Re: [PATCH 5/5] kunit: decrease macro layering for EQ/NE asserts

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On Fri, Jan 21, 2022 at 2:22 AM David Gow <davidgow@xxxxxxxxxx> wrote:
>
> On Wed, Jan 19, 2022 at 6:35 AM Daniel Latypov <dlatypov@xxxxxxxxxx> wrote:
> >
> > Introduce KUNIT_BINARY_PTR_ASSERTION to match KUNIT_BINARY_INT_ASSERTION
> > and make KUNIT_EXPECT_EQ and KUNIT_EXPECT_PTREQ use these instead of
> > shared intermediate macros that only remove the need to type "==" or
> > "!=".
> >
> > The current macro chain looks like:
> > KUNIT_EXPECT_EQ_MSG => KUNIT_BINARY_EQ_MSG_ASSERTION => KUNIT_BASE_EQ_MSG_ASSERTION => KUNIT_BASE_BINARY_ASSERTION
> > KUNIT_EXPECT_PTR_EQ_MSG => KUNIT_BINARY_PTR_EQ_MSG_ASSERTION => KUNIT_BASE_EQ_MSG_ASSERTION => KUNIT_BASE_BINARY_ASSERTION
> > <ditto for NE and ASSERT>
> >
> > After this change:
> > KUNIT_EXPECT_EQ_MSG => KUNIT_BINARY_INT_ASSERTION => KUNIT_BASE_BINARY_ASSERTION
> > KUNIT_EXPECT_PTR_EQ_MSG => KUNIT_BINARY_PTR_ASSERTION => KUNIT_BASE_BINARY_ASSERTION
> >
> > Signed-off-by: Daniel Latypov <dlatypov@xxxxxxxxxx>
> > ---
>
> This is great: the macros are much simpler and nicer now. In fact,
> this whole series is one of the nicest I've seen for a while: I can't
> think of any serious downsides to any of it.

I agree. I am a fan.

> Reviewed-by: David Gow <davidgow@xxxxxxxxxx>
>
> Thanks,
> -- David
>
>
> >  include/kunit/test.h | 173 ++++++++++++-------------------------------
> >  1 file changed, 49 insertions(+), 124 deletions(-)
> >
> > diff --git a/include/kunit/test.h b/include/kunit/test.h
> > index 48cf520b69ce..bf82c313223b 100644
> > --- a/include/kunit/test.h
> > +++ b/include/kunit/test.h
> > @@ -888,48 +888,6 @@ do {                                                                              \
> >                         ##__VA_ARGS__);                                        \
> >  } while (0)
> >
> > -#define KUNIT_BASE_EQ_MSG_ASSERTION(test,                                     \
> > -                                   assert_class,                              \
> > -                                   ASSERT_CLASS_INIT,                         \
> > -                                   assert_type,                               \
> > -                                   left,                                      \
> > -                                   right,                                     \
> > -                                   fmt,                                       \
> > -                                   ...)                                       \
> > -       KUNIT_BASE_BINARY_ASSERTION(test,                                      \
> > -                                   assert_class,                              \
> > -                                   ASSERT_CLASS_INIT,                         \
> > -                                   assert_type,                               \
> > -                                   left, ==, right,                           \
> > -                                   fmt,                                       \
> > -                                   ##__VA_ARGS__)
> > -
> > -#define KUNIT_BASE_NE_MSG_ASSERTION(test,                                     \
> > -                                   assert_class,                              \
> > -                                   ASSERT_CLASS_INIT,                         \
> > -                                   assert_type,                               \
> > -                                   left,                                      \
> > -                                   right,                                     \
> > -                                   fmt,                                       \
> > -                                   ...)                                       \
> > -       KUNIT_BASE_BINARY_ASSERTION(test,                                      \
> > -                                   assert_class,                              \
> > -                                   ASSERT_CLASS_INIT,                         \
> > -                                   assert_type,                               \
> > -                                   left, !=, right,                           \
> > -                                   fmt,                                       \
> > -                                   ##__VA_ARGS__)
> > -
> > -#define KUNIT_BINARY_EQ_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\
> > -       KUNIT_BASE_EQ_MSG_ASSERTION(test,                                      \
> > -                                   kunit_binary_assert,                       \
> > -                                   KUNIT_INIT_BINARY_ASSERT_STRUCT,           \
> > -                                   assert_type,                               \
> > -                                   left,                                      \
> > -                                   right,                                     \
> > -                                   fmt,                                       \
> > -                                   ##__VA_ARGS__)
> > -
> >  #define KUNIT_BINARY_INT_ASSERTION(test,                                      \
> >                                    assert_type,                                \
> >                                    left,                                       \
> > @@ -945,43 +903,18 @@ do {                                                                             \
> >                                     fmt,                                       \
> >                                     ##__VA_ARGS__)
> >
> > -#define KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test,                                       \
> > -                                         assert_type,                         \
> > -                                         left,                                \
> > -                                         right,                               \
> > -                                         fmt,                                 \
> > -                                         ...)                                 \
> > -       KUNIT_BASE_EQ_MSG_ASSERTION(test,                                      \
> > -                                   kunit_binary_ptr_assert,                   \
> > -                                   KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT,       \
> > -                                   assert_type,                               \
> > -                                   left,                                      \
