Add source order test for headers that are siblings.

Author: reitermarkus

bindgen-tests/tests/expectations/tests/source-order.rs renamed to bindgen-tests/tests/expectations/tests/source-order-nested.rs

@@ -0,0 +1,7 @@
+// bindgen-flags: -- -Itests/headers/source-order-nested
+
+const int THIS_SHOULD_BE_FIRST = 1;
+
+#include "source-order-nested-2.h"
+
+extern int THIS_SHOULD_BE_FIFTH;

bindgen-tests/tests/expectations/tests/source-order-siblings.rs

@@ -2,6 +2,6 @@
 
 void THIS_SHOULD_BE_SECOND();
 
-#include "source-order-3.h"
+#include "source-order-nested-3.h"
 
 struct THIS_SHOULD_BE_FOURTH {};

bindgen-tests/tests/headers/source-order-nested.h

@@ -0,0 +1,6 @@
+// bindgen-flags: -- -Itests/headers/source-order-siblings
+
+const char* ROOT = "root";
+
+#include "a.h"
+#include "b.h"

bindgen-tests/tests/headers/source-order/source-order-2.h renamed to bindgen-tests/tests/headers/source-order-nested/source-order-nested-2.h

@@ -0,0 +1,5 @@
+#pragma once
+
+const char A = 'a';
+
+#include "aa.h"

bindgen-tests/tests/headers/source-order/source-order-3.h renamed to bindgen-tests/tests/headers/source-order-nested/source-order-nested-3.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void AA();

bindgen-tests/tests/headers/source-order-siblings.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#define B 'b'
+
+#include "bb.h"

bindgen-tests/tests/headers/source-order-siblings/a.h

@@ -0,0 +1,3 @@
+#pragma once
+
+struct BB {};