216   BIO *bio1, *bio2;  in TEST_P()  local
217   ASSERT_TRUE(BIO_new_bio_pair(&bio1, 10, &bio2, 10));  in TEST_P()
218   bssl::UniquePtr<BIO> free_bio1(bio1), free_bio2(bio2);  in TEST_P()
221     std::swap(bio1, bio2);  in TEST_P()
225   EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
226   EXPECT_EQ(0u, BIO_ctrl_get_read_request(bio1));  in TEST_P()
230   EXPECT_EQ(5, BIO_write(bio1, "12345", 5));  in TEST_P()
231   EXPECT_EQ(5u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
234   EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
237   EXPECT_EQ(10, BIO_write(bio1, "1234567890___", 13));  in TEST_P()
238   EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
239   EXPECT_EQ(-1, BIO_write(bio1, "z", 1));  in TEST_P()
240   EXPECT_TRUE(BIO_should_write(bio1));  in TEST_P()
243   EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
248   EXPECT_EQ(5u, BIO_ctrl_get_read_request(bio1));  in TEST_P()
253   EXPECT_EQ(10u, BIO_ctrl_get_read_request(bio1));  in TEST_P()
256   EXPECT_EQ(5, BIO_write(bio1, "12345", 5));  in TEST_P()
257   EXPECT_EQ(5u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
258   EXPECT_EQ(5, BIO_write(bio1, "67890___", 8));  in TEST_P()
259   EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
262   EXPECT_EQ(3u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
265   EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
268   EXPECT_EQ(0u, BIO_ctrl_get_read_request(bio1));  in TEST_P()
272   EXPECT_EQ(8, BIO_write(bio1, "abcdefgh", 8));  in TEST_P()
273   EXPECT_EQ(2u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
276   EXPECT_EQ(5u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
277   EXPECT_EQ(5, BIO_write(bio1, "ijklm___", 8));  in TEST_P()
278   EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
281   EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
284   EXPECT_EQ(5, BIO_write(bio1, "12345", 5));  in TEST_P()
288   ASSERT_EQ(5, BIO_read(bio1, buf, sizeof(buf)));  in TEST_P()
292   EXPECT_EQ(5, BIO_write(bio1, "12345", 5));  in TEST_P()
293   EXPECT_TRUE(BIO_shutdown_wr(bio1));  in TEST_P()
299   EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));  in TEST_P()
300   EXPECT_EQ(-1, BIO_write(bio1, "_____", 5));  in TEST_P()
308   ASSERT_EQ(5, BIO_read(bio1, buf, sizeof(buf)));  in TEST_P()