gradient_spec.rb in prawn-svg-0.31.0

- old
+ new

@@ -7,11 +7,11 @@
   before do
     allow(element).to receive(:assert_compatible_prawn_version)
     element.process
   end
 
-  describe "object bounding box" do
+  describe "object bounding box with linear gradient" do
     let(:svg) do
       <<-SVG
         <linearGradient id="flag" x1="0" x2="0.2" y1="0" y2="1">
           <stop offset="25%" stop-color="red"/>
           <stop offset="50%" stop-color="white"/>
@@ -38,13 +38,41 @@
       arguments = element.gradient_arguments(double(bounding_box: nil))
       expect(arguments).to be nil
     end
   end
 
-  describe "user space on use" do
+  describe "object bounding box with radial gradient" do
     let(:svg) do
       <<-SVG
+        <radialGradient id="flag" cx="0" cy="0.2" fx="0.5" r="0.8">
+          <stop offset="25%" stop-color="red"/>
+          <stop offset="50%" stop-color="white"/>
+          <stop offset="75%" stop-color="blue"/>
+        </radialGradient>
+      SVG
+    end
+
+    it "is stored in the document gradients table" do
+      expect(document.gradients["flag"]).to eq element
+    end
+
+    it "returns correct gradient arguments for an element" do
+      arguments = element.gradient_arguments(double(bounding_box: [100, 100, 200, 0]))
+      expect(arguments).to eq(
+        from: [150, 80],
+        to:   [100, 80],
+        r1:   0,
+        r2:   Math.sqrt((0.8 * 100) ** 2 + (0.8 * 100) ** 2),
+        stops: [[0, "ff0000"], [0.25, "ff0000"], [0.5, "ffffff"], [0.75, "0000ff"], [1, "0000ff"]],
+        apply_transformations: true,
+      )
+    end
+  end
+
+  describe "user space on use with linear gradient" do
+    let(:svg) do
+      <<-SVG
         <linearGradient id="flag" gradientUnits="userSpaceOnUse" x1="100" y1="500" x2="200" y2="600">
           <stop offset="0" stop-color="red"/>
           <stop offset="1" stop-color="blue"/>
         </linearGradient>
       SVG
@@ -53,9 +81,32 @@
     it "returns correct gradient arguments for an element" do
       arguments = element.gradient_arguments(double)
       expect(arguments).to eq(
         from: [100.0, 100.0],
         to:   [200.0, 0.0],
+        stops: [[0, "ff0000"], [1, "0000ff"]],
+        apply_transformations: true,
+      )
+    end
+  end
+
+  describe "user space on use with radial gradient" do
+    let(:svg) do
+      <<-SVG
+        <radialGradient id="flag" gradientUnits="userSpaceOnUse" fx="100" fy="500" cx="200" cy="600" r="150">
+          <stop offset="0" stop-color="red"/>
+          <stop offset="1" stop-color="blue"/>
+        </radialGradient>
+      SVG
+    end
+
+    it "returns correct gradient arguments for an element" do
+      arguments = element.gradient_arguments(double)
+      expect(arguments).to eq(
+        from: [100.0, 100.0],
+        to:   [200.0, 0.0],
+        r1:   0,
+        r2:   150,
         stops: [[0, "ff0000"], [1, "0000ff"]],
         apply_transformations: true,
       )
     end
   end