test: Add test for source command

This adds a basic test for FIT image handling by the source command.
It's a python test becase we need to run mkimage.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

test/py/tests/test_source.py

@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (C) 2022 Sean Anderson <sean.anderson@seco.com>
+
+import os
+import pytest
+import u_boot_utils as util
+
+@pytest.mark.boardspec('sandbox')
+@pytest.mark.buildconfigspec('cmd_echo')
+@pytest.mark.buildconfigspec('cmd_source')
+@pytest.mark.buildconfigspec('fit')
+def test_source(u_boot_console):
+    # Compile our test script image
+    cons = u_boot_console
+    mkimage = os.path.join(cons.config.build_dir, 'tools/mkimage')
+    its = os.path.join(cons.config.source_dir, 'test/py/tests/source.its')
+    fit = os.path.join(cons.config.build_dir, 'source.itb')
+    util.run_and_log(cons, (mkimage, '-f', its, fit))
+    cons.run_command(f'host load hostfs - $loadaddr {fit}')
+
+    assert '1' in cons.run_command('source')
+    assert '1' in cons.run_command('source :script-1')
+    assert '2' in cons.run_command('source :script-2')
+    assert 'Fail' in cons.run_command('source :not-a-script || echo Fail')
+
+    cons.run_command('fdt addr $loadaddr')
+    cons.run_command('fdt rm /images default')
+    assert 'Fail' in cons.run_command('source || echo Fail')