lib: kunit: add test_min_heap test conversion to KUnit
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Message ID 20200729201146.537433-1-vitor@massaru.org
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  • lib: kunit: add test_min_heap test conversion to KUnit
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Vitor Massaru Iha July 29, 2020, 8:11 p.m. UTC
This adds the conversion of the runtime tests of test_min_heap,
from `lib/test_min_heap.c` to KUnit tests.

Please apply this commit first (linux-kselftest/kunit-fixes):
3f37d14b8a3152441f36b6bc74000996679f0998 kunit: kunit_config: Fix parsing of CONFIG options with space

Signed-off-by: Vitor Massaru Iha <vitor@massaru.org>
---
 lib/Kconfig.debug                         |  29 ++++--
 lib/Makefile                              |   2 +-
 lib/{test_min_heap.c => min_heap_kunit.c} | 117 ++++++++++++----------
 3 files changed, 83 insertions(+), 65 deletions(-)
 rename lib/{test_min_heap.c => min_heap_kunit.c} (60%)


base-commit: d43c7fb05765152d4d4a39a8ef957c4ea14d8847
--
2.26.2

Comments

Peter Zijlstra July 29, 2020, 8:39 p.m. UTC | #1
On Wed, Jul 29, 2020 at 05:11:46PM -0300, Vitor Massaru Iha wrote:
> This adds the conversion of the runtime tests of test_min_heap,
> from `lib/test_min_heap.c` to KUnit tests.
> 
> Please apply this commit first (linux-kselftest/kunit-fixes):
> 3f37d14b8a3152441f36b6bc74000996679f0998 kunit: kunit_config: Fix parsing of CONFIG options with space
> 
> Signed-off-by: Vitor Massaru Iha <vitor@massaru.org>
> ---
>  lib/Kconfig.debug                         |  29 ++++--
>  lib/Makefile                              |   2 +-
>  lib/{test_min_heap.c => min_heap_kunit.c} | 117 ++++++++++++----------
>  3 files changed, 83 insertions(+), 65 deletions(-)
>  rename lib/{test_min_heap.c => min_heap_kunit.c} (60%)

So where's the win? What's KUnit, why should I care and more lines.
Vitor Massaru Iha July 29, 2020, 9:57 p.m. UTC | #2
Hi Peter,

On Wed, Jul 29, 2020 at 5:39 PM <peterz@infradead.org> wrote:
>
> On Wed, Jul 29, 2020 at 05:11:46PM -0300, Vitor Massaru Iha wrote:
> > This adds the conversion of the runtime tests of test_min_heap,
> > from `lib/test_min_heap.c` to KUnit tests.
> >
> > Please apply this commit first (linux-kselftest/kunit-fixes):
> > 3f37d14b8a3152441f36b6bc74000996679f0998 kunit: kunit_config: Fix parsing of CONFIG options with space
> >
> > Signed-off-by: Vitor Massaru Iha <vitor@massaru.org>
> > ---
> >  lib/Kconfig.debug                         |  29 ++++--
> >  lib/Makefile                              |   2 +-
> >  lib/{test_min_heap.c => min_heap_kunit.c} | 117 ++++++++++++----------
> >  3 files changed, 83 insertions(+), 65 deletions(-)
> >  rename lib/{test_min_heap.c => min_heap_kunit.c} (60%)
>
> So where's the win? What's KUnit, why should I care and more lines.

KUnit is a unit testing and mocking framework for the Linux kernel. [0]

In Kconfig.debug you only have some more information about KUnit.

If the number of lines is a parameter that should be considered, I can
change sections like this

-                       if (last > values[0]) {
-                               pr_err("error: expected %d <= %d\n", last,
-                                       values[0]);
-                               err++;
-                       }
+                       KUNIT_EXPECT_FALSE_MSG(context,
+                                              last > values[0],
+                                              "expected %d <= %d\n",
+                                              last, values[0]);

To this:

-                       if (last > values[0]) {
-                               pr_err("error: expected %d <= %d\n", last,
-                                       values[0]);
-                               err++;
-                       }
+                       KUNIT_EXPECT_FALSE_MSG(context, last >
values[0],  "expected %d <= %d\n",  last, values[0]);

And from this:

+static struct kunit_case __refdata min_heap_test_cases[] = {
+       KUNIT_CASE(test_heapify_all_true),
+       KUNIT_CASE(test_heapify_all_false),
+       KUNIT_CASE(test_heap_push_true),
+       KUNIT_CASE(test_heap_push_false),
+       KUNIT_CASE(test_heap_pop_push_true),
+       KUNIT_CASE(test_heap_pop_push_false),
+       {}

To this:

+static struct kunit_case __refdata min_heap_test_cases[] = {
+       KUNIT_CASE(test_min_heap),
+       {}

I did the latter this way to be more informative, but if the goal is
to reduce lines of code, this is possible.

The results can be seen this way:

This is an excerpt from the test.log with the result in TAP format:
[snip]
ok 5 - example
    # Subtest: min-heap
    1..6
    ok 1 - test_heapify_all_true
    ok 2 - test_heapify_all_false
    ok 3 - test_heap_push_true
    ok 4 - test_heap_push_false
    ok 5 - test_heap_pop_push_true
    ok 6 - test_heap_pop_push_false
[snip]

And this from kunit-tool:
[snip]
[18:43:32] ============================================================
[18:43:32] ======== [PASSED] min-heap ========
[18:43:32] [PASSED] test_heapify_all_true
[18:43:32] [PASSED] test_heapify_all_false
[18:43:32] [PASSED] test_heap_push_true
[18:43:32] [PASSED] test_heap_push_false
[18:43:32] [PASSED] test_heap_pop_push_true
[18:43:32] [PASSED] test_heap_pop_push_false
[18:43:32] ============================================================
[18:43:32] Testing complete. 20 tests run. 0 failed. 0 crashed.
[18:43:32] Elapsed time: 9.758s total, 0.001s configuring, 6.012s
building, 0.000s running
[snip]

