Merge pull request #1719 from cesanta/testq

Make mip_test fail with current queue algo

test/mip_test.c

@@ -2,15 +2,17 @@
 #include "mongoose.c"
 
 static void test_queue(void) {
-  uint8_t buf[sizeof(size_t) + 5];
+  static uint8_t buf[sizeof(size_t) + sizeof(uint16_t) + 3 ]; // fit 1 element but not 2
   uint16_t val = 1234;
-  struct queue q = {buf, sizeof(buf), 0, 0};
+  static struct queue q = {buf, sizeof(buf), 0, 0};
 
   // Write to an empty queue, and read back
   assert(q_avail(&q) == 0);
   assert(q_write(&q, &val, sizeof(val)) == true);
   assert(q_avail(&q) == sizeof(val));
   assert(q.head > q.tail);
+  // Only one element may fit
+  assert(q_write(&q, &val, sizeof(val)) == false);
   val = 0;
   assert(q_read(&q, &val) == sizeof(val));
   assert(val == 1234);
@@ -20,6 +22,8 @@ static void test_queue(void) {
   assert(q_write(&q, &val, sizeof(val)) == true);
   assert(q_avail(&q) == sizeof(val));
   assert(q.head < q.tail);
+  // Only one element may fit
+  assert(q_write(&q, &val, sizeof(val)) == false);
   val = 0;
   assert(q_read(&q, &val) == sizeof(val));
   assert(val == 1234);