tests: add a mock implementation of {Get,Set}Variable and tests for it

Some tests will need variables, and so we need a mock implementation of
the various calls relating to them.

This patch adds implementations for the EFI Runtime Services calls
GetVariable(), SetVariable(), GetNextVariableName(), and
QueryVariableInfo().  Additionally, it enforces tunable limits on
storage for variables, and (with only a little work) the limits can be
different for SetVariable() vs what is returned by QueryVariableInfo().
That is, it can lie to you like real systems do.

Signed-off-by: Peter Jones <pjones@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/test.c b/test.c
index 8a4a72ff..46cab533 100644
--- a/test.c
+++ b/test.c
@@ -259,4 +259,12 @@ console_print(const CHAR16 *fmt, ...)
 	return 0;
 }
 
+#ifndef HAVE_START_IMAGE
+EFI_STATUS
+start_image(EFI_HANDLE image_handle, CHAR16 *ImagePath)
+{
+	return EFI_UNSUPPORTED;
+}
+#endif
+
 // vim:fenc=utf-8:tw=75:noet