[Qemu-devel] [PATCH 05/13] pca9552-test: do not rely on state across tests

[Paolo Bonzini]

receive_autoinc is relying on the LED state that is set by
send_and_receive.  Stop doing that, because qgraph resets the
machine between tests.

Signed-off-by: Paolo Bonzini <address@hidden>
---
 tests/pca9552-test.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/tests/pca9552-test.c b/tests/pca9552-test.c
index 06359b7435..89b4445e29 100644
--- a/tests/pca9552-test.c
+++ b/tests/pca9552-test.c
@@ -18,11 +18,20 @@
 
 static I2CAdapter *i2c;
 
+static void pca9552_init(I2CAdapter *i2c)
+{
+    /* Switch on LEDs 0 and 12 */
+    i2c_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0, 0x54);
+    i2c_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3, 0x54);
+}
+
 static void receive_autoinc(void)
 {
     uint8_t resp;
     uint8_t reg = PCA9552_LS0 | PCA9552_AUTOINC;
 
+    pca9552_init(i2cdev);
+
     i2c_send(i2c, PCA9552_TEST_ADDR, &reg, 1);
 
     /* PCA9552_LS0 */
@@ -52,16 +61,14 @@ static void send_and_receive(void)
     value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0);
     g_assert_cmphex(value, ==, 0x0);
 
-    /* Switch on LED 0 */
-    i2c_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0, 0x54);
+    pca9552_init(i2cdev);
+
     value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0);
     g_assert_cmphex(value, ==, 0x54);
 
     value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0);
     g_assert_cmphex(value, ==, 0x01);
 
-    /* Switch on LED 12 */
-    i2c_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3, 0x54);
     value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3);
     g_assert_cmphex(value, ==, 0x54);
 
-- 
2.20.1