Binding for set_image_background_color

tests/lib.rs

@@ -16,7 +16,7 @@
 
 extern crate magick_rust;
 
-use magick_rust::{MagickWand, magick_wand_genesis, MetricType, ColorspaceType, FilterType, DitherMethod};
+use magick_rust::{MagickWand, magick_wand_genesis, MetricType, ColorspaceType, FilterType, DitherMethod, PixelWand, bindings};
 
 use std::error::Error;
 use std::fs::File;
@@ -263,3 +263,37 @@ fn test_color_reduction() {
     assert_eq!(wand.get_image_width() * wand.get_image_height(),
                histogram.iter().fold(0, |total_colors, wand| total_colors + wand.get_color_count()));
 }
+
+#[test]	
+fn test_set_image_background_color() {
+    START.call_once(|| {
+		
+        magick_wand_genesis();
+		
+    });
+		
+    let wand = MagickWand::new();
+		
+    assert!(wand.read_image("tests/data/rust.png").is_ok());
+		
+		
+    let mut pw = PixelWand::new();
+		
+    pw.set_color("#0000FF").unwrap();
+		
+		
+    wand.set_image_background_color(&pw).unwrap();
+		
+		
+    wand.set_image_alpha_channel(bindings::AlphaChannelOption::RemoveAlphaChannel).unwrap();
+		
+		
+    let blob = wand.write_image_blob("rgb").unwrap();
+		
+		
+    assert_eq!(0u8, blob[0]);
+		
+    assert_eq!(0u8, blob[1]);
+		
+    assert_eq!(255u8, blob[2]);
+}