Add the specs for the input file generator

1 files changed, 49 insertions, 0 deletions

diff --git a/CLI/ruby/spec/game_of_life/generators/input_spec.rb b/CLI/ruby/spec/game_of_life/generators/input_spec.rb
new file mode 100644
index 0000000..cbf3958
--- /dev/null
+++ b/CLI/ruby/spec/game_of_life/generators/input_spec.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+RSpec.describe GameOfLife::Generators::Input do
+  describe ".new" do
+    let(:file) { instance_double(File) }
+
+    it "returns a GameOfLife::Universe" do
+      options = { "input" => "something", "width" => 1, "height" => 1 }
+      allow(URI).to receive(:open).and_return(file)
+      allow(file).to receive(:read).and_return(options["input"])
+
+      expect(described_class.new(options)).to be_a GameOfLife::Universe
+    end
+
+    it "parses alpha-numeric characters as living cells" do
+      options = { "input" => "Conway's Game of Life", "width" => 21, "height" => 1 }
+      allow(URI).to receive(:open).and_return(file)
+      allow(file).to receive(:read).and_return(options["input"])
+
+      #                                                Conway's Game of Life
+      expect(described_class.new(options).to_s).to eq "XXXXXX.X.XXXX.XX.XXXX"
+    end
+
+    it "fills the rest of universe with dead cells" do
+      options = { "input" => "Conway's Game of Life", "width" => 25, "height" => 2 }
+      allow(URI).to receive(:open).and_return(file)
+      allow(file).to receive(:read).and_return(options["input"])
+
+      #           Conway's Game of Life
+      universe = "XXXXXX.X.XXXX.XX.XXXX....\n" \
+                 "........................."
+
+      expect(described_class.new(options).to_s).to eq universe
+    end
+
+    it "truncates the content of the file to match the width" do
+      options = { "input" => "Conway's Game of Life", "width" => 11, "height" => 3 }
+      allow(URI).to receive(:open).and_return(file)
+      allow(file).to receive(:read).and_return(options["input"])
+
+      #           Conway's Ga
+      universe = "XXXXXX.X.XX\n" \
+                 "...........\n" \
+                 "..........."
+
+      expect(described_class.new(options).to_s).to eq universe
+    end
+  end
+end