BR,
Vitor

[0] https://www.kernel.org/doc/html/latest/dev-tools/kunit/index.html#what-is-kunit
Ian Rogers July 29, 2020, 10:56 p.m. UTC | #3
On Wed, Jul 29, 2020 at 1:11 PM Vitor Massaru Iha <vitor@massaru.org> wrote:
>
> This adds the conversion of the runtime tests of test_min_heap,
> from `lib/test_min_heap.c` to KUnit tests.
>
> Please apply this commit first (linux-kselftest/kunit-fixes):
> 3f37d14b8a3152441f36b6bc74000996679f0998 kunit: kunit_config: Fix parsing of CONFIG options with space

Thanks for this, I'm a fan of testing frameworks :-)

> Signed-off-by: Vitor Massaru Iha <vitor@massaru.org>
> ---
>  lib/Kconfig.debug                         |  29 ++++--
>  lib/Makefile                              |   2 +-
>  lib/{test_min_heap.c => min_heap_kunit.c} | 117 ++++++++++++----------
>  3 files changed, 83 insertions(+), 65 deletions(-)
>  rename lib/{test_min_heap.c => min_heap_kunit.c} (60%)
>
> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> index 9ad9210d70a1..46674fc4972c 100644
> --- a/lib/Kconfig.debug
> +++ b/lib/Kconfig.debug
> @@ -1864,16 +1864,6 @@ config TEST_LIST_SORT
>
>           If unsure, say N.
>
> -config TEST_MIN_HEAP
> -       tristate "Min heap test"
> -       depends on DEBUG_KERNEL || m
> -       help
> -         Enable this to turn on min heap function tests. This test is
> -         executed only once during system boot (so affects only boot time),
> -         or at module load time.
> -
> -         If unsure, say N.
> -
>  config TEST_SORT
>         tristate "Array-based sort test"
>         depends on DEBUG_KERNEL || m
> @@ -2185,6 +2175,25 @@ config LINEAR_RANGES_TEST
>
>           If unsure, say N.
>
> +config MIN_HEAP_KUNIT
> +        tristate "KUnit test for Min heap"
> +        depends on KUNIT
> +        depends on DEBUG_KERNEL || m
> +        help
> +          Enable this to turn on min heap function tests. This test is
> +          executed only once during system boot (so affects only boot time),
> +          or at module load time.
> +
> +          KUnit tests run during boot and output the results to the debug log
> +          in TAP format (http://testanything.org/). Only useful for kernel devs
> +          running the KUnit test harness, and not intended for inclusion into a
> +          production build.
> +
> +          For more information on KUnit and unit tests in general please refer
> +          to the KUnit documentation in Documentation/dev-tools/kunit/.
> +
> +          If unsure, say N.
> +

It's a shame we need a config option for this. Could we have one
option to cover all basic library tests?

>  config TEST_UDELAY
>         tristate "udelay test driver"
>         help
> diff --git a/lib/Makefile b/lib/Makefile
> index b1c42c10073b..748f57063160 100644
> --- a/lib/Makefile
> +++ b/lib/Makefile
> @@ -72,7 +72,6 @@ CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla)
>  UBSAN_SANITIZE_test_ubsan.o := y
>  obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
>  obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
> -obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
>  obj-$(CONFIG_TEST_LKM) += test_module.o
>  obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
>  obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o
> @@ -318,3 +317,4 @@ obj-$(CONFIG_OBJAGG) += objagg.o
>  # KUnit tests
>  obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
>  obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
> +obj-$(CONFIG_MIN_HEAP_KUNIT) += min_heap_kunit.o
> diff --git a/lib/test_min_heap.c b/lib/min_heap_kunit.c
> similarity index 60%
> rename from lib/test_min_heap.c
> rename to lib/min_heap_kunit.c
> index d19c8080fd4d..398db1c63146 100644
> --- a/lib/test_min_heap.c
> +++ b/lib/min_heap_kunit.c
> @@ -7,9 +7,8 @@
>
>  #include <linux/log2.h>
>  #include <linux/min_heap.h>
> -#include <linux/module.h>
> -#include <linux/printk.h>
>  #include <linux/random.h>
> +#include <kunit/test.h>
>
>  static __init bool less_than(const void *lhs, const void *rhs)
>  {
> @@ -29,37 +28,34 @@ static __init void swap_ints(void *lhs, void *rhs)
>         *(int *)rhs = temp;
>  }
>
> -static __init int pop_verify_heap(bool min_heap,
> +static __init void pop_verify_heap(struct kunit *context,
> +                               bool min_heap,
>                                 struct min_heap *heap,
>                                 const struct min_heap_callbacks *funcs)
>  {
>         int *values = heap->data;
> -       int err = 0;
>         int last;
>
>         last = values[0];
>         min_heap_pop(heap, funcs);
>         while (heap->nr > 0) {
>                 if (min_heap) {
> -                       if (last > values[0]) {
> -                               pr_err("error: expected %d <= %d\n", last,
> -                                       values[0]);
> -                               err++;
> -                       }
> +                       KUNIT_EXPECT_FALSE_MSG(context,
> +                                              last > values[0],
> +                                              "expected %d <= %d\n",
> +                                              last, values[0]);

I'm not familiar with kunit, is there a reason not to prefer:
KUNIT_EXPECT_LT(context, last, values[0]);

>                 } else {
> -                       if (last < values[0]) {
> -                               pr_err("error: expected %d >= %d\n", last,
> -                                       values[0]);
> -                               err++;
> -                       }
> +                       KUNIT_EXPECT_FALSE_MSG(context,
> +                                              last < values[0],
> +                                              "expected %d >= %d\n",
> +                                              last, values[0]);

Similarly KUNIT_EXPECT_GT.

