# UNCOMMENT to run the test
self.assertEquals(sv.get_num_stmts(), 5)
self.assertEquals(sv.get_num_vars(), 1)
def test_one(self):
prg1 = """{x:=1;y:=2};
havoc z,a,b;
if(x=1)then z:=x+y
else z:=x*y;
while(y=2)do y:=y-1;
assert(z>x);
assume(z<100);
b:=9;
y:=e+f;
print_state"""
ast1 = ast.parse_string(prg1)
sv = stats_visitor.StatsVisitor()
sv.visit(ast1)
self.assertEquals(sv.get_num_stmts(), 13)
self.assertEquals(sv.get_num_vars(), 7)
def test_stats_visitor(self):
prg1 = """{a := 1;
b := -1;
c := a + b; d := b - a;
e := a * b; f := a / b};
if a > 1 and a >= b then b := 3;
if a <= 1 or b < 3 then a := 1;
if false and not a = 1 then a := 1 else print_state;
skip;
print_state;
while (a < 3) and true do {a := a + 1};
assume b = -1;
havoc c,d;
assert a = 3"""
ast1 = ast.parse_string(prg1)
sv = stats_visitor.StatsVisitor()
sv.visit(ast1)
self.assertEquals(sv.get_num_stmts(), 20)
self.assertEquals(sv.get_num_vars(), 6)