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require 'ruby2d'
RSpec.describe Ruby2D::Triangle do
describe '#new' do
it "creates a triangle with white color by default" do
triangle = Triangle.new
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(color: "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(color: [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(color: ["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(
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]
]
)
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(color: ["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(color: ["red", "green", "blue", "fuchsia"])
end.to raise_error("Triangles require 3 colors, one for each vertex. 4 were given.")
end
end
describe '#contains?' do
it "returns true if point is inside triangle" do
triangle = Triangle.new(
x1: 0, y1: 0,
x2: 0, y2: 100,
x3: 100, y3: 0
)
expect(triangle.contains?(25, 25)).to be true
end
it "returns true if point is inside text" do
triangle = Triangle.new(
x1: 0, y1: 0,
x2: 0, y2: 100,
x3: 100, y3: 0
)
expect(triangle.contains?( 25, -25)).to be false
expect(triangle.contains?(-25, 25)).to be false
expect(triangle.contains?(100, 100)).to be false
end
end
end
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