Add CLI::initize tests

1 files changed, 41 insertions, 0 deletions

diff --git a/spec/cli_spec.rb b/spec/cli_spec.rb
new file mode 100644
index 0000000..4799ff0
--- /dev/null
+++ b/spec/cli_spec.rb
@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+require_relative '../lib/cli'
+
+RSpec.describe CLI do
+  let(:valid_file_path) { 'test_actions.txt' }
+  let(:invalid_file_path) { 'non_existent_file.txt' }
+
+  before do
+    File.write(valid_file_path, 'some actions')
+  end
+
+  after do
+    File.delete(valid_file_path) if File.exist?(valid_file_path)
+  end
+
+  describe '#initialize' do
+    context 'when no arguments are provided' do
+      it 'prints usage message and exits' do
+        expect do
+          CLI.new([])
+        end.to output(%r{Usage: family_tree <path/to/actions.txt>}).to_stdout.and raise_error(SystemExit)
+      end
+    end
+
+    context 'when an invalid file path is provided' do
+      it 'prints error message and exits' do
+        expect do
+          CLI.new([invalid_file_path])
+        end.to output(/Error: The file 'non_existent_file.txt' does not exist./).to_stdout.and raise_error(SystemExit)
+      end
+    end
+
+    context 'when a valid file path is provided' do
+      it 'initializes successfully' do
+        cli = CLI.new([valid_file_path])
+        expect(cli).to be_an_instance_of(CLI)
+      end
+    end
+  end
+end