Initial parametric Feather case generator

test/package_builder_test.rb

@@ -0,0 +1,106 @@
+# frozen_string_literal: true
+
+require_relative "test_helper"
+
+class PackageBuilderTest < Minitest::Test
+  def test_builds_self_contained_package_and_preserves_history
+    Dir.mktmpdir do |directory|
+      root = Pathname(directory)
+      tools = create_fake_tools(root)
+      model = root.join("model.scad")
+      renderer = root.join("renderer.py")
+      File.write(model, "cube([1,1,1]);\n")
+      File.write(renderer, "# test renderer\n")
+      config = FeatherCaseWizard::Config.create(name: "OLED Demo", slug: "oled-demo")
+      config.parameters["top_profile"] = "oled128x64"
+      config.outputs["formats"] = %w[3mf stl]
+      config.outputs["coupons"] = %w[fit_coupon]
+
+      destination = build(config, root.join("cases"), tools, model, renderer)
+
+      assert destination.join("case.yml").file?
+      assert destination.join("parameters.json").file?
+      assert destination.join("build.rb").executable?
+      %w[body lid buttons fit_coupon].each do |part|
+        assert destination.join("exports/stl/#{part}.stl").file?
+        assert destination.join("exports/3mf/#{part}.3mf").file?
+        assert destination.join("previews/#{part}_iso.png").file?
+      end
+      %w[iso front back left right top].each do |view|
+        assert destination.join("previews/assembly_#{view}.png").file?
+      end
+
+      config.parameters["button_reset"] = true
+      build(config, root.join("cases"), tools, model, renderer)
+      assert_equal 1, Dir.glob(destination.join("history/case-*.yml")).length
+    end
+  end
+
+  def test_failed_build_leaves_existing_package_untouched
+    Dir.mktmpdir do |directory|
+      root = Pathname(directory)
+      destination = root.join("cases/demo")
+      FileUtils.mkdir_p(destination)
+      File.write(destination.join("sentinel"), "keep")
+      model = root.join("model.scad")
+      renderer = root.join("renderer.py")
+      File.write(model, "cube(1);\n")
+      File.write(renderer, "# renderer\n")
+      failing = Class.new do
+        attr_reader :openscad, :blender
+        def initialize
+          @openscad = @blender = "/fake"
+        end
+        def check! = self
+        def run!(*)
+          raise FeatherCaseWizard::ToolError, "planned failure"
+        end
+      end.new
+      config = FeatherCaseWizard::Config.create(name: "Demo", slug: "demo")
+
+      assert_raises(FeatherCaseWizard::ToolError) do
+        FeatherCaseWizard::PackageBuilder.new(
+          config, root: root.join("cases"), toolchain: failing,
+          model_source: model, renderer_source: renderer
+        ).build!
+      end
+      assert_equal "keep", destination.join("sentinel").read
+    end
+  end
+
+  private
+
+  def build(config, root, tools, model, renderer)
+    FeatherCaseWizard::PackageBuilder.new(
+      config, root: root, toolchain: tools,
+      model_source: model, renderer_source: renderer
+    ).build!
+  end
+
+  def create_fake_tools(root)
+    bin = root.join("bin")
+    FileUtils.mkdir_p(bin)
+    openscad = bin.join("openscad")
+    blender = bin.join("blender")
+    File.write(openscad, <<~RUBY)
+      #!/usr/bin/env ruby
+      output = ARGV[ARGV.index("-o") + 1]
+      require "fileutils"
+      FileUtils.mkdir_p(File.dirname(output))
+      File.binwrite(output, "mesh")
+    RUBY
+    File.write(blender, <<~RUBY)
+      #!/usr/bin/env ruby
+      require "fileutils"
+      args = ARGV[(ARGV.index("--") + 1)..]
+      _mesh, output, basename, selected = args
+      views = selected ? selected.split(",") : %w[iso front back left right top]
+      FileUtils.mkdir_p(output)
+      views.each { |view| File.binwrite(File.join(output, "\#{basename}_\#{view}.png"), "png") }
+    RUBY
+    FileUtils.chmod(0o755, [openscad, blender])
+    FeatherCaseWizard::Toolchain.new(
+      env: {"PATH" => bin.to_s, "OPENSCAD" => openscad.to_s, "BLENDER" => blender.to_s}
+    )
+  end
+end