implement Color#opacity=

1 files changed, 82 insertions, 0 deletions

diff --git a/test/triangle_spec.rb b/test/triangle_spec.rb
new file mode 100644
index 0000000..f71b097
--- /dev/null
+++ b/test/triangle_spec.rb
@@ -0,0 +1,82 @@
+require 'ruby2d'
+
+RSpec.describe Ruby2D::Triangle do
+  describe '#new' do
+    it "creates a triangle with white color by default" do
+      triangle = Triangle.new(
+        320,  50,
+        540, 430,
+        100, 430
+      )
+      expect(triangle.color).to   be_a(Ruby2D::Color)
+      expect(triangle.color.r).to eq(1)
+      expect(triangle.color.g).to eq(1)
+      expect(triangle.color.b).to eq(1)
+      expect(triangle.color.a).to eq(1)
+    end
+
+    it 'creates a new triangle with one color via string' do
+      triangle = Triangle.new(
+        320,  50,
+        540, 430,
+        100, 430,
+        "black"
+      )
+
+      expect(triangle.color).to be_a(Ruby2D::Color)
+    end
+
+    it "creates a new triangle with one color via array of numbers" do
+      triangle = Triangle.new(
+        320,  50,
+        540, 430,
+        100, 430,
+        [0.1, 0.3, 0.5, 0.7]
+      )
+
+      expect(triangle.color).to be_a(Ruby2D::Color)
+    end
+
+    it "creates a new triangle with 3 colors via array of 3 strings" do
+      triangle = Triangle.new(
+        320,  50,
+        540, 430,
+        100, 430,
+        ["red", "green", "blue"]
+      )
+      expect(triangle.color).to be_a(Ruby2D::Color::Set)
+    end
+
+    it "creates a new triangle with 3 colors via array of 3 arrays of arrays of numbers" do
+      triangle = Triangle.new(
+        320,  50,
+        540, 430,
+        100, 430,
+        [[0.1, 0.3, 0.5, 0.7], [0.2, 0.4, 0.6, 0.8], [0.3, 0.5, 0.7, 0.9]]
+      )
+      expect(triangle.color).to be_a(Ruby2D::Color::Set)
+    end
+
+    it "throws an error when array of 2 strings is passed" do
+      expect do
+        Triangle.new(
+          320,  50,
+          540, 430,
+          100, 430,
+          ["red", "green"]
+        )
+      end.to raise_error("Triangles require 3 colors, one for each vertex. 2 were given.")
+    end
+
+    it "throws an error when array of 4 strings is passed" do
+      expect do
+        Triangle.new(
+          320,  50,
+          540, 430,
+          100, 430,
+          ["red", "green", "blue", "fuchsia"]
+        )
+      end.to raise_error("Triangles require 3 colors, one for each vertex. 4 were given.")
+    end
+  end
+end