blogc: funcvars: code simplified, added tests

1 files changed, 84 insertions, 0 deletions

diff --git a/tests/blogc/check_funcvars.c b/tests/blogc/check_funcvars.c
new file mode 100644
index 0000000..153a870
--- /dev/null
+++ b/tests/blogc/check_funcvars.c
@@ -0,0 +1,84 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "../../src/common/error.h"
+#include "../../src/common/utils.h"
+#include "../../src/blogc/funcvars.h"
+
+
+char*
+__wrap_bc_file_get_contents(const char *path, bool utf8, size_t *len, bc_error_t **err)
+{
+    assert_string_equal(path, "/proc/1/cgroup");
+    assert_false(utf8);
+    char *rv = mock_type(char*);
+    *len = strlen(rv);
+    bc_error_t *e = mock_type(bc_error_t*);
+    if (e != NULL)
+        *err = e;
+    return rv;
+}
+
+
+static void
+test_funcvars_eval(void **state)
+{
+    bc_trie_t *t = bc_trie_new(free);
+    blogc_funcvars_eval(t, NULL);
+    blogc_funcvars_eval(t, "");
+    blogc_funcvars_eval(t, "BOLA");
+    assert_int_equal(bc_trie_size(t), 0);
+
+    bc_trie_insert(t, "BOLA", bc_strdup("GUDA"));
+    blogc_funcvars_eval(t, "BOLA");
+    assert_int_equal(bc_trie_size(t), 1);
+
+    bc_trie_free(t);
+}
+
+
+static void
+test_funcvars_eval_mocked(void **state)
+{
+    bc_trie_t *t = bc_trie_new(free);
+
+    // this is the only function that isn't hidden behind conditional macros
+    // as of when this test was written. the other functions should be tested
+    // separately
+    will_return(__wrap_bc_file_get_contents, bc_strdup("asd/docker/asd"));
+    will_return(__wrap_bc_file_get_contents, NULL);
+    blogc_funcvars_eval(t, "BLOGC_SYSINFO_INSIDE_DOCKER");
+    assert_string_equal(bc_trie_lookup(t, "BLOGC_SYSINFO_INSIDE_DOCKER"), "1");
+    assert_int_equal(bc_trie_size(t), 1);
+
+    // this specific function call is cached, so calling it again should not
+    // call bc_file_get_contents_again
+    blogc_funcvars_eval(t, "BLOGC_SYSINFO_INSIDE_DOCKER");
+    assert_string_equal(bc_trie_lookup(t, "BLOGC_SYSINFO_INSIDE_DOCKER"), "1");
+    assert_int_equal(bc_trie_size(t), 1);
+
+    bc_trie_free(t);
+}
+
+
+int
+main(void)
+{
+    const UnitTest tests[] = {
+        unit_test(test_funcvars_eval),
+        unit_test(test_funcvars_eval_mocked),
+    };
+    return run_tests(tests);
+}