Initial MoonModel implementation

test/wizard_test.rb

@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+
+require "test_helper"
+require "stringio"
+
+class WizardTest < Minitest::Test
+  def test_blank_input_accepts_false_default
+    answer, output = ask_yes_no("\n", false)
+
+    refute answer
+    assert_includes output, "|no|"
+    refute_includes output, 'Please enter "yes" or "no".'
+  end
+
+  def test_blank_input_accepts_true_default
+    answer, output = ask_yes_no("\n", true)
+
+    assert answer
+    assert_includes output, "|yes|"
+    refute_includes output, 'Please enter "yes" or "no".'
+  end
+
+  def test_explicit_answers_override_defaults
+    { "yes\n" => true, "y\n" => true, "no\n" => false, "n\n" => false }.each do |input, expected|
+      answer, = ask_yes_no(input, !expected)
+      assert_equal expected, answer, "expected #{input.inspect} to override the default"
+    end
+  end
+
+  def test_selects_a_new_named_model
+    Dir.mktmpdir do |dir|
+      output = StringIO.new
+      wizard = MoonModel::Wizard.new(io: HighLine.new(StringIO.new("My Moon\n"), output), output_root: dir)
+
+      values = wizard.send(:select_model)
+
+      assert_equal "My Moon", values.dig("output", "name")
+      refute Dir.exist?(File.join(dir, "My_Moon"))
+    end
+  end
+
+  def test_existing_model_can_seed_revision_defaults
+    Dir.mktmpdir do |dir|
+      model = File.join(dir, "Saved_Moon")
+      Dir.mkdir(model)
+      config = MoonModel::Config.new("vertical_exaggeration" => 5, "output" => { "name" => "Saved Moon" })
+      config.save(File.join(model, "config.yml"))
+      File.write(File.join(model, "manifest.md"), "Generated by MoonModel test")
+      output = StringIO.new
+      wizard = MoonModel::Wizard.new(io: HighLine.new(StringIO.new("Saved Moon\n\n"), output), output_root: dir)
+
+      values = wizard.send(:select_model)
+
+      assert_equal 5, values["vertical_exaggeration"]
+      assert_equal "Saved Moon", values.dig("output", "name")
+      assert_includes output.string, "Revise the existing Saved Moon model?"
+    end
+  end
+
+  def test_warns_when_user_chooses_less_than_recommended_stand_clearance
+    output = StringIO.new
+    highline = HighLine.new(StringIO.new("\n\n5\n"), output)
+    wizard = MoonModel::Wizard.new(io: highline)
+    values = { "purpose" => "display", "assembly" => "auto" }
+
+    wizard.send(:purpose, values)
+
+    assert_equal 5.0, values.dig("stand", "base_clearance_mm")
+    assert_includes output.string, "waive the recommended terrain safety margin"
+  end
+
+  private
+
+  def ask_yes_no(input, default)
+    output = StringIO.new
+    highline = HighLine.new(StringIO.new(input), output)
+    wizard = MoonModel::Wizard.new(io: highline)
+    [wizard.send(:yes_no, "Continue?", default), output.string]
+  end
+end