tests/python/testing/test_tvm_testing_before_after.py

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import tvm
import tvm.testing
from tvm.script import ir_module
from tvm.script import tirx as T


def test_before_after_prim_func():
    @T.prim_func(private=True)
    def before():
        T.evaluate(0)

    expected = before

    mod = tvm.IRModule.from_expr(before)
    # Identity transform (no-op)
    mod = (lambda x: x)(mod)
    tvm.ir.assert_structural_equal(mod["main"], expected)


def test_before_after_method():
    @T.prim_func(private=True)
    def before():
        T.evaluate(0)

    expected = before

    mod = tvm.IRModule.from_expr(before)
    # Identity transform (no-op)
    mod = (lambda x: x)(mod)
    tvm.ir.assert_structural_equal(mod["main"], expected)


def test_before_after_fixture():
    @T.prim_func(private=True)
    def before():
        T.evaluate(0)

    expected = before

    mod = tvm.IRModule.from_expr(before)
    # Identity transform (no-op)
    mod = (lambda x: x)(mod)
    tvm.ir.assert_structural_equal(mod["main"], expected)


def test_before_after_delayed_prim_func():
    @T.prim_func(private=True)
    def before():
        T.evaluate(0)

    expected = before

    mod = tvm.IRModule.from_expr(before)
    # Identity transform (no-op)
    mod = (lambda x: x)(mod)
    tvm.ir.assert_structural_equal(mod["main"], expected)


def test_before_after_parametrized_fixture():
    """Test with different buffer sizes"""
    for n in [1, 8, 16]:

        @T.prim_func(private=True)
        def before(A: T.Buffer(n, "float32")):
            for i in T.serial(n):
                A[i] = 0.0

        expected = before

        mod = tvm.IRModule.from_expr(before)
        # Identity transform (no-op)
        mod = (lambda x: x)(mod)
        tvm.ir.assert_structural_equal(mod["main"], expected)


def test_before_after_ir_module():
    """The preferred form for writing TIR unit tests

    All evaluation is done at test-time, with the minimal amount of
    additional lines.
    """

    @ir_module
    class before:
        @T.prim_func(private=True)
        def func_A(A: T.Buffer(16, "float32")):
            for i in T.serial(16):
                A[i] = 0.0

        @T.prim_func(private=True)
        def func_B(A: T.Buffer(16, "int32")):
            for i in T.serial(16):
                A[i] = 42

    expected = before

    # Identity transform (no-op)
    mod = (lambda x: x)(before)
    tvm.ir.assert_structural_equal(mod, expected)


def test_before_after_ir_module_explicit_fixture():
    """Like test_before_after_ir_module, but with an explicit fixture

    If the IRModule depends on additional fixtures, this form can be
    used.
    """

    @ir_module
    class before:
        @T.prim_func(private=True)
        def func_A(A: T.Buffer(16, "float32")):
            for i in T.serial(16):
                A[i] = 0.0

        @T.prim_func(private=True)
        def func_B(A: T.Buffer(16, "int32")):
            for i in T.serial(16):
                A[i] = 42

    expected = before

    # Identity transform (no-op)
    mod = (lambda x: x)(before)
    tvm.ir.assert_structural_equal(mod, expected)


if __name__ == "__main__":
    tvm.testing.main()