Thanks,
Ian

>                 }
>                 last = values[0];
>                 min_heap_pop(heap, funcs);
>         }
> -       return err;
>  }
>
> -static __init int test_heapify_all(bool min_heap)
> +static __init void test_heapify_all(struct kunit *context, bool min_heap)
>  {
>         int values[] = { 3, 1, 2, 4, 0x8000000, 0x7FFFFFF, 0,
>                          -3, -1, -2, -4, 0x8000000, 0x7FFFFFF };
> @@ -73,12 +69,11 @@ static __init int test_heapify_all(bool min_heap)
>                 .less = min_heap ? less_than : greater_than,
>                 .swp = swap_ints,
>         };
> -       int i, err;
> +       int i;
>
>         /* Test with known set of values. */
>         min_heapify_all(&heap, &funcs);
> -       err = pop_verify_heap(min_heap, &heap, &funcs);
> -
> +       pop_verify_heap(context, min_heap, &heap, &funcs);
>
>         /* Test with randomly generated values. */
>         heap.nr = ARRAY_SIZE(values);
> @@ -86,12 +81,10 @@ static __init int test_heapify_all(bool min_heap)
>                 values[i] = get_random_int();
>
>         min_heapify_all(&heap, &funcs);
> -       err += pop_verify_heap(min_heap, &heap, &funcs);
> -
> -       return err;
> +       pop_verify_heap(context, min_heap, &heap, &funcs);
>  }
>
> -static __init int test_heap_push(bool min_heap)
> +static __init void test_heap_push(struct kunit *context, bool min_heap)
>  {
>         const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
>                              -3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
> @@ -106,25 +99,22 @@ static __init int test_heap_push(bool min_heap)
>                 .less = min_heap ? less_than : greater_than,
>                 .swp = swap_ints,
>         };
> -       int i, temp, err;
> +       int i, temp;
>
>         /* Test with known set of values copied from data. */
>         for (i = 0; i < ARRAY_SIZE(data); i++)
>                 min_heap_push(&heap, &data[i], &funcs);
> -
> -       err = pop_verify_heap(min_heap, &heap, &funcs);
> +       pop_verify_heap(context, min_heap, &heap, &funcs);
>
>         /* Test with randomly generated values. */
>         while (heap.nr < heap.size) {
>                 temp = get_random_int();
>                 min_heap_push(&heap, &temp, &funcs);
>         }
> -       err += pop_verify_heap(min_heap, &heap, &funcs);
> -
> -       return err;
> +       pop_verify_heap(context, min_heap, &heap, &funcs);
>  }
>
> -static __init int test_heap_pop_push(bool min_heap)
> +static __init void test_heap_pop_push(struct kunit *context, bool min_heap)
>  {
>         const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
>                              -3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
> @@ -139,7 +129,7 @@ static __init int test_heap_pop_push(bool min_heap)
>                 .less = min_heap ? less_than : greater_than,
>                 .swp = swap_ints,
>         };
> -       int i, temp, err;
> +       int i, temp;
>
>         /* Fill values with data to pop and replace. */
>         temp = min_heap ? 0x80000000 : 0x7FFFFFFF;
> @@ -149,8 +139,7 @@ static __init int test_heap_pop_push(bool min_heap)
>         /* Test with known set of values copied from data. */
>         for (i = 0; i < ARRAY_SIZE(data); i++)
>                 min_heap_pop_push(&heap, &data[i], &funcs);
> -
> -       err = pop_verify_heap(min_heap, &heap, &funcs);
> +       pop_verify_heap(context, min_heap, &heap, &funcs);
>
>         heap.nr = 0;
>         for (i = 0; i < ARRAY_SIZE(data); i++)
> @@ -161,34 +150,54 @@ static __init int test_heap_pop_push(bool min_heap)
>                 temp = get_random_int();
>                 min_heap_pop_push(&heap, &temp, &funcs);
>         }
> -       err += pop_verify_heap(min_heap, &heap, &funcs);
> +       pop_verify_heap(context, min_heap, &heap, &funcs);
> +}
>
> -       return err;
> +static void __init test_heapify_all_true(struct kunit *context)
> +{
> +       test_heapify_all(context, true);
>  }
>
> -static int __init test_min_heap_init(void)
> +static void __init test_heapify_all_false(struct kunit *context)
>  {
> -       int err = 0;
> -
> -       err += test_heapify_all(true);
> -       err += test_heapify_all(false);
> -       err += test_heap_push(true);
> -       err += test_heap_push(false);
> -       err += test_heap_pop_push(true);
> -       err += test_heap_pop_push(false);
> -       if (err) {
> -               pr_err("test failed with %d errors\n", err);
> -               return -EINVAL;
> -       }
> -       pr_info("test passed\n");
> -       return 0;
> +       test_heapify_all(context, true);
> +}
> +
> +static void __init test_heap_push_true(struct kunit *context)
> +{
> +       test_heap_push(context, true);
> +}
> +
> +static void __init test_heap_push_false(struct kunit *context)
> +{
> +       test_heap_push(context, false);
>  }
> -module_init(test_min_heap_init);
>
> -static void __exit test_min_heap_exit(void)
> +static void __init test_heap_pop_push_true(struct kunit *context)
>  {
> -       /* do nothing */
> +       test_heap_pop_push(context, true);
>  }
> -module_exit(test_min_heap_exit);
> +
> +static void __init test_heap_pop_push_false(struct kunit *context)
> +{
> +       test_heap_pop_push(context, false);
> +}
> +
> +static struct kunit_case __refdata min_heap_test_cases[] = {
> +       KUNIT_CASE(test_heapify_all_true),
> +       KUNIT_CASE(test_heapify_all_false),
> +       KUNIT_CASE(test_heap_push_true),
> +       KUNIT_CASE(test_heap_push_false),
> +       KUNIT_CASE(test_heap_pop_push_true),
> +       KUNIT_CASE(test_heap_pop_push_false),
> +       {}
> +};
> +
> +static struct kunit_suite min_heap_test_suite = {
> +       .name = "min-heap",
> +       .test_cases = min_heap_test_cases,
> +};
> +
> +kunit_test_suites(&min_heap_test_suite);
>
>  MODULE_LICENSE("GPL");
>
> base-commit: d43c7fb05765152d4d4a39a8ef957c4ea14d8847
> --
> 2.26.2
>
Vitor Massaru Iha July 29, 2020, 11:12 p.m. UTC | #4
Hi Ian,

