add pytests for 'gpt rename' and 'gpt swap'

Add unit tests for the 'gpt rename' and 'gpt swap' commands that
rely on the block device created by test/py/make_test_disk.py.
Add CONFIG_CMD_GPT_RENAME to the sandbox_defconfig.  Remove the
testdisk.raw test device at the end of the tests.

Signed-off-by: Alison Chaiken <alison@peloton-tech.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

configs/sandbox_defconfig

@@ -34,6 +34,7 @@ CONFIG_CMD_MX_CYCLIC=y
 CONFIG_CMD_DEMO=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_GPT=y
+CONFIG_CMD_GPT_RENAME=y
 CONFIG_CMD_IDE=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_PCI=y

test/py/tests/test_gpt.py

@@ -35,4 +35,35 @@ def test_gpt_save_guid(u_boot_console):
     output = u_boot_console.run_command('gpt guid host 0 newguid')
     output = u_boot_console.run_command('printenv newguid')
     assert '375a56f7-d6c9-4e81-b5f0-09d41ca89efe' in output
+
+@pytest.mark.buildconfigspec('cmd_gpt')
+def test_gpt_rename_partition(u_boot_console):
+    """Test the gpt rename command to write partition names."""
+
+    if u_boot_console.config.buildconfig.get('config_cmd_gpt_rename', 'n') != 'y':
+        pytest.skip('gpt rename command not supported')
+    u_boot_console.run_command('host bind 0 testdisk.raw')
+    u_boot_console.run_command('gpt rename host 0 1 first')
+    output = u_boot_console.run_command('gpt read host 0')
+    assert 'name first' in output
+    u_boot_console.run_command('gpt rename host 0 2 second')
+    output = u_boot_console.run_command('gpt read host 0')
+    assert 'name second' in output
+
+@pytest.mark.buildconfigspec('cmd_gpt')
+def test_gpt_swap_partitions(u_boot_console):
+    """Test the gpt swap command to exchange two partition names."""
+
+    if u_boot_console.config.buildconfig.get('config_cmd_gpt_rename', 'n') != 'y':
+        pytest.skip('gpt rename command not supported')
+    if u_boot_console.config.buildconfig.get('config_cmd_part', 'n') != 'y':
+        pytest.skip('gpt swap test needs CMD_PART')
+    u_boot_console.run_command('host bind 0 testdisk.raw')
+    output = u_boot_console.run_command('part list host 0')
+    assert '0x000007ff	"first"' in output
+    assert '0x000017ff	"second"' in output
+    u_boot_console.run_command('gpt swap host 0 first second')
+    output = u_boot_console.run_command('part list host 0')
+    assert '0x000007ff	"second"' in output
+    assert '0x000017ff	"first"' in output
     os.remove('testdisk.raw')