Add unit tests for conf parsing and its helpers

test/unit/conf_init_0.c

@@ -0,0 +1,22 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_default_dirty_decay_ms) {
+#ifdef _WIN32
+	test_skip("not supported on win32");
+#endif
+
+	ssize_t dirty_decay_ms;
+	size_t sz = sizeof(dirty_decay_ms);
+
+	int err = mallctl("opt.dirty_decay_ms", &dirty_decay_ms, &sz, NULL, 0);
+	assert_d_eq(err, 0, "Unexpected mallctl failure");
+	expect_zd_eq(dirty_decay_ms, 10000,
+	    "dirty_decay_ms should be the default (10000)"
+	    " when no global variables are set");
+}
+TEST_END
+
+int
+main(void) {
+	return test(test_default_dirty_decay_ms);
+}