On Wed, Jul 29, 2020 at 7:57 PM 'Ian Rogers' via KUnit Development
<kunit-dev@googlegroups.com> wrote:
>
> On Wed, Jul 29, 2020 at 1:11 PM Vitor Massaru Iha <vitor@massaru.org> wrote:
> >
> > This adds the conversion of the runtime tests of test_min_heap,
> > from `lib/test_min_heap.c` to KUnit tests.
> >
> > Please apply this commit first (linux-kselftest/kunit-fixes):
> > 3f37d14b8a3152441f36b6bc74000996679f0998 kunit: kunit_config: Fix parsing of CONFIG options with space
>
> Thanks for this, I'm a fan of testing frameworks :-)
>
> > Signed-off-by: Vitor Massaru Iha <vitor@massaru.org>
> > ---
> >  lib/Kconfig.debug                         |  29 ++++--
> >  lib/Makefile                              |   2 +-
> >  lib/{test_min_heap.c => min_heap_kunit.c} | 117 ++++++++++++----------
> >  3 files changed, 83 insertions(+), 65 deletions(-)
> >  rename lib/{test_min_heap.c => min_heap_kunit.c} (60%)
> >
> > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> > index 9ad9210d70a1..46674fc4972c 100644
> > --- a/lib/Kconfig.debug
> > +++ b/lib/Kconfig.debug
> > @@ -1864,16 +1864,6 @@ config TEST_LIST_SORT
> >
> >           If unsure, say N.
> >
> > -config TEST_MIN_HEAP
> > -       tristate "Min heap test"
> > -       depends on DEBUG_KERNEL || m
> > -       help
> > -         Enable this to turn on min heap function tests. This test is
> > -         executed only once during system boot (so affects only boot time),
> > -         or at module load time.
> > -
> > -         If unsure, say N.
> > -
> >  config TEST_SORT
> >         tristate "Array-based sort test"
> >         depends on DEBUG_KERNEL || m
> > @@ -2185,6 +2175,25 @@ config LINEAR_RANGES_TEST
> >
> >           If unsure, say N.
> >
> > +config MIN_HEAP_KUNIT
> > +        tristate "KUnit test for Min heap"
> > +        depends on KUNIT
> > +        depends on DEBUG_KERNEL || m
> > +        help
> > +          Enable this to turn on min heap function tests. This test is
> > +          executed only once during system boot (so affects only boot time),
> > +          or at module load time.
> > +
> > +          KUnit tests run during boot and output the results to the debug log
> > +          in TAP format (http://testanything.org/). Only useful for kernel devs
> > +          running the KUnit test harness, and not intended for inclusion into a
> > +          production build.
> > +
> > +          For more information on KUnit and unit tests in general please refer
> > +          to the KUnit documentation in Documentation/dev-tools/kunit/.
> > +
> > +          If unsure, say N.
> > +
>
> It's a shame we need a config option for this. Could we have one
> option to cover all basic library tests?

Sure, I think so.

>
> >  config TEST_UDELAY
> >         tristate "udelay test driver"
> >         help
> > diff --git a/lib/Makefile b/lib/Makefile
> > index b1c42c10073b..748f57063160 100644
> > --- a/lib/Makefile
> > +++ b/lib/Makefile
> > @@ -72,7 +72,6 @@ CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla)
> >  UBSAN_SANITIZE_test_ubsan.o := y
> >  obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
> >  obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
> > -obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
> >  obj-$(CONFIG_TEST_LKM) += test_module.o
> >  obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
> >  obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o
> > @@ -318,3 +317,4 @@ obj-$(CONFIG_OBJAGG) += objagg.o
> >  # KUnit tests
> >  obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
> >  obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
> > +obj-$(CONFIG_MIN_HEAP_KUNIT) += min_heap_kunit.o
> > diff --git a/lib/test_min_heap.c b/lib/min_heap_kunit.c
> > similarity index 60%
> > rename from lib/test_min_heap.c
> > rename to lib/min_heap_kunit.c
> > index d19c8080fd4d..398db1c63146 100644
> > --- a/lib/test_min_heap.c
> > +++ b/lib/min_heap_kunit.c
> > @@ -7,9 +7,8 @@
> >
> >  #include <linux/log2.h>
> >  #include <linux/min_heap.h>
> > -#include <linux/module.h>
> > -#include <linux/printk.h>
> >  #include <linux/random.h>
> > +#include <kunit/test.h>
> >
> >  static __init bool less_than(const void *lhs, const void *rhs)
> >  {
> > @@ -29,37 +28,34 @@ static __init void swap_ints(void *lhs, void *rhs)
> >         *(int *)rhs = temp;
> >  }
> >
> > -static __init int pop_verify_heap(bool min_heap,
> > +static __init void pop_verify_heap(struct kunit *context,
> > +                               bool min_heap,
> >                                 struct min_heap *heap,
> >                                 const struct min_heap_callbacks *funcs)
> >  {
> >         int *values = heap->data;
> > -       int err = 0;
> >         int last;
> >
> >         last = values[0];
> >         min_heap_pop(heap, funcs);
> >         while (heap->nr > 0) {
> >                 if (min_heap) {
> > -                       if (last > values[0]) {
> > -                               pr_err("error: expected %d <= %d\n", last,
> > -                                       values[0]);
> > -                               err++;
> > -                       }
> > +                       KUNIT_EXPECT_FALSE_MSG(context,
> > +                                              last > values[0],
> > +                                              "expected %d <= %d\n",
> > +                                              last, values[0]);
>
> I'm not familiar with kunit, is there a reason not to prefer:
> KUNIT_EXPECT_LT(context, last, values[0]);

Nope. I will fix this and the other one that you pointed down below.

Thanks!

