From 501eeba38abe984959205c9c17a99a27864e29cd Mon Sep 17 00:00:00 2001
From: a14m <a14m@pm.me>
Date: Mon, 14 Dec 2020 13:00:30 +0100
Subject: Add the specs for the parsed_options method (fixing negative issues)

---
 CLI/ruby/spec/game_of_life_spec.rb | 62 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

(limited to 'CLI/ruby')

diff --git a/CLI/ruby/spec/game_of_life_spec.rb b/CLI/ruby/spec/game_of_life_spec.rb
index 6564327..00b58b8 100644
--- a/CLI/ruby/spec/game_of_life_spec.rb
+++ b/CLI/ruby/spec/game_of_life_spec.rb
@@ -1,6 +1,68 @@
 # frozen_string_literal: true
 
 RSpec.describe GameOfLife do
+  describe ".parsed_options" do
+    context "options['delay']" do
+      it "raises GameOfLife::Error when negative delay" do
+        options = { "delay" => -13 }
+        expect { described_class.parsed_options(options) }.to raise_error(GameOfLife::Error, /Invalid --delay value/)
+      end
+
+      it "uses options['delay'] when provided" do
+        options = { "delay" => 15 }
+        expect(described_class.parsed_options(options)).to include("delay" => 15)
+      end
+    end
+
+    context "options['width']" do
+      it "raises GameOfLife::Error when width < 1" do
+        options = { "width" => 0 }
+        expect { described_class.parsed_options(options) }.to raise_error(GameOfLife::Error, /Invalid --width value/)
+      end
+
+      it "raises GameOfLife::Error when width > IO.console.winsize[1]" do
+        options = { "width" => 23 }
+        allow(IO).to receive_message_chain(:console, :winsize).and_return([10, 20])
+        expect { described_class.parsed_options(options) }.to raise_error(GameOfLife::Error, /Invalid --width value/)
+      end
+
+      it "uses options['width'] when provided" do
+        options = { "width" => 15 }
+        allow(IO).to receive_message_chain(:console, :winsize).and_return([10, 20])
+        expect(described_class.parsed_options(options)).to include("width" => 15)
+      end
+
+      it "uses IO.console.winsize[1] as default" do
+        allow(IO).to receive_message_chain(:console, :winsize).and_return([10, 20])
+        expect(described_class.parsed_options({})).to include("width" => 20)
+      end
+    end
+
+    context "options['height']" do
+      it "raises GameOfLife::Error when height < 1" do
+        options = { "height" => 0 }
+        expect { described_class.parsed_options(options) }.to raise_error(GameOfLife::Error, /Invalid --height value/)
+      end
+
+      it "raises GameOfLife::Error when height > winsize[0] - 2" do
+        options = { "height" => 9 }
+        allow(IO).to receive_message_chain(:console, :winsize).and_return([10, 20])
+        expect { described_class.parsed_options(options) }.to raise_error(GameOfLife::Error, /Invalid --height value/)
+      end
+
+      it "uses options['height'] when provided" do
+        options = { "height" => 5 }
+        allow(IO).to receive_message_chain(:console, :winsize).and_return([10, 20])
+        expect(described_class.parsed_options(options)).to include("height" => 5)
+      end
+
+      it "uses IO.console.winsize[0] - 2 as default" do
+        allow(IO).to receive_message_chain(:console, :winsize).and_return([10, 20])
+        expect(described_class.parsed_options({})).to include("height" => 8)
+      end
+    end
+  end
+
   describe ".generate" do
     let(:options) do
       {
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