Add "make test" target to run pytest

This will create a virtualenv if required.

There is a bit of churn here reverting to autoconf 2.59 in generated
config.h.in and configure

Makefile.in

@@ -236,7 +236,7 @@ $(STATIC_LTC): $(OPTION_HEADERS)
 $(STATIC_LTM): $(OPTION_HEADERS)
 	$(MAKE) -C libtommath
 
-.PHONY : clean sizes thisclean distclean tidy ltc-clean ltm-clean lint
+.PHONY : clean sizes thisclean distclean tidy ltc-clean ltm-clean lint test
 
 ltc-clean:
 	$(MAKE) -C libtomcrypt clean
@@ -265,6 +265,9 @@ tidy:
 lint:
 	cd $(srcdir); ./dropbear_lint.sh
 
+test:
+	make -C test
+
 ## Fuzzing targets
 
 # list of fuzz targets

config.h.in

@@ -177,6 +177,9 @@
 /* Define to 1 if you have the <mach/mach_time.h> header file. */
 #undef HAVE_MACH_MACH_TIME_H
 
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
 /* Define to 1 if you have the `memset_s' function. */
 #undef HAVE_MEMSET_S
 
@@ -231,9 +234,6 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
-/* Define to 1 if you have the <stdio.h> header file. */
-#undef HAVE_STDIO_H
-
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
@@ -411,14 +411,17 @@
 /* Define to the type of arg 5 for `select'. */
 #undef SELECT_TYPE_ARG5
 
-/* Define to 1 if all of the C90 standard headers exist (not just the ones
+/* Define to 1 if you have the ANSI C header files. */
-   required in a freestanding environment). This macro is provided for
-   backward compatibility; new code need not use it. */
 #undef STDC_HEADERS
 
 /* Use /dev/ptmx */
 #undef USE_DEV_PTMX
 
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
 /* Number of bits in a file offset, on hosts where this is settable. */
 #undef _FILE_OFFSET_BITS
 
@@ -437,7 +440,7 @@
 /* Define to `int' if <sys/types.h> does not define. */
 #undef mode_t
 
-/* Define as a signed integer type capable of holding a process identifier. */
+/* Define to `int' if <sys/types.h> does not define. */
 #undef pid_t
 
 /* Define to `unsigned int' if <sys/types.h> does not define. */

configure.ac

@@ -862,7 +862,7 @@ LIBTOM_FILES="libtomcrypt/Makefile libtommath/Makefile"
 fi
 
 AC_CONFIG_HEADERS([config.h])
-AC_CONFIG_FILES(Makefile $LIBTOM_FILES)
+AC_CONFIG_FILES(Makefile $LIBTOM_FILES test/Makefile)
 AC_OUTPUT
 
 AC_MSG_NOTICE()

test/Makefile.in

@@ -0,0 +1,19 @@
+srcdir=@srcdir@
+
+all: test
+
+test: venv/bin/pytest fakekey
+	./venv/bin/pytest --hostkey=fakekey --dbclient=../dbclient --dropbear=../dropbear $(srcdir)
+
+one: venv/bin/pytest fakekey
+	./venv/bin/pytest --hostkey=fakekey --dbclient=../dbclient --dropbear=../dropbear $(srcdir) -k exit
+
+fakekey:
+	../dropbearkey -t ecdsa -f $@
+
+venv/bin/pytest: $(srcdir)/requirements.txt
+	python3 -m venv init venv
+	./venv/bin/pip install --upgrade pip
+	./venv/bin/pip install -r $(srcdir)/requirements.txt
+
+.PHONY: test