>
> >                 } else {
> > -                       if (last < values[0]) {
> > -                               pr_err("error: expected %d >= %d\n", last,
> > -                                       values[0]);
> > -                               err++;
> > -                       }
> > +                       KUNIT_EXPECT_FALSE_MSG(context,
> > +                                              last < values[0],
> > +                                              "expected %d >= %d\n",
> > +                                              last, values[0]);
>
> Similarly KUNIT_EXPECT_GT.
>
> Thanks,
> Ian
>
> >                 }
> >                 last = values[0];
> >                 min_heap_pop(heap, funcs);
> >         }
> > -       return err;
> >  }
> >
> > -static __init int test_heapify_all(bool min_heap)
> > +static __init void test_heapify_all(struct kunit *context, bool min_heap)
> >  {
> >         int values[] = { 3, 1, 2, 4, 0x8000000, 0x7FFFFFF, 0,
> >                          -3, -1, -2, -4, 0x8000000, 0x7FFFFFF };
> > @@ -73,12 +69,11 @@ static __init int test_heapify_all(bool min_heap)
> >                 .less = min_heap ? less_than : greater_than,
> >                 .swp = swap_ints,
> >         };
> > -       int i, err;
> > +       int i;
> >
> >         /* Test with known set of values. */
> >         min_heapify_all(&heap, &funcs);
> > -       err = pop_verify_heap(min_heap, &heap, &funcs);
> > -
> > +       pop_verify_heap(context, min_heap, &heap, &funcs);
> >
> >         /* Test with randomly generated values. */
> >         heap.nr = ARRAY_SIZE(values);
> > @@ -86,12 +81,10 @@ static __init int test_heapify_all(bool min_heap)
> >                 values[i] = get_random_int();
> >
> >         min_heapify_all(&heap, &funcs);
> > -       err += pop_verify_heap(min_heap, &heap, &funcs);
> > -
> > -       return err;
> > +       pop_verify_heap(context, min_heap, &heap, &funcs);
> >  }
> >
> > -static __init int test_heap_push(bool min_heap)
> > +static __init void test_heap_push(struct kunit *context, bool min_heap)
> >  {
> >         const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
> >                              -3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
> > @@ -106,25 +99,22 @@ static __init int test_heap_push(bool min_heap)
> >                 .less = min_heap ? less_than : greater_than,
> >                 .swp = swap_ints,
> >         };
> > -       int i, temp, err;
> > +       int i, temp;
> >
> >         /* Test with known set of values copied from data. */
> >         for (i = 0; i < ARRAY_SIZE(data); i++)
> >                 min_heap_push(&heap, &data[i], &funcs);
> > -
> > -       err = pop_verify_heap(min_heap, &heap, &funcs);
> > +       pop_verify_heap(context, min_heap, &heap, &funcs);
> >
> >         /* Test with randomly generated values. */
> >         while (heap.nr < heap.size) {
> >                 temp = get_random_int();
> >                 min_heap_push(&heap, &temp, &funcs);
> >         }
> > -       err += pop_verify_heap(min_heap, &heap, &funcs);
> > -
> > -       return err;
> > +       pop_verify_heap(context, min_heap, &heap, &funcs);
> >  }
> >
> > -static __init int test_heap_pop_push(bool min_heap)
> > +static __init void test_heap_pop_push(struct kunit *context, bool min_heap)
> >  {
> >         const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
> >                              -3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
> > @@ -139,7 +129,7 @@ static __init int test_heap_pop_push(bool min_heap)
> >                 .less = min_heap ? less_than : greater_than,
> >                 .swp = swap_ints,
> >         };
> > -       int i, temp, err;
> > +       int i, temp;
> >
> >         /* Fill values with data to pop and replace. */
> >         temp = min_heap ? 0x80000000 : 0x7FFFFFFF;
> > @@ -149,8 +139,7 @@ static __init int test_heap_pop_push(bool min_heap)
> >         /* Test with known set of values copied from data. */
> >         for (i = 0; i < ARRAY_SIZE(data); i++)
> >                 min_heap_pop_push(&heap, &data[i], &funcs);
> > -
> > -       err = pop_verify_heap(min_heap, &heap, &funcs);
> > +       pop_verify_heap(context, min_heap, &heap, &funcs);
> >
> >         heap.nr = 0;
> >         for (i = 0; i < ARRAY_SIZE(data); i++)
> > @@ -161,34 +150,54 @@ static __init int test_heap_pop_push(bool min_heap)
> >                 temp = get_random_int();
> >                 min_heap_pop_push(&heap, &temp, &funcs);
> >         }
> > -       err += pop_verify_heap(min_heap, &heap, &funcs);
> > +       pop_verify_heap(context, min_heap, &heap, &funcs);
> > +}
> >
> > -       return err;
> > +static void __init test_heapify_all_true(struct kunit *context)
> > +{
> > +       test_heapify_all(context, true);
> >  }
> >
> > -static int __init test_min_heap_init(void)
> > +static void __init test_heapify_all_false(struct kunit *context)
> >  {
> > -       int err = 0;
> > -
> > -       err += test_heapify_all(true);
> > -       err += test_heapify_all(false);
> > -       err += test_heap_push(true);
> > -       err += test_heap_push(false);
> > -       err += test_heap_pop_push(true);
> > -       err += test_heap_pop_push(false);
> > -       if (err) {
> > -               pr_err("test failed with %d errors\n", err);
> > -               return -EINVAL;
> > -       }
> > -       pr_info("test passed\n");
> > -       return 0;
> > +       test_heapify_all(context, true);
> > +}
> > +
> > +static void __init test_heap_push_true(struct kunit *context)
> > +{
> > +       test_heap_push(context, true);
> > +}
> > +
> > +static void __init test_heap_push_false(struct kunit *context)
> > +{
> > +       test_heap_push(context, false);
> >  }
> > -module_init(test_min_heap_init);
> >
> > -static void __exit test_min_heap_exit(void)
> > +static void __init test_heap_pop_push_true(struct kunit *context)
> >  {
> > -       /* do nothing */
> > +       test_heap_pop_push(context, true);
> >  }
> > -module_exit(test_min_heap_exit);
> > +
> > +static void __init test_heap_pop_push_false(struct kunit *context)
> > +{
> > +       test_heap_pop_push(context, false);
> > +}
> > +
> > +static struct kunit_case __refdata min_heap_test_cases[] = {
> > +       KUNIT_CASE(test_heapify_all_true),
> > +       KUNIT_CASE(test_heapify_all_false),
> > +       KUNIT_CASE(test_heap_push_true),
> > +       KUNIT_CASE(test_heap_push_false),
> > +       KUNIT_CASE(test_heap_pop_push_true),
> > +       KUNIT_CASE(test_heap_pop_push_false),
> > +       {}
> > +};
> > +
> > +static struct kunit_suite min_heap_test_suite = {
> > +       .name = "min-heap",
> > +       .test_cases = min_heap_test_cases,
> > +};
> > +
> > +kunit_test_suites(&min_heap_test_suite);
> >
> >  MODULE_LICENSE("GPL");
> >
> > base-commit: d43c7fb05765152d4d4a39a8ef957c4ea14d8847
> > --
> > 2.26.2
> >
>
> --
> You received this message because you are subscribed to the Google Groups "KUnit Development" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to kunit-dev+unsubscribe@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/kunit-dev/CAP-5%3DfWCMPyBYqn4p%2B_%3DRa5_sXqUbr4h_OCuYS4iY-6fsnevvA%40mail.gmail.com.
Peter Zijlstra Aug. 4, 2020, 1:25 p.m. UTC | #5
On Wed, Jul 29, 2020 at 06:57:17PM -0300, Vitor Massaru Iha wrote:

