[RFC PATCH 04/10] mm/damon/tests/core-kunit: extend set_regions() test for error case

[SJ Park <sj@kernel.org>]

damon_test_set_regions_for() is designed to test only success-expected
damon_set_regions() calls.  Extend it to cover error-expected calls,
too.

Signed-off-by: SJ Park <sj@kernel.org>
---
 mm/damon/tests/core-kunit.h | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h
index 4a536d41cdb2d..befc1196d6d60 100644
--- a/mm/damon/tests/core-kunit.h
+++ b/mm/damon/tests/core-kunit.h
@@ -463,11 +463,12 @@ static void damon_test_set_regions_for(struct kunit *test,
 		struct damon_addr_range *old_ranges, int sz_old_ranges,
 		struct damon_addr_range *new_ranges, int sz_new_ranges,
 		unsigned long min_region_sz,
-		struct damon_addr_range *expect_ranges, int sz_expect_ranges)
+		struct damon_addr_range *expect_ranges, int sz_expect_ranges,
+		int expect_err)
 {
 	struct damon_target *t;
 	struct damon_region *r;
-	int i;
+	int i, err;
 
 	t = damon_new_target();
 	if (!t)
@@ -481,7 +482,8 @@ static void damon_test_set_regions_for(struct kunit *test,
 		damon_add_region(r, t);
 	}
 
-	damon_set_regions(t, new_ranges, sz_new_ranges, min_region_sz);
+	err = damon_set_regions(t, new_ranges, sz_new_ranges, min_region_sz);
+	KUNIT_EXPECT_EQ(test, err, expect_err);
 
 	KUNIT_EXPECT_EQ(test, damon_nr_regions(t), sz_expect_ranges);
 	if (damon_nr_regions(t) != sz_expect_ranges) {
@@ -510,7 +512,7 @@ static void damon_test_set_regions(struct kunit *test)
 			(struct damon_addr_range[]){
 			{.start = 5, .end = 15},
 			{.start = 15, .end = 25},
-			}, 2);
+			}, 2, 0);
 	/* Un-intersecting regions should be removed. */
 	damon_test_set_regions_for(test,
 			(struct damon_addr_range[]){
@@ -523,7 +525,7 @@ static void damon_test_set_regions(struct kunit *test)
 			1,
 			(struct damon_addr_range[]){
 			{.start = 18, .end = 23},
-			}, 1);
+			}, 1, 0);
 	/*
 	 * Holes should be filled up with new regions.
 	 *
@@ -544,7 +546,7 @@ static void damon_test_set_regions(struct kunit *test)
 			{.start = 8, .end = 16},
 			{.start = 16, .end = 24},
 			{.start = 24, .end = 28},
-			}, 3);
+			}, 3, 0);
 	/*
 	 * New regions should be able to be appended.
 	 *
@@ -566,7 +568,7 @@ static void damon_test_set_regions(struct kunit *test)
 			{.start = 0, .end = 4},
 			{.start = 4, .end = 15},
 			{.start = 25, .end = 40},
-			}, 3);
+			}, 3, 0);
 	/*
 	 * New regions should be able to be inserted.
 	 *
@@ -589,7 +591,7 @@ static void damon_test_set_regions(struct kunit *test)
 			{.start = 0, .end = 15},
 			{.start = 25, .end = 40},
 			{.start = 44, .end = 50},
-			}, 3);
+			}, 3, 0);
 }
 
 static void damon_test_update_monitoring_result(struct kunit *test)
-- 
2.47.3