Add test for constant sized arrays

ash/tests/constant_size_arrays.rs

@@ -0,0 +1,41 @@
+extern crate ash;
+
+use ash::vk::{PhysicalDeviceProperties, PipelineColorBlendStateCreateInfo};
+
+#[test]
+fn assert_struct_field_is_array() {
+    let pipeline_cache_uuid: [u8; 16] = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
+
+    let _ = PhysicalDeviceProperties::builder().pipeline_cache_uuid(pipeline_cache_uuid);
+
+    let _ = PhysicalDeviceProperties {
+        pipeline_cache_uuid,
+        ..Default::default()
+    };
+
+    let blend_constants: [f32; 4] = [0.0, 0.0, 0.0, 0.0];
+
+    let _ = PipelineColorBlendStateCreateInfo::builder().blend_constants(blend_constants);
+
+    let _ = PipelineColorBlendStateCreateInfo {
+        blend_constants,
+        ..Default::default()
+    };
+}
+
+#[test]
+#[allow(dead_code)]
+fn assert_ffi_array_param_is_pointer() {
+    use ash::version::DeviceV1_0;
+    unsafe {
+        // don't run it, just make sure it compiles
+        if false {
+            let device: ash::Device = std::mem::uninitialized();
+            let cmd_buffer = std::mem::uninitialized();
+
+            let blend_constants: [f32; 4] = [0.0, 0.0, 0.0, 0.0];
+
+            device.cmd_set_blend_constants(cmd_buffer, &blend_constants);
+        }
+    }
+}