> The results can be seen this way:
> 
> This is an excerpt from the test.log with the result in TAP format:
> [snip]
> ok 5 - example
>     # Subtest: min-heap
>     1..6
>     ok 1 - test_heapify_all_true
>     ok 2 - test_heapify_all_false
>     ok 3 - test_heap_push_true
>     ok 4 - test_heap_push_false
>     ok 5 - test_heap_pop_push_true
>     ok 6 - test_heap_pop_push_false
> [snip]
> 
> And this from kunit-tool:
> [snip]
> [18:43:32] ============================================================
> [18:43:32] ======== [PASSED] min-heap ========
> [18:43:32] [PASSED] test_heapify_all_true
> [18:43:32] [PASSED] test_heapify_all_false
> [18:43:32] [PASSED] test_heap_push_true
> [18:43:32] [PASSED] test_heap_push_false
> [18:43:32] [PASSED] test_heap_pop_push_true
> [18:43:32] [PASSED] test_heap_pop_push_false
> [18:43:32] ============================================================
> [18:43:32] Testing complete. 20 tests run. 0 failed. 0 crashed.
> [18:43:32] Elapsed time: 9.758s total, 0.001s configuring, 6.012s
> building, 0.000s running
> [snip]

I don't care or care to use either; what does dmesg do? It used to be
that just building the self-tests was sufficient and any error would
show in dmesg when you boot the machine.

But if I now have to use some damn tool, this is a regression.
Vitor Massaru Iha Aug. 4, 2020, 1:46 p.m. UTC | #6
Hi Peter,

On Tue, Aug 4, 2020 at 10:25 AM <peterz@infradead.org> wrote:
>
> On Wed, Jul 29, 2020 at 06:57:17PM -0300, Vitor Massaru Iha wrote:
>
> > The results can be seen this way:
> >
> > This is an excerpt from the test.log with the result in TAP format:
> > [snip]
> > ok 5 - example
> >     # Subtest: min-heap
> >     1..6
> >     ok 1 - test_heapify_all_true
> >     ok 2 - test_heapify_all_false
> >     ok 3 - test_heap_push_true
> >     ok 4 - test_heap_push_false
> >     ok 5 - test_heap_pop_push_true
> >     ok 6 - test_heap_pop_push_false
> > [snip]
> >
> > And this from kunit-tool:
> > [snip]
> > [18:43:32] ============================================================
> > [18:43:32] ======== [PASSED] min-heap ========
> > [18:43:32] [PASSED] test_heapify_all_true
> > [18:43:32] [PASSED] test_heapify_all_false
> > [18:43:32] [PASSED] test_heap_push_true
> > [18:43:32] [PASSED] test_heap_push_false
> > [18:43:32] [PASSED] test_heap_pop_push_true
> > [18:43:32] [PASSED] test_heap_pop_push_false
> > [18:43:32] ============================================================
> > [18:43:32] Testing complete. 20 tests run. 0 failed. 0 crashed.
> > [18:43:32] Elapsed time: 9.758s total, 0.001s configuring, 6.012s
> > building, 0.000s running
> > [snip]
>
> I don't care or care to use either; what does dmesg do? It used to be
> that just building the self-tests was sufficient and any error would
> show in dmesg when you boot the machine.
>
> But if I now have to use some damn tool, this is a regression.

If you don't want to, you don't need to use the kunit-tool. If you
compile the tests as builtin and run the Kernel on your machine
the test result will be shown in dmesg in TAP format.

BR,
Vitor
Peter Zijlstra Aug. 4, 2020, 2:23 p.m. UTC | #7
On Tue, Aug 04, 2020 at 10:46:21AM -0300, Vitor Massaru Iha wrote:
> On Tue, Aug 4, 2020 at 10:25 AM <peterz@infradead.org> wrote:
> > On Wed, Jul 29, 2020 at 06:57:17PM -0300, Vitor Massaru Iha wrote:
> >
> > > The results can be seen this way:
> > >
> > > This is an excerpt from the test.log with the result in TAP format:
> > > [snip]
> > > ok 5 - example
> > >     # Subtest: min-heap
> > >     1..6
> > >     ok 1 - test_heapify_all_true
> > >     ok 2 - test_heapify_all_false
> > >     ok 3 - test_heap_push_true
> > >     ok 4 - test_heap_push_false
> > >     ok 5 - test_heap_pop_push_true
> > >     ok 6 - test_heap_pop_push_false
> > > [snip]

So ^ is TAP format?

