Implement unit tests for auth-gen-token

The unit test is breaking the 80 char limit in some places
but the remaining lines it breaks the limit I feel
forcing the 80 char limit will impair readibility

Patch V2: adapt unit tests to other V2 patches
Patch V4: Resolve rebase conflicts
Patch V5: Add \ lost in rebase that broke compilation
Patch V7: Fix unit test failure, try to stay below 80
Acked-by: David Sommerseth <davids@openvpn.net>
Message-Id: <20190917123321.15993-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg18821.html

Signed-off-by: Gert Doering <gert@greenie.muc.de>

tests/unit_tests/openvpn/Makefile.am

@@ -6,7 +6,7 @@ if HAVE_LD_WRAP_SUPPORT
 test_binaries += argv_testdriver buffer_testdriver
 endif
 
-test_binaries += crypto_testdriver packet_id_testdriver
+test_binaries += crypto_testdriver packet_id_testdriver auth_token_testdriver
 if HAVE_LD_WRAP_SUPPORT
 test_binaries += tls_crypt_testdriver
 endif
@@ -94,3 +94,19 @@ networking_testdriver_SOURCES = test_networking.c mock_msg.c \
 	$(openvpn_srcdir)/packet_id.c \
 	$(openvpn_srcdir)/platform.c
 endif
+
+auth_token_testdriver_CFLAGS  = @TEST_CFLAGS@ \
+	-I$(openvpn_includedir) -I$(compat_srcdir) -I$(openvpn_srcdir) \
+	$(OPTIONAL_CRYPTO_CFLAGS)
+auth_token_testdriver_LDFLAGS = @TEST_LDFLAGS@ \
+	$(OPTIONAL_CRYPTO_LIBS)
+
+auth_token_testdriver_SOURCES = test_auth_token.c mock_msg.c \
+	$(openvpn_srcdir)/buffer.c \
+	$(openvpn_srcdir)/crypto.c \
+	$(openvpn_srcdir)/crypto_mbedtls.c \
+	$(openvpn_srcdir)/crypto_openssl.c \
+	$(openvpn_srcdir)/otime.c \
+	$(openvpn_srcdir)/packet_id.c \
+	$(openvpn_srcdir)/platform.c \
+	$(openvpn_srcdir)/base64.c