From ff31c3275fbf57e1e5edef9c2926f2bd23ec8512 Mon Sep 17 00:00:00 2001
From: Jacob Champion <pchampion@vmware.com>
Date: Thu, 10 Feb 2022 14:41:04 -0800
Subject: [PATCH v2 2/2] WIP: add regression test for PQsslAttribute()

---
 src/interfaces/libpq/test/.gitignore   |  1 +
 src/interfaces/libpq/test/Makefile     |  5 +++-
 src/interfaces/libpq/test/testclient.c | 37 ++++++++++++++++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 src/interfaces/libpq/test/testclient.c

diff --git a/src/interfaces/libpq/test/.gitignore b/src/interfaces/libpq/test/.gitignore
index 5387b3b6d9..a6be825f3c 100644
--- a/src/interfaces/libpq/test/.gitignore
+++ b/src/interfaces/libpq/test/.gitignore
@@ -1,3 +1,4 @@
+/testclient
 /uri-regress
 /regress.diff
 /regress.out
diff --git a/src/interfaces/libpq/test/Makefile b/src/interfaces/libpq/test/Makefile
index 4832fab9d2..10cf3a34df 100644
--- a/src/interfaces/libpq/test/Makefile
+++ b/src/interfaces/libpq/test/Makefile
@@ -2,6 +2,8 @@ subdir = src/interfaces/libpq/test
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
+export with_ssl
+
 ifeq ($(PORTNAME), win32)
 LDFLAGS += -lws2_32
 endif
@@ -9,13 +11,14 @@ endif
 override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
 LDFLAGS_INTERNAL += $(libpq_pgport)
 
-PROGS = uri-regress
+PROGS = testclient uri-regress
 
 all: $(PROGS)
 
 installcheck: all
 	SRCDIR='$(top_srcdir)' SUBDIR='$(subdir)' \
 		   $(PERL) $(top_srcdir)/$(subdir)/regress.pl
+	$(prove_installcheck)
 
 clean distclean maintainer-clean:
 	rm -f $(PROGS) *.o
diff --git a/src/interfaces/libpq/test/testclient.c b/src/interfaces/libpq/test/testclient.c
new file mode 100644
index 0000000000..2c730d83fa
--- /dev/null
+++ b/src/interfaces/libpq/test/testclient.c
@@ -0,0 +1,37 @@
+/*
+ * testclient.c
+ *		A test program for the libpq public API
+ *
+ * Copyright (c) 2022, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *		src/interfaces/libpq/test/testclient.c
+ */
+
+#include "postgres_fe.h"
+
+#include "libpq-fe.h"
+
+static void
+print_ssl_library()
+{
+	const char *lib = PQsslAttribute(NULL, "library");
+
+	if (!lib)
+		fprintf(stderr, "SSL is not enabled\n");
+	else
+		printf("%s\n", lib);
+}
+
+int
+main(int argc, char *argv[])
+{
+	if ((argc > 1) && !strcmp(argv[1], "--ssl"))
+	{
+		print_ssl_library();
+		return 0;
+	}
+
+	printf("currently only --ssl is supported\n");
+	return 1;
+}
-- 
2.25.1