crates/svg-filters/src/lib.rs

@@ -5,4 +5,4 @@ pub mod types;
 pub use types::nodes::Node;
 
 #[cfg(test)]
-mod tests {}
+mod tests;

crates/svg-filters/src/tests.rs

@@ -0,0 +1,19 @@
+mod color_matrix;
+
+mod complex;
+mod gaussian_blur;
+mod offset;
+
+mod blend {}
+mod component_transfer {}
+mod composite {}
+mod convolve_matrix {}
+mod diffuse_lighting {}
+mod displacement_map {}
+mod flood {}
+mod image {}
+mod merge {}
+mod morphology {}
+mod specular_lighting {}
+mod tile {}
+mod turbulence {}

crates/svg-filters/src/tests/color_matrix.rs

@@ -0,0 +1,25 @@
+use crate::{
+    codegen::SvgDocument,
+    types::nodes::{primitives::color_matrix::ColorMatrixType, standard_input::StandardInput},
+};
+
+#[test]
+fn test_greyscale_channel_extraction() {
+    let mut doc = SvgDocument::new();
+    let greyscale = doc.create_filter("greyscale");
+
+    greyscale.color_matrix(
+        StandardInput::SourceGraphic,
+        ColorMatrixType::Matrix(Box::new([
+            1., 0., 0., 0., 0., //
+            1., 0., 0., 0., 0., //
+            1., 0., 0., 0., 0., //
+            0., 0., 0., 1., 0.,
+        ])),
+    );
+
+    assert_eq!(
+        doc.generate_svg(),
+        r#"<svg><filter id="greyscale"><feColorMatrix values="1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 1 0" in="SourceGraphic"/></filter></svg>"#
+    );
+}

crates/svg-filters/src/tests/complex.rs

@@ -0,0 +1,42 @@
+use crate::{
+    codegen::SvgDocument,
+    types::nodes::{primitives::color_matrix::ColorMatrixType, standard_input::StandardInput},
+};
+
+#[test]
+fn test_chrom_abb() {
+    let mut doc = SvgDocument::new();
+    let chromabb = doc.create_filter("chromabb_gen");
+
+    let chan_r = chromabb.color_matrix(
+        StandardInput::SourceGraphic,
+        ColorMatrixType::Matrix(Box::new([
+            1., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 1., 0.,
+        ])),
+    );
+    let offset_r = chromabb.offset(chan_r, 25., 0.);
+    let blur_r = chromabb.gaussian_blur_xy(offset_r, 5, 0);
+
+    let chan_b = chromabb.color_matrix(
+        StandardInput::SourceGraphic,
+        ColorMatrixType::Matrix(Box::new([
+            0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 1., 0., 0., 0., 0., 0., 1., 0.,
+        ])),
+    );
+    let offset_b = chromabb.offset(chan_b, -25., 0.);
+    let blur_b = chromabb.gaussian_blur_xy(offset_b, 5, 0);
+
+    let composite_rb = chromabb.composite_arithmetic(blur_r, blur_b, 0., 1., 1., 0.);
+
+    let chan_g = chromabb.color_matrix(
+        StandardInput::SourceGraphic,
+        ColorMatrixType::Matrix(Box::new([
+            0., 0., 0., 0., 0., 0., 1., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 1., 0.,
+        ])),
+    );
+    chromabb.composite_arithmetic(composite_rb, chan_g, 0., 1., 1., 0.);
+    assert_eq!(
+        doc.generate_svg(),
+        r#"<svg><filter id="chromabb_gen"><feColorMatrix values="0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0" in="SourceGraphic" result="r13"/><feColorMatrix values="0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0" in="SourceGraphic" result="r9"/><feOffset dx="-25" dy="0" in="r9" result="r10"/><feGaussianBlur stdDeviation="5 0" in="r10" result="r11"/><feColorMatrix values="1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0" in="SourceGraphic" result="r6"/><feOffset dx="25" dy="0" in="r6" result="r7"/><feGaussianBlur stdDeviation="5 0" in="r7" result="r8"/><feComposite operator="arithmetic" k1="0" k2="1" k3="1" k4="0" in="r8" in2="r11" result="r12"/><feComposite operator="arithmetic" k1="0" k2="1" k3="1" k4="0" in="r12" in2="r13"/></filter></svg>"#
+    );
+}

crates/svg-filters/src/tests/gaussian_blur.rs

@@ -0,0 +1,13 @@
+use crate::{codegen::SvgDocument, types::nodes::standard_input::StandardInput};
+
+#[test]
+fn test_simple_blur() {
+    let mut doc = SvgDocument::new();
+    let blur = doc.create_filter("blur");
+
+    blur.gaussian_blur_xy(StandardInput::SourceGraphic, 30, 30);
+    assert_eq!(
+        doc.generate_svg(),
+        r#"<svg><filter id="blur"><feGaussianBlur stdDeviation="30 30" in="SourceGraphic"/></filter></svg>"#
+    )
+}

crates/svg-filters/src/tests/offset.rs

@@ -0,0 +1,14 @@
+use crate::{codegen::SvgDocument, types::nodes::standard_input::StandardInput};
+
+#[test]
+fn test_offset_simple() {
+    let mut doc = SvgDocument::new();
+    let mut offset = doc.create_filter("offset");
+
+    offset.offset(StandardInput::SourceGraphic, 25., -25.);
+
+    assert_eq!(
+        doc.generate_svg(),
+        r#"<svg><filter id="offset"><feOffset dx="25" dy="-25" in="SourceGraphic"/></filter></svg>"#
+    )
+}