> > -                                   right,                                     \
> > -                                   fmt,                                       \
> > -                                   ##__VA_ARGS__)
> > -
> > -#define KUNIT_BINARY_NE_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\
> > -       KUNIT_BASE_NE_MSG_ASSERTION(test,                                      \
> > -                                   kunit_binary_assert,                       \
> > -                                   KUNIT_INIT_BINARY_ASSERT_STRUCT,           \
> > -                                   assert_type,                               \
> > -                                   left,                                      \
> > -                                   right,                                     \
> > -                                   fmt,                                       \
> > -                                   ##__VA_ARGS__)
> > -
> > -#define KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test,                                       \
> > -                                         assert_type,                         \
> > -                                         left,                                \
> > -                                         right,                               \
> > -                                         fmt,                                 \
> > -                                         ...)                                 \
> > -       KUNIT_BASE_NE_MSG_ASSERTION(test,                                      \
> > +#define KUNIT_BINARY_PTR_ASSERTION(test,                                      \
> > +                                  assert_type,                                \
> > +                                  left,                                       \
> > +                                  op,                                         \
> > +                                  right,                                      \
> > +                                  fmt,                                        \
> > +                                   ...)                                       \
> > +       KUNIT_BASE_BINARY_ASSERTION(test,                                      \
> >                                     kunit_binary_ptr_assert,                   \
> >                                     KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT,       \
> >                                     assert_type,                               \
> > -                                   left,                                      \
> > -                                   right,                                     \
> > +                                   left, op, right,                           \
> >                                     fmt,                                       \
> >                                     ##__VA_ARGS__)
> >
> > @@ -1082,12 +1015,11 @@ do {                                                                           \
> >         KUNIT_EXPECT_EQ_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_EXPECT_EQ_MSG(test, left, right, fmt, ...)                      \
> > -       KUNIT_BINARY_EQ_MSG_ASSERTION(test,                                    \
> > -                                     KUNIT_EXPECTATION,                       \
> > -                                     left,                                    \
> > -                                     right,                                   \
> > -                                     fmt,                                     \
> > -                                     ##__VA_ARGS__)
> > +       KUNIT_BINARY_INT_ASSERTION(test,                                       \
> > +                                  KUNIT_EXPECTATION,                          \
> > +                                  left, ==, right,                            \
> > +                                  fmt,                                        \
> > +                                   ##__VA_ARGS__)
> >
> >  /**
> >   * KUNIT_EXPECT_PTR_EQ() - Expects that pointers @left and @right are equal.
> > @@ -1104,12 +1036,11 @@ do {                                                                           \
> >         KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, fmt, ...)                  \
> > -       KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test,                                \
> > -                                         KUNIT_EXPECTATION,                   \
> > -                                         left,                                \
> > -                                         right,                               \
> > -                                         fmt,                                 \
> > -                                         ##__VA_ARGS__)
> > +       KUNIT_BINARY_PTR_ASSERTION(test,                                       \
> > +                                  KUNIT_EXPECTATION,                          \
> > +                                  left, ==, right,                            \
> > +                                  fmt,                                        \
> > +                                  ##__VA_ARGS__)
> >
> >  /**
> >   * KUNIT_EXPECT_NE() - An expectation that @left and @right are not equal.
> > @@ -1126,12 +1057,11 @@ do {                                                                           \
> >         KUNIT_EXPECT_NE_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_EXPECT_NE_MSG(test, left, right, fmt, ...)                      \
> > -       KUNIT_BINARY_NE_MSG_ASSERTION(test,                                    \
> > -                                     KUNIT_EXPECTATION,                       \
> > -                                     left,                                    \
> > -                                     right,                                   \
> > -                                     fmt,                                     \
> > -                                     ##__VA_ARGS__)
> > +       KUNIT_BINARY_INT_ASSERTION(test,                                       \
> > +                                  KUNIT_EXPECTATION,                          \
> > +                                  left, !=, right,                            \
> > +                                  fmt,                                        \
> > +                                   ##__VA_ARGS__)
> >
> >  /**
> >   * KUNIT_EXPECT_PTR_NE() - Expects that pointers @left and @right are not equal.
