[test] Add self-tests for SHA-1 algorithm

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/tests/digest_test.h

@@ -0,0 +1,36 @@
+#ifndef _DIGEST_TEST_H
+#define _DIGEST_TEST_H
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/crypto.h>
+#include <ipxe/test.h>
+
+/** Maximum number of digest test fragments */
+#define NUM_DIGEST_TEST_FRAG 8
+
+/** A digest test fragment list */
+struct digest_test_fragments {
+	/** Fragment lengths */
+	size_t len[NUM_DIGEST_TEST_FRAG];
+};
+
+extern int digest_test ( struct digest_algorithm *digest,
+			 struct digest_test_fragments *fragments,
+			 void *data, size_t len, void *expected );
+
+/**
+ * Report digest test result
+ *
+ * @v digest		Digest algorithm
+ * @v fragments		Digest test fragment list, or NULL
+ * @v data		Test data
+ * @v len		Length of test data
+ * @v expected		Expected digest value
+ */
+#define digest_ok( digest, fragments, data, len, expected ) do {	\
+	ok ( digest_test ( digest, fragments, data, len, expected ) );	\
+	} while ( 0 )
+
+#endif /* _DIGEST_TEST_H */