1 files changed, 92 insertions, 0 deletions
diff --git a/test/line_spec.rb b/test/line_spec.rb
index 2129073..5fd6ae8 100644
--- a/test/line_spec.rb
+++ b/test/line_spec.rb
@@ -2,6 +2,98 @@ require 'ruby2d'
 
 RSpec.describe Ruby2D::Line do
 
+  describe "#new" do
+    it "creates a white line by default" do
+      line = Line.new
+      expect(line.color).to be_a(Ruby2D::Color)
+      expect(line.color.r).to eq(1)
+      expect(line.color.g).to eq(1)
+      expect(line.color.b).to eq(1)
+      expect(line.color.a).to eq(1)
+    end
+
+    it "creates a line with options" do
+      line = Line.new(
+        x1: 10, y1: 20, x2: 30, y2: 40, z: 50, width: 60,
+        color: 'gray', opacity: 0.5
+      )
+
+      expect(line.x1).to eq(10)
+      expect(line.y1).to eq(20)
+      expect(line.x2).to eq(30)
+      expect(line.y2).to eq(40)
+      expect(line.z).to eq(50)
+      expect(line.width).to eq(60)
+      expect(line.length).to be_within(0.0001).of(28.2843)
+      expect(line.color.r).to eq(2/3.0)
+      expect(line.opacity).to eq(0.5)
+    end
+
+    it "creates a new line with one color via string" do
+      line = Line.new(color: 'red')
+      expect(line.color).to be_a(Ruby2D::Color)
+    end
+
+    it "creates a new line with one color via array of numbers" do
+      line = Quad.new(color: [0.1, 0.3, 0.5, 0.7])
+      expect(line.color).to be_a(Ruby2D::Color)
+    end
+
+    it "creates a new line with 4 colors via array of 4 strings" do
+      line = Line.new(color: ['red', 'green', 'blue', 'black'])
+      expect(line.color).to be_a(Ruby2D::Color::Set)
+    end
+
+    it "creates a new line with 4 colors via array of 4 arrays of arrays of numbers" do
+      line = Line.new(
+        color: [
+          [0.1, 0.3, 0.5, 0.7],
+          [0.2, 0.4, 0.6, 0.8],
+          [0.3, 0.5, 0.7, 0.9],
+          [0.4, 0.6, 0.8, 1.0]
+        ]
+      )
+      expect(line.color).to be_a(Ruby2D::Color::Set)
+    end
+
+    it "throws an error when array of 3 strings is passed" do
+      expect do
+        Line.new(color: ['red', 'green', 'blue'])
+      end.to raise_error("`Ruby2D::Line` requires 4 colors, one for each vertex. 3 were given.")
+    end
+
+    it "throws an error when array of 5 strings is passed" do
+      expect do
+        Line.new(color: ['red', 'green', 'blue', 'black', 'fuchsia'])
+      end.to raise_error("`Ruby2D::Line` requires 4 colors, one for each vertex. 5 were given.")
+    end
+  end
+
+  describe "attributes" do
+    it "can be set and read" do
+      line = Line.new
+      line.x1 = 10
+      line.y1 = 20
+      line.x2 = 30
+      line.y2 = 40
+      line.z = 50
+      line.width = 60
+      line.color = 'gray'
+      line.opacity = 0.5
+
+      expect(line.x1).to eq(10)
+      expect(line.y1).to eq(20)
+      expect(line.x2).to eq(30)
+      expect(line.y2).to eq(40)
+      expect(line.z).to eq(50)
+      expect(line.width).to eq(60)
+      expect(line.length).to be_within(0.0001).of(28.2843)
+      expect(line.color.r).to eq(2/3.0)
+      expect(line.opacity).to eq(0.5)
+    end
+  end
+
+  # TODO: This test should be more precise, like `Renderable#contains?`
   describe "#contains?" do
     line = Line.new(x1: 0, y1: 0, x2: 100, y2: 100)