Add the GameOfLife module API for generating universes and running them

1 files changed, 70 insertions, 2 deletions

diff --git a/CLI/ruby/spec/game_of_life_spec.rb b/CLI/ruby/spec/game_of_life_spec.rb
index 5c93709..b4c1710 100644
--- a/CLI/ruby/spec/game_of_life_spec.rb
+++ b/CLI/ruby/spec/game_of_life_spec.rb
@@ -1,7 +1,75 @@
 # frozen_string_literal: true
 
 RSpec.describe GameOfLife do
-  it "has a version number" do
-    expect(GameOfLife::VERSION).not_to be nil
+  describe ".generate" do
+    let(:options) do
+      {
+        "live-cell" => "L",
+        "dead-cell" => "D",
+        "delay" => 100,
+        "width" => 10,
+        "height" => 20,
+        "seed" => 500,
+      }
+    end
+
+    context "with options['input']" do
+      before { options["input"] = "./file.txt" }
+
+      it "defines configurations constants" do
+        expect(described_class::Cell).to receive(:const_set).with(:LIVE_CELL, "L")
+        expect(described_class::Cell).to receive(:const_set).with(:DEAD_CELL, "D")
+        expect(described_class).to receive(:const_set).with(:DELAY, 100.0)
+        expect(described_class).to receive(:const_set).with(:BANNER, "Input: ./file.txt")
+
+        allow(described_class::Generators::Input).to receive(:new)
+        described_class.generate(options)
+      end
+
+      it "calls Generators::Input.new" do
+        allow(described_class::Cell).to receive(:const_set)
+        allow(described_class).to receive(:const_set)
+
+        expect(described_class::Generators::Input).to receive(:new).with(options)
+        described_class.generate(options)
+      end
+    end
+
+    context "without options['input']" do
+      before { options["seed"] = 1337 }
+
+      it "defines configurations constants" do
+        expect(described_class::Cell).to receive(:const_set).with(:LIVE_CELL, "L")
+        expect(described_class::Cell).to receive(:const_set).with(:DEAD_CELL, "D")
+        expect(described_class).to receive(:const_set).with(:DELAY, 100.0)
+        expect(described_class).to receive(:const_set).with(:BANNER, "Seed: 1337")
+
+        allow(described_class::Generators::Seed).to receive(:new)
+        described_class.generate(options)
+      end
+
+      it "calls Generators::Seed.new (and raises error)" do
+        allow(described_class::Cell).to receive(:const_set)
+        allow(described_class).to receive(:const_set)
+
+        expect { described_class.generate(options) }.to raise_error(NotImplementedError)
+      end
+    end
+  end
+
+  describe ".run" do
+    let(:universe) { GameOfLife::Universe.new(width: 3, height: 3) }
+
+    it "calls universe#evolve! and #{described_class}.run" do
+      # allow kernel loop tiwce
+      allow(Kernel).to receive(:loop).and_yield.and_yield
+
+      expect(described_class).to receive(:render).with(universe).twice
+      expect(universe).to receive(:evolve!).twice
+
+      described_class.run(universe)
+    end
   end
+
+  describe.pending ".render"
 end