diff --git a/regress/unittests/misc/test_convtime.c b/regress/unittests/misc/test_convtime.c
new file mode 100644
index 000000000..8da05a261
--- /dev/null
+++ b/regress/unittests/misc/test_convtime.c
@@ -0,0 +1,55 @@
+/* 	$OpenBSD: test_convtime.c,v 1.1 2021/03/19 03:25:01 djm Exp $ */
+/*
+ * Regress test for misc time conversion functions.
+ *
+ * Placed in the public domain.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "test_helper.h"
+
+#include "log.h"
+#include "misc.h"
+
+void test_convtime(void);
+
+void
+test_convtime(void)
+{
+	char buf[1024];
+
+	TEST_START("misc_convtime");
+	ASSERT_INT_EQ(convtime("0"), 0);
+	ASSERT_INT_EQ(convtime("1"), 1);
+	ASSERT_INT_EQ(convtime("2s"), 2);
+	ASSERT_INT_EQ(convtime("3m"), 180);
+	ASSERT_INT_EQ(convtime("1m30"), 90);
+	ASSERT_INT_EQ(convtime("1m30s"), 90);
+	ASSERT_INT_EQ(convtime("1h1s"), 3601);
+	ASSERT_INT_EQ(convtime("1h30m"), 90 * 60);
+	ASSERT_INT_EQ(convtime("1d"), 24 * 60 * 60);
+	ASSERT_INT_EQ(convtime("1w"), 7 * 24 * 60 * 60);
+	ASSERT_INT_EQ(convtime("1w2d3h4m5"), 788645);
+	ASSERT_INT_EQ(convtime("1w2d3h4m5s"), 788645);
+	/* any negative number or error returns -1 */
+	ASSERT_INT_EQ(convtime("-1"),  -1);
+	ASSERT_INT_EQ(convtime(""),  -1);
+	ASSERT_INT_EQ(convtime("trout"),  -1);
+	ASSERT_INT_EQ(convtime("-77"),  -1);
+	/* boundary conditions */
+	snprintf(buf, sizeof buf, "%llu", (long long unsigned)INT_MAX);
+	ASSERT_INT_EQ(convtime(buf), INT_MAX);
+	snprintf(buf, sizeof buf, "%llu", (long long unsigned)INT_MAX + 1);
+	ASSERT_INT_EQ(convtime(buf), -1);
+	ASSERT_INT_EQ(convtime("3550w5d3h14m7s"), 2147483647);
+#if INT_MAX == 2147483647
+	ASSERT_INT_EQ(convtime("3550w5d3h14m8s"), -1);
+#endif
+	TEST_DONE();
+}
diff --git a/regress/unittests/misc/test_expand.c b/regress/unittests/misc/test_expand.c
new file mode 100644
index 000000000..2a5e1bf1a
--- /dev/null
+++ b/regress/unittests/misc/test_expand.c
@@ -0,0 +1,86 @@
+/* 	$OpenBSD: test_expand.c,v 1.1 2021/03/19 03:25:01 djm Exp $ */
+/*
+ * Regress test for misc string expansion functions.
+ *
+ * Placed in the public domain.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "test_helper.h"
+
+#include "log.h"
+#include "misc.h"
+
+void test_expand(void);
+
+void
+test_expand(void)
+{
+	int parseerr;
+	char *ret;
+
+	TEST_START("dollar_expand");
+	ASSERT_INT_EQ(setenv("FOO", "bar", 1), 0);
+	ASSERT_INT_EQ(setenv("BAR", "baz", 1), 0);
+	ASSERT_INT_EQ(unsetenv("BAZ"), 0);
+#define ASSERT_DOLLAR_EQ(x, y) do { \
+	char *str = dollar_expand(NULL, (x)); \
+	ASSERT_STRING_EQ(str, (y)); \
+	free(str); \
+} while(0)
+	ASSERT_DOLLAR_EQ("${FOO}", "bar");
+	ASSERT_DOLLAR_EQ(" ${FOO}", " bar");
+	ASSERT_DOLLAR_EQ("${FOO} ", "bar ");
+	ASSERT_DOLLAR_EQ(" ${FOO} ", " bar ");
+	ASSERT_DOLLAR_EQ("${FOO}${BAR}", "barbaz");
+	ASSERT_DOLLAR_EQ(" ${FOO} ${BAR}", " bar baz");
+	ASSERT_DOLLAR_EQ("${FOO}${BAR} ", "barbaz ");
+	ASSERT_DOLLAR_EQ(" ${FOO} ${BAR} ", " bar baz ");
+	ASSERT_DOLLAR_EQ("$", "$");
+	ASSERT_DOLLAR_EQ(" $", " $");
+	ASSERT_DOLLAR_EQ("$ ", "$ ");
+
+	/* suppress error messages for error handing tests */
+	log_init("test_misc", SYSLOG_LEVEL_QUIET, SYSLOG_FACILITY_AUTH, 1);
+	/* error checking, non existent variable */
+	ret = dollar_expand(&parseerr, "a${BAZ}");
+	ASSERT_PTR_EQ(ret, NULL); ASSERT_INT_EQ(parseerr, 0);
+	ret = dollar_expand(&parseerr, "${BAZ}b");
+	ASSERT_PTR_EQ(ret, NULL); ASSERT_INT_EQ(parseerr, 0);
+	ret = dollar_expand(&parseerr, "a${BAZ}b");
+	ASSERT_PTR_EQ(ret, NULL); ASSERT_INT_EQ(parseerr, 0);
+	/* invalid format */
+	ret = dollar_expand(&parseerr, "${");
+	ASSERT_PTR_EQ(ret, NULL); ASSERT_INT_EQ(parseerr, 1);
