test: py: add optee_rpmb tests

Add read/write tests for optee_rpmb cmd.

Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

test/py/tests/test_optee_rpmb.py

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier:  GPL-2.0+
+#
+# Tests for OP-TEE RPMB read/write support
+
+"""
+This tests optee_rpmb cmd in U-Boot
+"""
+
+import pytest
+import u_boot_utils as util
+
+@pytest.mark.buildconfigspec('cmd_optee_rpmb')
+def test_optee_rpmb_read_write(u_boot_console):
+    """Test OP-TEE RPMB cmd read/write
+    """
+    response = u_boot_console.run_command('optee_rpmb write_pvalue test_variable test_value')
+    assert response == 'Wrote 11 bytes'
+
+    response = u_boot_console.run_command('optee_rpmb read_pvalue test_variable 11')
+    assert response == 'Read 11 bytes, value = test_value'