From 3289aef6dd90453f46f0ba3102ae184734374dc7 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Fri, 1 Mar 2019 21:09:38 -0500
Subject: skeleton tests for all C89 headers

---
 Makefile |  3 +++
 main.c   |  6 +++---
 stdio.c  | 34 ++++++++++++++++++++++++++++++++++
 stdlib.c | 26 ++++++++++++++++++++++++++
 string.c | 13 +++++++++++++
 5 files changed, 79 insertions(+), 3 deletions(-)
 create mode 100644 stdio.c
 create mode 100644 stdlib.c
 create mode 100644 string.c

diff --git a/Makefile b/Makefile
index 304851a..61bd4d3 100644
--- a/Makefile
+++ b/Makefile
@@ -19,6 +19,9 @@ TESTOBJS=main.o \
 	stdarg.o \
 	stdbool.o \
 	stddef.o \
+	stdio.o \
+	stdlib.o \
+	string.o \
 	time.o \
 	test.o
 
diff --git a/main.c b/main.c
index 316bd83..3382797 100644
--- a/main.c
+++ b/main.c
@@ -58,10 +58,10 @@ int main(int argc, char *argv[])
 	test_stdbool_h();
 	test_stddef_h();
 	/* test_stdint_h(); */
-	/* test_stdio_h(); */
-	/* test_stdlib_h(); */
+	test_stdio_h();
+	test_stdlib_h();
 	/* test_stdnoreturn_h(); */
-	/* test_string_h(); */
+	test_string_h();
 	/* test_tgmath_h(); */
 	/* test_threads_h(); */
 	test_time_h();
diff --git a/stdio.c b/stdio.c
new file mode 100644
index 0000000..713b16b
--- /dev/null
+++ b/stdio.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include "test.h"
+
+void test_stdio_h(void)
+{
+	FILE *file;
+	fpos_t fpos;
+	size_t size;
+
+	int buftypes[] = {
+		_IOFBF,
+		_IOLBF,
+		_IONBF,
+	};
+
+	int seeks[] = {
+		SEEK_CUR,
+		SEEK_END,
+		SEEK_SET,
+	};
+
+	testing_header("stdio.h");
+
+	test_distinct(buftypes);
+	test_min(BUFSIZ, 256);
+	test_defined(EOF);
+	test_min(FILENAME_MAX, 1);
+	test_min(FOPEN_MAX, 8);
+	test_min(L_tmpnam, 1);
+	test_true(NULL == 0);
+	test_min(TMP_MAX, 25);
+
+	testing_end();
+}
diff --git a/stdlib.c b/stdlib.c
new file mode 100644
index 0000000..1b59e1c
--- /dev/null
+++ b/stdlib.c
@@ -0,0 +1,26 @@
+#include <stdlib.h>
+#include <limits.h>
+#include "test.h"
+
+void test_stdlib_h(void)
+{
+	div_t div;
+	ldiv_t ldiv;
+	size_t size;
+	wchar_t wchar;
+
+	int exit_statuses[] = {
+		EXIT_FAILURE,
+		EXIT_SUCCESS,
+	};
+
+	testing_header("stdlib.h");
+
+	test_distinct(exit_statuses);
+	test_min(MB_CUR_MAX, 1);
+	test_max(MB_CUR_MAX, MB_LEN_MAX);
+	test_true(NULL == 0);
+	test_min(RAND_MAX, 32767);
+
+	testing_end();
+}
diff --git a/string.c b/string.c
new file mode 100644
index 0000000..86a270c
--- /dev/null
+++ b/string.c
@@ -0,0 +1,13 @@
+#include <string.h>
+#include "test.h"
+
+void test_string_h(void)
+{
+	size_t size;
+
+	testing_header("string.h");
+
+	test_true(NULL == 0);
+
+	testing_end();
+}
-- 
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