KUNIT_EXPECT_FALSE(9)

💖 KUNIT_EXPECT_FALSE — the “expect false” vibe check 💖

okay so this is the KUNIT_EXPECT_FALSE(9) page from the Kernel API Manual, and it is literally the group-chat message that says “bestie, this expression better be false.” no cap. It’s giving “tiny expectation, huge consequences.” 💅

🌸 NAME 🌸

KUNIT_EXPECT_FALSE — makes a test failure when the expression is not false. periodt. 💀✨

✨ SYNOPSIS ✨

KUNIT_EXPECT_FALSE (test , condition );

💅 ARGUMENTS 💅

• test — the test context object. This is the test’s main-character little context bestie. 🫶
• condition — an arbitrary boolean expression. The test fails when this does not evaluate to false. yes, really—if it’s not false, the test goes 💀.

🦋 DESCRIPTION 🦋

It sets an expectation that condition evaluates to false. That’s the whole vibe: expect false, bestie. 💖

See KUNIT_EXPECT_TRUE for more information. (iykyk, the true-ish sibling has the extra lore.) ⭐

🌈 SEE ALSO 🌈

The kernel file ./include/kunit/test.h is the source-side bestie, and the whole linked crew is here:

• enum kunit_status(9), struct kunit_case(9), KUNIT_CASE(9), KUNIT_CASE_ATTR(9), KUNIT_CASE_SLOW(9), KUNIT_CASE_PARAM(9), KUNIT_CASE_PARAM_ATTR(9), KUNIT_CASE_PARAM_WITH_INIT(9)
• struct kunit_suite(9), struct kunit(9), kunit_test_suites(9), kunit_test_init_section_suites(9)
• kunit_kmalloc_array(9), kunit_kmalloc(9), kunit_kfree(9), kunit_kzalloc(9), kunit_kcalloc(9), kunit_kfree_const(9), kunit_kstrdup(9), kunit_kstrdup_const(9)
• kunit_attach_mm(9), kunit_vm_mmap(9), kunit_mark_skipped(9), kunit_skip(9), kunit_info(9), kunit_warn(9), kunit_err(9)
• KUNIT_SUCCEED(9), KUNIT_FAIL(9), KUNIT_EXPECT_TRUE(9), KUNIT_EXPECT_EQ(9), KUNIT_EXPECT_PTR_EQ(9), KUNIT_EXPECT_NE(9), KUNIT_EXPECT_PTR_NE(9), KUNIT_EXPECT_LT(9), KUNIT_EXPECT_LE(9), KUNIT_EXPECT_GT(9), KUNIT_EXPECT_GE(9)
• KUNIT_EXPECT_STREQ(9), KUNIT_EXPECT_STRNEQ(9), KUNIT_EXPECT_MEMEQ(9), KUNIT_EXPECT_MEMNEQ(9), KUNIT_EXPECT_NULL(9), KUNIT_EXPECT_NOT_NULL(9), KUNIT_EXPECT_NOT_ERR_OR_NULL(9), KUNIT_FAIL_AND_ABORT(9)
• KUNIT_ASSERT_TRUE(9), KUNIT_ASSERT_FALSE(9), KUNIT_ASSERT_EQ(9), KUNIT_ASSERT_PTR_EQ(9), KUNIT_ASSERT_NE(9), KUNIT_ASSERT_PTR_NE(9), KUNIT_ASSERT_LT(9), KUNIT_ASSERT_LE(9), KUNIT_ASSERT_GT(9), KUNIT_ASSERT_GE(9)
• KUNIT_ASSERT_STREQ(9), KUNIT_ASSERT_STRNEQ(9), KUNIT_ASSERT_MEMEQ(9), KUNIT_ASSERT_MEMNEQ(9), KUNIT_ASSERT_NULL(9), KUNIT_ASSERT_NOT_NULL(9), KUNIT_ASSERT_NOT_ERR_OR_NULL(9)
• KUNIT_ARRAY_PARAM(9), KUNIT_ARRAY_PARAM_DESC(9), kunit_register_params_array(9), kunit_warning_suppress(9), KUNIT_SUPPRESSED_WARNING_COUNT(9), KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(9), KUNIT_ASSERT_SUPPRESSED_WARNING_COUNT(9)

okay bye bestie! 🫶 this page is from ./include/kunit, dated October 2026, and it goes by KUNIT_EXPECT_FALSE(9) — mwah 💋✨