tests: Add negative tests for constructor/destructor generation behavior.

Author: emilio

tests/expectations/tests/gen-constructors-neg.rs

@@ -0,0 +1,21 @@
+/* automatically generated by rust-bindgen */
+
+
+#![allow(non_snake_case)]
+
+
+#[repr(C)]
+#[derive(Debug, Default, Copy)]
+pub struct Foo {
+    pub _address: u8,
+}
+#[test]
+fn bindgen_test_layout_Foo() {
+    assert_eq!(::std::mem::size_of::<Foo>() , 1usize , concat ! (
+               "Size of: " , stringify ! ( Foo ) ));
+    assert_eq! (::std::mem::align_of::<Foo>() , 1usize , concat ! (
+                "Alignment of " , stringify ! ( Foo ) ));
+}
+impl Clone for Foo {
+    fn clone(&self) -> Self { *self }
+}

tests/expectations/tests/gen-destructors-neg.rs

@@ -0,0 +1,23 @@
+/* automatically generated by rust-bindgen */
+
+
+#![allow(non_snake_case)]
+
+
+#[repr(C)]
+#[derive(Debug, Default)]
+pub struct Foo {
+    pub bar: ::std::os::raw::c_int,
+}
+#[test]
+fn bindgen_test_layout_Foo() {
+    assert_eq!(::std::mem::size_of::<Foo>() , 4usize , concat ! (
+               "Size of: " , stringify ! ( Foo ) ));
+    assert_eq! (::std::mem::align_of::<Foo>() , 4usize , concat ! (
+                "Alignment of " , stringify ! ( Foo ) ));
+    assert_eq! (unsafe {
+                & ( * ( 0 as * const Foo ) ) . bar as * const _ as usize } ,
+                0usize , concat ! (
+                "Alignment of field: " , stringify ! ( Foo ) , "::" ,
+                stringify ! ( bar ) ));
+}

tests/headers/gen-constructors-neg.hpp

@@ -0,0 +1,6 @@
+// bindgen-flags: --generate types,functions
+
+class Foo {
+ public:
+  Foo(int a);
+};

tests/headers/gen-destructors-neg.hpp

@@ -0,0 +1,9 @@
+// bindgen-flags: --generate types,functions
+//
+// NB: This is intended to _not_ generate destructors.
+
+class Foo {
+  int bar;
+ public:
+  ~Foo();
+};