> > I don't care or care to use either; what does dmesg do? It used to be
> > that just building the self-tests was sufficient and any error would
> > show in dmesg when you boot the machine.
> >
> > But if I now have to use some damn tool, this is a regression.
> 
> If you don't want to, you don't need to use the kunit-tool. If you
> compile the tests as builtin and run the Kernel on your machine
> the test result will be shown in dmesg in TAP format.

That's seems a lot more verbose than it is now. I've recently even done
a bunch of tests that don't print anything on success, dmesg is clutter
enough already.
Vitor Massaru Iha Aug. 4, 2020, 4:22 p.m. UTC | #8
Hi Peter,

On Tue, Aug 4, 2020 at 11:23 AM <peterz@infradead.org> wrote:
>
> On Tue, Aug 04, 2020 at 10:46:21AM -0300, Vitor Massaru Iha wrote:
> > On Tue, Aug 4, 2020 at 10:25 AM <peterz@infradead.org> wrote:
> > > On Wed, Jul 29, 2020 at 06:57:17PM -0300, Vitor Massaru Iha wrote:
> > >
> > > > The results can be seen this way:
> > > >
> > > > This is an excerpt from the test.log with the result in TAP format:
> > > > [snip]
> > > > ok 5 - example
> > > >     # Subtest: min-heap
> > > >     1..6
> > > >     ok 1 - test_heapify_all_true
> > > >     ok 2 - test_heapify_all_false
> > > >     ok 3 - test_heap_push_true
> > > >     ok 4 - test_heap_push_false
> > > >     ok 5 - test_heap_pop_push_true
> > > >     ok 6 - test_heap_pop_push_false
> > > > [snip]
>
> So ^ is TAP format?

Yep, you can see the spec here: https://testanything.org/tap-specification.html

>
> > > I don't care or care to use either; what does dmesg do? It used to be
> > > that just building the self-tests was sufficient and any error would
> > > show in dmesg when you boot the machine.
> > >
> > > But if I now have to use some damn tool, this is a regression.
> >
> > If you don't want to, you don't need to use the kunit-tool. If you
> > compile the tests as builtin and run the Kernel on your machine
> > the test result will be shown in dmesg in TAP format.
>
> That's seems a lot more verbose than it is now. I've recently even done
> a bunch of tests that don't print anything on success, dmesg is clutter
> enough already.

What tests do you refer to?

Running the test_min_heap.c, I got this from dmesg:

min_heap_test: test passed

And running min_heap_kunit.c:

ok 1 - min-heap

BR,
Vitor

Patch
diff mbox series

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 9ad9210d70a1..46674fc4972c 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1864,16 +1864,6 @@  config TEST_LIST_SORT

 	  If unsure, say N.

-config TEST_MIN_HEAP
-	tristate "Min heap test"
-	depends on DEBUG_KERNEL || m
-	help
-	  Enable this to turn on min heap function tests. This test is
-	  executed only once during system boot (so affects only boot time),
-	  or at module load time.
-
-	  If unsure, say N.
-
 config TEST_SORT
 	tristate "Array-based sort test"
 	depends on DEBUG_KERNEL || m
@@ -2185,6 +2175,25 @@  config LINEAR_RANGES_TEST

 	  If unsure, say N.

+config MIN_HEAP_KUNIT
+        tristate "KUnit test for Min heap"
+        depends on KUNIT
+        depends on DEBUG_KERNEL || m
+        help
+          Enable this to turn on min heap function tests. This test is
+          executed only once during system boot (so affects only boot time),
+          or at module load time.
+
+          KUnit tests run during boot and output the results to the debug log
+          in TAP format (http://testanything.org/). Only useful for kernel devs
+          running the KUnit test harness, and not intended for inclusion into a
+          production build.
+
+          For more information on KUnit and unit tests in general please refer
+          to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+          If unsure, say N.
+
 config TEST_UDELAY
 	tristate "udelay test driver"
 	help
diff --git a/lib/Makefile b/lib/Makefile
index b1c42c10073b..748f57063160 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -72,7 +72,6 @@  CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla)
 UBSAN_SANITIZE_test_ubsan.o := y
 obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
 obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
-obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
 obj-$(CONFIG_TEST_LKM) += test_module.o
 obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
 obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o
@@ -318,3 +317,4 @@  obj-$(CONFIG_OBJAGG) += objagg.o
 # KUnit tests
 obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
 obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
+obj-$(CONFIG_MIN_HEAP_KUNIT) += min_heap_kunit.o
diff --git a/lib/test_min_heap.c b/lib/min_heap_kunit.c
similarity index 60%
rename from lib/test_min_heap.c
rename to lib/min_heap_kunit.c
index d19c8080fd4d..398db1c63146 100644
--- a/lib/test_min_heap.c
+++ b/lib/min_heap_kunit.c
@@ -7,9 +7,8 @@ 

 #include <linux/log2.h>
 #include <linux/min_heap.h>
-#include <linux/module.h>
-#include <linux/printk.h>
 #include <linux/random.h>
+#include <kunit/test.h>

 static __init bool less_than(const void *lhs, const void *rhs)
 {
@@ -29,37 +28,34 @@  static __init void swap_ints(void *lhs, void *rhs)
 	*(int *)rhs = temp;
 }

-static __init int pop_verify_heap(bool min_heap,
+static __init void pop_verify_heap(struct kunit *context,
+				bool min_heap,
 				struct min_heap *heap,
 				const struct min_heap_callbacks *funcs)
 {
 	int *values = heap->data;
-	int err = 0;
 	int last;

 	last = values[0];
 	min_heap_pop(heap, funcs);
 	while (heap->nr > 0) {
 		if (min_heap) {
-			if (last > values[0]) {
-				pr_err("error: expected %d <= %d\n", last,
-					values[0]);
-				err++;
-			}
+			KUNIT_EXPECT_FALSE_MSG(context,
+					       last > values[0],
+					       "expected %d <= %d\n",
+					       last, values[0]);
 		} else {
-			if (last < values[0]) {
-				pr_err("error: expected %d >= %d\n", last,
-					values[0]);
-				err++;
-			}
+			KUNIT_EXPECT_FALSE_MSG(context,
+					       last < values[0],
+					       "expected %d >= %d\n",
+					       last, values[0]);
 		}
 		last = values[0];
 		min_heap_pop(heap, funcs);
 	}
-	return err;
 }

