nightmaremail

commit 0609d1b3eb8381cf3144f362c3e7bad668d5511c
parent edb4c964489bdf862bf0db918ebe264bf12bb3e3
Author: Rolf Eike Beer <eike@sf-mail.de>
Date:   Fri,  8 May 2020 21:16:50 +0200

tests: check stralloc allocation size behavior

Diffstat:
M
tests/unittest_stralloc.c
 | 
54
++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 54 insertions(+), 0 deletions(-)
diff --git a/tests/unittest_stralloc.c b/tests/unittest_stralloc.c
@@ -17,12 +17,66 @@ START_TEST(test_stralloc_thingy)
 }
 END_TEST
 
+START_TEST(test_stralloc_sizes)
+{
+  stralloc thingy = {0};
+  const char *input = "thingy";
+  unsigned int olen;
+
+  // make room for exactly 42 bytes
+  int r = stralloc_ready(&thingy, 42);
+  ck_assert_int_eq(r, 1);
+  ck_assert_uint_eq(thingy.len, 0);
+  ck_assert_uint_eq(thingy.a, 42);
+  // make sure that there is room for 42 more bytes
+  // given that there are 42 bytes in it and nothing is used this does nothing
+  r = stralloc_readyplus(&thingy, 42);
+  ck_assert_int_eq(r, 1);
+  ck_assert_uint_eq(thingy.len, 0);
+  ck_assert_uint_eq(thingy.a, 42);
+  // make sure there is room for 16 more bytes
+  // there is already more room available, so this does nothing
+  r = stralloc_readyplus(&thingy, 16);
+  ck_assert_int_eq(r, 1);
+  ck_assert_uint_eq(thingy.len, 0);
+  ck_assert_uint_eq(thingy.a, 42);
+
+  r = stralloc_copys(&thingy,input);
+  ck_assert_int_eq(r, 1);
+  ck_assert_uint_eq(thingy.len, strlen(input));
+  ck_assert_uint_eq(thingy.a, 42);
+
+  r = stralloc_0(&thingy);
+  ck_assert_int_eq(r, 1);
+  ck_assert_uint_eq(thingy.len, strlen(input) + 1);
+  ck_assert_uint_eq(thingy.a, 42);
+
+  // make sure that there is room for 42 more bytes
+  r = stralloc_readyplus(&thingy, 42);
+  ck_assert_int_eq(r, 1);
+  ck_assert_uint_eq(thingy.len, strlen(input) + 1);
+  ck_assert_uint_ge(thingy.a, thingy.len + 42);
+  olen = thingy.a;
+
+  // another stralloc_ready should not touch anything
+  r = stralloc_ready(&thingy, 42);
+  ck_assert_int_eq(r, 1);
+  ck_assert_uint_eq(thingy.len, strlen(input) + 1);
+  ck_assert_uint_ge(thingy.a, olen);
+
+  ck_assert_str_eq(input, thingy.s);
+
+  alloc_free(thingy.s);
+}
+END_TEST
+
 TCase
 *stralloc_something(void)
 {
   TCase *tc = tcase_create("basic operations");
 
   tcase_add_test(tc, test_stralloc_thingy);
+  tcase_add_test(tc, test_stralloc_sizes);
 
   return tc;
 }