+	ret = dollar_expand(&parseerr, "${F");
+	ASSERT_PTR_EQ(ret, NULL); ASSERT_INT_EQ(parseerr, 1);
+	ret = dollar_expand(&parseerr, "${FO");
+	ASSERT_PTR_EQ(ret, NULL); ASSERT_INT_EQ(parseerr, 1);
+	/* empty variable name */
+	ret = dollar_expand(&parseerr, "${}");
+	ASSERT_PTR_EQ(ret, NULL); ASSERT_INT_EQ(parseerr, 1);
+	/* restore loglevel to default */
+	log_init("test_misc", SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_AUTH, 1);
+	TEST_DONE();
+
+	TEST_START("percent_expand");
+	ASSERT_STRING_EQ(percent_expand("%%", "%h", "foo", NULL), "%");
+	ASSERT_STRING_EQ(percent_expand("%h", "h", "foo", NULL), "foo");
+	ASSERT_STRING_EQ(percent_expand("%h ", "h", "foo", NULL), "foo ");
+	ASSERT_STRING_EQ(percent_expand(" %h", "h", "foo", NULL), " foo");
+	ASSERT_STRING_EQ(percent_expand(" %h ", "h", "foo", NULL), " foo ");
+	ASSERT_STRING_EQ(percent_expand(" %a%b ", "a", "foo", "b", "bar", NULL),
+	    " foobar ");
+	TEST_DONE();
+
+	TEST_START("percent_dollar_expand");
+	ASSERT_STRING_EQ(percent_dollar_expand("%h${FOO}", "h", "foo", NULL),
+	    "foobar");
+	TEST_DONE();
+}
diff --git a/regress/unittests/misc/test_parse.c b/regress/unittests/misc/test_parse.c
new file mode 100644
index 000000000..6fa4558e2
--- /dev/null
+++ b/regress/unittests/misc/test_parse.c
@@ -0,0 +1,82 @@
+/* 	$OpenBSD: test_parse.c,v 1.1 2021/03/19 03:25:01 djm Exp $ */
+/*
+ * Regress test for misc user/host/URI parsing functions.
+ *
+ * Placed in the public domain.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "test_helper.h"
+
+#include "log.h"
+#include "misc.h"
+
+void test_parse(void);
+
+void
+test_parse(void)
+{
+	int port;
+	char *user, *host, *path;
+
+	TEST_START("misc_parse_user_host_path");
+	ASSERT_INT_EQ(parse_user_host_path("someuser@some.host:some/path",
+	    &user, &host, &path), 0);
+	ASSERT_STRING_EQ(user, "someuser");
+	ASSERT_STRING_EQ(host, "some.host");
+	ASSERT_STRING_EQ(path, "some/path");
+	free(user); free(host); free(path);
+	TEST_DONE();
+
+	TEST_START("misc_parse_user_ipv4_path");
+	ASSERT_INT_EQ(parse_user_host_path("someuser@1.22.33.144:some/path",
+	    &user, &host, &path), 0);
+	ASSERT_STRING_EQ(user, "someuser");
+	ASSERT_STRING_EQ(host, "1.22.33.144");
+	ASSERT_STRING_EQ(path, "some/path");
+	free(user); free(host); free(path);
+	TEST_DONE();
+
+	TEST_START("misc_parse_user_[ipv4]_path");
+	ASSERT_INT_EQ(parse_user_host_path("someuser@[1.22.33.144]:some/path",
+	    &user, &host, &path), 0);
+	ASSERT_STRING_EQ(user, "someuser");
+	ASSERT_STRING_EQ(host, "1.22.33.144");
+	ASSERT_STRING_EQ(path, "some/path");
+	free(user); free(host); free(path);
+	TEST_DONE();
+
+	TEST_START("misc_parse_user_[ipv4]_nopath");
+	ASSERT_INT_EQ(parse_user_host_path("someuser@[1.22.33.144]:",
+	    &user, &host, &path), 0);
+	ASSERT_STRING_EQ(user, "someuser");
+	ASSERT_STRING_EQ(host, "1.22.33.144");
+	ASSERT_STRING_EQ(path, ".");
+	free(user); free(host); free(path);
+	TEST_DONE();
+
+	TEST_START("misc_parse_user_ipv6_path");
+	ASSERT_INT_EQ(parse_user_host_path("someuser@[::1]:some/path",
+	    &user, &host, &path), 0);
+	ASSERT_STRING_EQ(user, "someuser");
+	ASSERT_STRING_EQ(host, "::1");
+	ASSERT_STRING_EQ(path, "some/path");
+	free(user); free(host); free(path);
+	TEST_DONE();
+
+	TEST_START("misc_parse_uri");
+	ASSERT_INT_EQ(parse_uri("ssh", "ssh://someuser@some.host:22/some/path",
+	    &user, &host, &port, &path), 0);
+	ASSERT_STRING_EQ(user, "someuser");
+	ASSERT_STRING_EQ(host, "some.host");
+	ASSERT_INT_EQ(port, 22);
+	ASSERT_STRING_EQ(path, "some/path");
+	free(user); free(host); free(path);
+	TEST_DONE();
+}