tests: Prefer assert_non_null() over assert_false()

This also replaces some occurrences of assert_true() with assert_null()

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

tests/client/torture_knownhosts.c

@@ -128,7 +128,7 @@ static void torture_knownhosts_port(void **state) {
     file = fopen(known_hosts_file, "r");
     assert_non_null(file);
     p = fgets(buffer, sizeof(buffer), file);
-    assert_false(p == NULL);
+    assert_non_null(p);
     fclose(file);
     buffer[sizeof(buffer) - 1] = '\0';
     assert_non_null(strstr(buffer,"[127.0.0.10]:1234 "));

tests/client/torture_sftp_dir.c

@@ -66,7 +66,7 @@ static void torture_sftp_mkdir(void **state) {
     char tmpdir[128] = {0};
     int rc;
 
-    assert_false(t == NULL);
+    assert_non_null(t);
 
     snprintf(tmpdir, sizeof(tmpdir) - 1, "%s/mkdir_test", t->testdir);
 

tests/client/torture_sftp_ext.c

@@ -11,10 +11,10 @@ static void torture_sftp_ext_new(void **state) {
     (void) state;
 
     x = sftp_ext_new();
-    assert_false(x == NULL);
+    assert_non_null(x);
     assert_int_equal(x->count, 0);
-    assert_true(x->name == NULL);
-    assert_true(x->data == NULL);
+    assert_null(x->name);
+    assert_null(x->data);
 
     sftp_ext_free(x);
 }

tests/unittests/torture_callbacks.c

@@ -23,7 +23,7 @@ static int setup(void **state)
     struct ssh_callbacks_struct *cb;
 
     cb = malloc(sizeof(struct ssh_callbacks_struct));
-    assert_false(cb == NULL);
+    assert_non_null(cb);
     ZERO_STRUCTP(cb);
 
     cb->userdata = (void *) 0x0badc0de;

tests/unittests/torture_misc.c

@@ -44,7 +44,7 @@ static void torture_get_user_home_dir(void **state) {
     (void) state;
 
     user = ssh_get_user_home_dir();
-    assert_false(user == NULL);
+    assert_non_null(user);
 #ifndef _WIN32
     assert_string_equal(user, pwd->pw_dir);
 #endif /* _WIN32 */
@@ -109,7 +109,7 @@ static void torture_path_expand_tilde_win(void **state) {
     (void) state;
 
     d = ssh_path_expand_tilde("~\\.ssh");
-    assert_false(d == NULL);
+    assert_non_null(d);
     print_message("Expanded path: %s\n", d);
     free(d);