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test_function.py
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test_function.py
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import taichi as ti
@ti.test(experimental_real_function=True)
def test_function_without_return():
x = ti.field(ti.i32, shape=())
@ti.func
def foo(val: ti.i32):
x[None] += val
@ti.kernel
def run():
foo(40)
foo(2)
x[None] = 0
run()
assert x[None] == 42
@ti.test(experimental_real_function=True)
def test_function_with_return():
x = ti.field(ti.i32, shape=())
@ti.func
def foo(val: ti.i32) -> ti.i32:
x[None] += val
return val
@ti.kernel
def run():
a = foo(40)
foo(2)
assert a == 40
x[None] = 0
run()
assert x[None] == 42
@ti.test(experimental_real_function=True, exclude=[ti.opengl, ti.cc])
def test_function_with_multiple_last_return():
x = ti.field(ti.i32, shape=())
@ti.func
def foo(val: ti.i32) -> ti.i32:
if x[None]:
x[None] += val * 2
return val * 2
else:
x[None] += val
return val
@ti.kernel
def run():
a = foo(40)
foo(1)
assert a == 40
x[None] = 0
run()
assert x[None] == 42
@ti.test(experimental_real_function=True)
def test_call_expressions():
x = ti.field(ti.i32, shape=())
@ti.func
def foo(val: ti.i32) -> ti.i32:
if x[None] > 10:
x[None] += 1
x[None] += val
return 0
@ti.kernel
def run():
assert foo(15) == 0
assert foo(10) == 0
x[None] = 0
run()
assert x[None] == 26
@ti.must_throw(AssertionError)
def test_failing_multiple_return():
ti.init(experimental_real_function=True)
x = ti.field(ti.i32, shape=())
@ti.func
def foo(val: ti.i32) -> ti.i32:
if x[None] > 10:
if x[None] > 20:
return 1
x[None] += 1
x[None] += val
return 0
@ti.kernel
def run():
assert foo(15) == 0
assert foo(10) == 0
assert foo(100) == 1
x[None] = 0
run()
assert x[None] == 26
@ti.test(experimental_real_function=True)
def test_python_function():
x = ti.field(ti.i32, shape=())
@ti.func
def inc(val: ti.i32):
x[None] += val
def identity(x):
return x
@ti.data_oriented
class A:
def __init__(self):
self.count = ti.field(ti.i32, shape=())
self.count[None] = 0
@ti.pyfunc
def dec(self, val: ti.i32) -> ti.i32:
self.count[None] += 1
x[None] -= val
return self.count[None]
@ti.kernel
def run(self) -> ti.i32:
a = self.dec(1)
identity(2)
inc(identity(3))
return a
a = A()
x[None] = 0
assert a.run() == 1
assert a.run() == 2
assert x[None] == 4
assert a.dec(4) == 3
assert x[None] == 0
@ti.test(experimental_real_function=True)
def test_templates():
x = ti.field(ti.i32, shape=())
y = ti.field(ti.i32, shape=())
answer = ti.field(ti.i32, shape=8)
@ti.kernel
def kernel_inc(x: ti.template()):
x[None] += 1
def run_kernel():
x[None] = 10
y[None] = 20
kernel_inc(x)
assert x[None] == 11
assert y[None] == 20
kernel_inc(y)
assert x[None] == 11
assert y[None] == 21
@ti.func
def inc(x: ti.template()):
x[None] += 1
@ti.kernel
def run_func():
x[None] = 10
y[None] = 20
inc(x)
answer[0] = x[None]
answer[1] = y[None]
inc(y)
answer[2] = x[None]
answer[3] = y[None]
def verify():
assert answer[0] == 11
assert answer[1] == 20
assert answer[2] == 11
assert answer[3] == 21
run_kernel()
run_func()
verify()