dm: test: usb: Add a test for device reordering
Add tests that 'usb tree' produces the right output when a device changes
order on the bus.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/usb.c b/test/dm/usb.c
index 721d3ad..fb193e8 100644
--- a/test/dm/usb.c
+++ b/test/dm/usb.c
@@ -208,3 +208,53 @@
return 0;
}
DM_TEST(dm_test_usb_tree_remove, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+const char usb_tree_reorder[] =
+" 1 Hub (12 Mb/s, 100mA)\n"
+" | sandbox hub 2345\n"
+" |\n"
+" |\b+-2 Mass Storage (12 Mb/s, 100mA)\n"
+" | sandbox flash flash-stick@0\n"
+" | \n"
+" |\b+-3 Mass Storage (12 Mb/s, 100mA)\n"
+" | sandbox flash flash-stick@2\n"
+" | \n"
+" |\b+-4 Mass Storage (12 Mb/s, 100mA)\n"
+" sandbox flash flash-stick@1\n"
+" \n";
+
+/*
+ * test that the 'usb tree' command output looks correct when we reorder two
+ * devices.
+ */
+static int dm_test_usb_tree_reorder(struct unit_test_state *uts)
+{
+ struct udevice *dev, *parent;
+ char *data;
+ int len;
+
+ /* Remove the second emulation device */
+ ut_assertok(uclass_find_device_by_name(UCLASS_USB_EMUL, "flash-stick@1",
+ &dev));
+ parent = dev->parent;
+
+ /* Reorder the devices in the parent list and uclass list */
+ list_del(&dev->sibling_node);
+ list_add_tail(&dev->sibling_node, &parent->child_head);
+
+ list_del(&dev->uclass_node);
+ list_add_tail(&dev->uclass_node, &dev->uclass->dev_head);
+
+ state_set_skip_delays(true);
+ ut_assertok(usb_init());
+ console_record_reset_enable();
+ usb_show_tree();
+ len = membuff_getraw(&gd->console_out, -1, true, &data);
+ if (len)
+ data[len] = '\0';
+ ut_asserteq_str(usb_tree_reorder, data);
+ ut_assertok(usb_stop());
+
+ return 0;
+}
+DM_TEST(dm_test_usb_tree_reorder, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);