> > @@ -1148,12 +1078,11 @@ do {                                                                           \
> >         KUNIT_EXPECT_PTR_NE_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_EXPECT_PTR_NE_MSG(test, left, right, fmt, ...)                  \
> > -       KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test,                                \
> > -                                         KUNIT_EXPECTATION,                   \
> > -                                         left,                                \
> > -                                         right,                               \
> > -                                         fmt,                                 \
> > -                                         ##__VA_ARGS__)
> > +       KUNIT_BINARY_PTR_ASSERTION(test,                                       \
> > +                                  KUNIT_EXPECTATION,                          \
> > +                                  left, !=, right,                            \
> > +                                  fmt,                                        \
> > +                                  ##__VA_ARGS__)
> >
> >  /**
> >   * KUNIT_EXPECT_LT() - An expectation that @left is less than @right.
> > @@ -1358,12 +1287,11 @@ do {                                                                           \
> >         KUNIT_ASSERT_EQ_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_ASSERT_EQ_MSG(test, left, right, fmt, ...)                      \
> > -       KUNIT_BINARY_EQ_MSG_ASSERTION(test,                                    \
> > -                                     KUNIT_ASSERTION,                         \
> > -                                     left,                                    \
> > -                                     right,                                   \
> > -                                     fmt,                                     \
> > -                                     ##__VA_ARGS__)
> > +       KUNIT_BINARY_INT_ASSERTION(test,                                       \
> > +                                  KUNIT_ASSERTION,                            \
> > +                                  left, ==, right,                            \
> > +                                  fmt,                                        \
> > +                                   ##__VA_ARGS__)
> >
> >  /**
> >   * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
> > @@ -1379,12 +1307,11 @@ do {                                                                           \
> >         KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, fmt, ...)                  \
> > -       KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test,                                \
> > -                                         KUNIT_ASSERTION,                     \
> > -                                         left,                                \
> > -                                         right,                               \
> > -                                         fmt,                                 \
> > -                                         ##__VA_ARGS__)
> > +       KUNIT_BINARY_PTR_ASSERTION(test,                                       \
> > +                                  KUNIT_ASSERTION,                            \
> > +                                  left, ==, right,                            \
> > +                                  fmt,                                        \
> > +                                  ##__VA_ARGS__)
> >
> >  /**
> >   * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal.
> > @@ -1400,12 +1327,11 @@ do {                                                                           \
> >         KUNIT_ASSERT_NE_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_ASSERT_NE_MSG(test, left, right, fmt, ...)                      \
> > -       KUNIT_BINARY_NE_MSG_ASSERTION(test,                                    \
> > -                                     KUNIT_ASSERTION,                         \
> > -                                     left,                                    \
> > -                                     right,                                   \
> > -                                     fmt,                                     \
> > -                                     ##__VA_ARGS__)
> > +       KUNIT_BINARY_INT_ASSERTION(test,                                       \
> > +                                  KUNIT_ASSERTION,                            \
> > +                                  left, !=, right,                            \
> > +                                  fmt,                                        \
> > +                                   ##__VA_ARGS__)
> >
> >  /**
> >   * KUNIT_ASSERT_PTR_NE() - Asserts that pointers @left and @right are not equal.
> > @@ -1422,12 +1348,11 @@ do {                                                                           \
> >         KUNIT_ASSERT_PTR_NE_MSG(test, left, right, NULL)
> >
> >  #define KUNIT_ASSERT_PTR_NE_MSG(test, left, right, fmt, ...)                  \
> > -       KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test,                                \
> > -                                         KUNIT_ASSERTION,                     \
> > -                                         left,                                \
> > -                                         right,                               \
> > -                                         fmt,                                 \
> > -                                         ##__VA_ARGS__)
> > +       KUNIT_BINARY_PTR_ASSERTION(test,                                       \
> > +                                  KUNIT_ASSERTION,                            \
> > +                                  left, !=, right,                            \
> > +                                  fmt,                                        \
> > +                                  ##__VA_ARGS__)
> >  /**
> >   * KUNIT_ASSERT_LT() - An assertion that @left is less than @right.
> >   * @test: The test context object.
> > --
> > 2.34.1.703.g22d0c6ccf7-goog
> >



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