1 files changed, 52 insertions, 0 deletions
diff --git a/test/endian_str_test.cpp b/test/endian_str_test.cpp
index d9d01d15c5..82bb429d50 100644
--- a/test/endian_str_test.cpp
+++ b/test/endian_str_test.cpp
@@ -74,7 +74,59 @@ void test_uint()
     ASSERT(u64 == 0x090A0B0C0D0E0F10ULL);
 }
 
+void test_sint()
+{
+    std::stringstream str(std::ios::in | std::ios::out | std::ios::binary);
+
+    write_little(str, int8_t (-0x01));
+    write_little(str, int16_t(-0x0102));
+    write_little(str, int32_t(-0x01020304L));
+    write_little(str, int64_t(-0x0102030405060708LL));
+
+    write_big   (str, int8_t (-0x09));
+    write_big   (str, int16_t(-0x090A));
+    write_big   (str, int32_t(-0x090A0B0CL));
+    write_big   (str, int64_t(-0x090A0B0C0D0E0F10LL));
+
+    const char expected[] = { //meh, stupid narrowing conversions
+        '\xFF',
+        '\xFE', '\xFE',
+        '\xFC', '\xFC', '\xFD', '\xFE',
+        '\xF8', '\xF8', '\xF9', '\xFA', '\xFB', '\xFC', '\xFD', '\xFE',
+
+        '\xF7',
+        '\xF6', '\xF6',
+        '\xF6', '\xF5', '\xF4', '\xF4',
+        '\xF6', '\xF5', '\xF4', '\xF3', '\xF2', '\xF1', '\xF0', '\xF0',
+        0}; //Null terminator
+    ASSERT(str.str() == expected);
+
+    int8_t  i8;
+    int16_t i16;
+    int32_t i32;
+    int64_t i64;
+
+    read_little(str, i8);
+    ASSERT(i8 == -0x01);
+    read_little(str, i16);
+    ASSERT(i16 == -0x0102);
+    read_little(str, i32);
+    ASSERT(i32 == -0x01020304UL);
+    read_little(str, i64);
+    ASSERT(i64 == -0x0102030405060708ULL);
+
+    read_big(str, i8);
+    ASSERT(i8 == -0x09);
+    read_big(str, i16);
+    ASSERT(i16 == -0x090A);
+    read_big(str, i32);
+    ASSERT(i32 == -0x090A0B0CUL);
+    read_big(str, i64);
+    ASSERT(i64 == -0x090A0B0C0D0E0F10ULL);
+}
+
 int main()
 {
     test_uint();
+    test_sint();
 }