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dm: test: usb: Add a test for device reordering

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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>
This commit is contained in:
Simon Glass 2015-11-08 23:48:02 -07:00
parent 431cbd6d82
commit cd716372b3
1 changed files with 50 additions and 0 deletions
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50
test/dm/usb.c
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@ -208,3 +208,53 @@ static int dm_test_usb_tree_remove(struct unit_test_state *uts)
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);