operators(9)

💅 operators

ok so this is from the Kernel API Manual bestie — the operators(9) page — and it's literally the cheat sheet for the operator macros you drop inside TEST and TEST_F. ✨

Here's the whole vibe, and it's genuinely this simple:

• ASSERT_* calls — these ones do NOT play. The second one trips, test execution stops immediately, right there, no coming back. 💀
• EXPECT_* calls — way more chill. They emit a failure warning, they note it, and then they continue on with the test like nothing happened. 🫶

That's it, that's the whole page. No cap. The difference between the two families is literally just "stop the whole thing" vs "log it and keep going," and honestly that's the tea. 🎀

bestie pls remember: with ASSERT_* you don't get to see what would've happened after — it's over. With EXPECT_* you get the full picture but you gotta actually read your warnings. 👑

🌈 SEE ALSO ✨

The main character of this whole saga is the kernel file ./tools/testing/selftests/kselftest_harness.h — go read example(9) first, it's giving tutorial energy 🧚. Then the whole friend group:

• TH_LOG(9)
• SKIP(9)
• TEST(9)
• TEST_SIGNAL(9)
• FIXTURE_DATA(9)
• FIXTURE(9)
• FIXTURE_SETUP(9)
• FIXTURE_TEARDOWN(9)
• FIXTURE_TEARDOWN_PARENT(9)
• FIXTURE_VARIANT(9)
• FIXTURE_VARIANT_ADD(9)
• TEST_F(9)
• TEST_HARNESS_MAIN(9)

The assert girlies 🔥:

• ASSERT_EQ(9)
• ASSERT_NE(9)
• ASSERT_LT(9)
• ASSERT_LE(9)
• ASSERT_GT(9)
• ASSERT_GE(9)
• ASSERT_NULL(9)
• ASSERT_TRUE(9)
• ASSERT_FALSE(9)
• ASSERT_STREQ(9)
• ASSERT_STRNE(9)

The expect girlies 🌸:

• EXPECT_EQ(9)
• EXPECT_NE(9)
• EXPECT_LT(9)
• EXPECT_LE(9)
• EXPECT_GT(9)
• EXPECT_GE(9)
• EXPECT_NULL(9)
• EXPECT_TRUE(9)
• EXPECT_FALSE(9)
• EXPECT_STREQ(9)
• EXPECT_STRNE(9)

And the one who's like "I told you so" 🙈:

• XFAIL_ADD(9)

okay that's the page!! it lives down in ./tools/testing/selftests and it's dated October 2026, stamped with operators(9) at the bottom like a little signature 💜 go forth and test, bestie — you're gonna slay 🦋⭐