-static __init int test_heapify_all(bool min_heap)
+static __init void test_heapify_all(struct kunit *context, bool min_heap)
 {
 	int values[] = { 3, 1, 2, 4, 0x8000000, 0x7FFFFFF, 0,
 			 -3, -1, -2, -4, 0x8000000, 0x7FFFFFF };
@@ -73,12 +69,11 @@  static __init int test_heapify_all(bool min_heap)
 		.less = min_heap ? less_than : greater_than,
 		.swp = swap_ints,
 	};
-	int i, err;
+	int i;

 	/* Test with known set of values. */
 	min_heapify_all(&heap, &funcs);
-	err = pop_verify_heap(min_heap, &heap, &funcs);
-
+	pop_verify_heap(context, min_heap, &heap, &funcs);

 	/* Test with randomly generated values. */
 	heap.nr = ARRAY_SIZE(values);
@@ -86,12 +81,10 @@  static __init int test_heapify_all(bool min_heap)
 		values[i] = get_random_int();

 	min_heapify_all(&heap, &funcs);
-	err += pop_verify_heap(min_heap, &heap, &funcs);
-
-	return err;
+	pop_verify_heap(context, min_heap, &heap, &funcs);
 }

-static __init int test_heap_push(bool min_heap)
+static __init void test_heap_push(struct kunit *context, bool min_heap)
 {
 	const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
 			     -3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
@@ -106,25 +99,22 @@  static __init int test_heap_push(bool min_heap)
 		.less = min_heap ? less_than : greater_than,
 		.swp = swap_ints,
 	};
-	int i, temp, err;
+	int i, temp;

 	/* Test with known set of values copied from data. */
 	for (i = 0; i < ARRAY_SIZE(data); i++)
 		min_heap_push(&heap, &data[i], &funcs);
-
-	err = pop_verify_heap(min_heap, &heap, &funcs);
+	pop_verify_heap(context, min_heap, &heap, &funcs);

 	/* Test with randomly generated values. */
 	while (heap.nr < heap.size) {
 		temp = get_random_int();
 		min_heap_push(&heap, &temp, &funcs);
 	}
-	err += pop_verify_heap(min_heap, &heap, &funcs);
-
-	return err;
+	pop_verify_heap(context, min_heap, &heap, &funcs);
 }

-static __init int test_heap_pop_push(bool min_heap)
+static __init void test_heap_pop_push(struct kunit *context, bool min_heap)
 {
 	const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
 			     -3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
@@ -139,7 +129,7 @@  static __init int test_heap_pop_push(bool min_heap)
 		.less = min_heap ? less_than : greater_than,
 		.swp = swap_ints,
 	};
-	int i, temp, err;
+	int i, temp;

 	/* Fill values with data to pop and replace. */
 	temp = min_heap ? 0x80000000 : 0x7FFFFFFF;
@@ -149,8 +139,7 @@  static __init int test_heap_pop_push(bool min_heap)
 	/* Test with known set of values copied from data. */
 	for (i = 0; i < ARRAY_SIZE(data); i++)
 		min_heap_pop_push(&heap, &data[i], &funcs);
-
-	err = pop_verify_heap(min_heap, &heap, &funcs);
+	pop_verify_heap(context, min_heap, &heap, &funcs);

 	heap.nr = 0;
 	for (i = 0; i < ARRAY_SIZE(data); i++)
@@ -161,34 +150,54 @@  static __init int test_heap_pop_push(bool min_heap)
 		temp = get_random_int();
 		min_heap_pop_push(&heap, &temp, &funcs);
 	}
-	err += pop_verify_heap(min_heap, &heap, &funcs);
+	pop_verify_heap(context, min_heap, &heap, &funcs);
+}

-	return err;
+static void __init test_heapify_all_true(struct kunit *context)
+{
+	test_heapify_all(context, true);
 }

-static int __init test_min_heap_init(void)
+static void __init test_heapify_all_false(struct kunit *context)
 {
-	int err = 0;
-
-	err += test_heapify_all(true);
-	err += test_heapify_all(false);
-	err += test_heap_push(true);
-	err += test_heap_push(false);
-	err += test_heap_pop_push(true);
-	err += test_heap_pop_push(false);
-	if (err) {
-		pr_err("test failed with %d errors\n", err);
-		return -EINVAL;
-	}
-	pr_info("test passed\n");
-	return 0;
+	test_heapify_all(context, true);
+}
+
+static void __init test_heap_push_true(struct kunit *context)
+{
+	test_heap_push(context, true);
+}
+
+static void __init test_heap_push_false(struct kunit *context)
+{
+	test_heap_push(context, false);
 }
-module_init(test_min_heap_init);

-static void __exit test_min_heap_exit(void)
+static void __init test_heap_pop_push_true(struct kunit *context)
 {
-	/* do nothing */
+	test_heap_pop_push(context, true);
 }
-module_exit(test_min_heap_exit);
+
+static void __init test_heap_pop_push_false(struct kunit *context)
+{
+	test_heap_pop_push(context, false);
+}
+
+static struct kunit_case __refdata min_heap_test_cases[] = {
+	KUNIT_CASE(test_heapify_all_true),
+	KUNIT_CASE(test_heapify_all_false),
+	KUNIT_CASE(test_heap_push_true),
+	KUNIT_CASE(test_heap_push_false),
+	KUNIT_CASE(test_heap_pop_push_true),
+	KUNIT_CASE(test_heap_pop_push_false),
+	{}
+};
+
+static struct kunit_suite min_heap_test_suite = {
+	.name = "min-heap",
+	.test_cases = min_heap_test_cases,
+};
+
+kunit_test_suites(&min_heap_test_suite);

 MODULE_LICENSE("GPL");