From 2e1ff80dab0cee0f197dccc9c5dd2f3b9afdb168 Mon Sep 17 00:00:00 2001
From: Tomasz Kramkowski <tk@the-tk.com>
Date: Thu, 20 Aug 2020 21:34:34 +0100
Subject: init

---
 unpack_test.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 unpack_test.c

(limited to 'unpack_test.c')

diff --git a/unpack_test.c b/unpack_test.c
new file mode 100644
index 0000000..8eee6b3
--- /dev/null
+++ b/unpack_test.c
@@ -0,0 +1,110 @@
+#include <stdio.h>
+#include <stdbool.h>
+
+#include "pack.h"
+
+typedef bool test_func(void);
+
+struct test {
+	test_func *func;
+	char *desc;
+};
+
+#define TEST(name) bool test_##name(void)
+#define TEST_ENTRY(name, description) { test_##name, description }
+#define TEST_ENTRY_END { NULL, NULL }
+#define DATA(...) (unsigned char []){ __VA_ARGS__ }, sizeof (unsigned char []){ __VA_ARGS__ }
+#define CHECK(test) if (!(test)) { puts("! " #test); return false; }
+
+#define CHECK_UNPACK(data, fmt, ...) do { \
+	enum pack_status s = unpack(data, fmt, __VA_ARGS__); \
+	if (s != PACK_OK) { \
+		printf(__FILE__ ":%d unpack(" #data ", " #fmt ", ...) -> %s (%d)\n", __LINE__, pack_strerror(s), s); \
+		return false; \
+	} \
+} while (0)
+#define CHECK_EQUAL(a, b) if (a != b) { printf(__FILE__ ":%d %d != %d\n", __LINE__, a, b); return false; }
+
+TEST(schar)
+{
+	signed char c = __LINE__;
+	fprintf(stderr, "Address of c: %p\n", (void *)&c);
+	CHECK_UNPACK(DATA(0), "b", &c);
+	CHECK_EQUAL(c, 0);
+	CHECK_UNPACK(DATA(1), "b", &c);
+	CHECK_EQUAL(c, 1);
+	CHECK_UNPACK(DATA(127), "b", &c);
+	CHECK_EQUAL(c, 127);
+	CHECK_UNPACK(DATA(255), "b", &c);
+	CHECK_EQUAL(c, -1);
+	CHECK_UNPACK(DATA(128), "b", &c);
+	CHECK_EQUAL(c, -128);
+	return true;
+}
+
+TEST(uchar)
+{
+	unsigned char c = __LINE__;
+	fprintf(stderr, "Address of c: %p\n", (void *)&c);
+	CHECK_UNPACK(DATA(0), "B", &c);
+	CHECK_EQUAL(c, 0);
+	CHECK_UNPACK(DATA(1), "B", &c);
+	CHECK_EQUAL(c, 1);
+	CHECK_UNPACK(DATA(255), "B", &c);
+	CHECK_EQUAL(c, 255);
+	return true;
+}
+
+TEST(sshort)
+{
+	short s = __LINE__;
+	fprintf(stderr, "Address of s: %p\n", (void *)&s);
+	CHECK_UNPACK(DATA(0, 0), "h", &s);
+	CHECK_EQUAL(s, 0);
+	CHECK_UNPACK(DATA(0, 0), ">h", &s);
+	CHECK_EQUAL(s, 0);
+	CHECK_UNPACK(DATA(0, 0), "<h", &s);
+	CHECK_EQUAL(s, 0);
+	CHECK_UNPACK(DATA(0, 1), "h", &s);
+	CHECK_EQUAL(s, 1);
+	CHECK_UNPACK(DATA(0, 1), ">h", &s);
+	CHECK_EQUAL(s, 1);
+	CHECK_UNPACK(DATA(1, 0), "<h", &s);
+	CHECK_EQUAL(s, 1);
+	CHECK_UNPACK(DATA(0x7f, 0xff), "h", &s);
+	CHECK_EQUAL(s, 32767);
+	CHECK_UNPACK(DATA(0x7f, 0xff), ">h", &s);
+	CHECK_EQUAL(s, 32767);
+	CHECK_UNPACK(DATA(0xff, 0x7f), "<h", &s);
+	CHECK_EQUAL(s, 32767);
+	CHECK_UNPACK(DATA(0xff, 0xff), "h", &s);
+	CHECK_EQUAL(s, -1);
+	CHECK_UNPACK(DATA(0xff, 0xff), ">h", &s);
+	CHECK_EQUAL(s, -1);
+	CHECK_UNPACK(DATA(0xff, 0xff), "<h", &s);
+	CHECK_EQUAL(s, -1);
+	CHECK_UNPACK(DATA(0x80, 0x00), "h", &s);
+	CHECK_EQUAL(s, -32768);
+	CHECK_UNPACK(DATA(0x80, 0x00), ">h", &s);
+	CHECK_EQUAL(s, -32768);
+	CHECK_UNPACK(DATA(0x00, 0x80), "<h", &s);
+	CHECK_EQUAL(s, -32768);
+}
+
+TEST(ushort)
+{
+	unsigned short s;
+}
+
+int main(void)
+{
+	struct test tests[] = {
+		TEST_ENTRY(schar, "schar unpacking"),
+		TEST_ENTRY(uchar, "uchar unpacking"),
+		TEST_ENTRY(sshort, "sshort unpacking"),
+		TEST_ENTRY_END
+	};
+
+	for (int i = 0; tests[i].func != NULL; i++)
+		printf("%s %s\n", tests[i].func() ? " OK " : "FAIL", tests[i].desc);
+}
-- 
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