WIP: Adding tests for Phlex::HtmlRenderable

fixtures/view_helper.rb

@@ -14,6 +14,16 @@ def view(&block)
 		end
 	end
 
+	def html_renderable_view(...)
+		let :view do
+			Class.new(Phlex::HTML) do
+				include Phlex::HtmlRenderable
+
+				class_eval(...)
+			end
+		end
+	end
+
 	def svg_view(&block)
 		let :view do
 			Class.new(Phlex::SVG, &block)

test/phlex/html_renderable/plain.rb

@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+describe Phlex::HTML do
+	extend ViewHelper
+
+	with "text" do
+		html_renderable_view do
+			def template
+				plain "Hi"
+			end
+		end
+
+		it "produces the correct output" do
+			expect(output).to be == "Hi"
+		end
+	end
+
+	with "int as text" do
+		view do
+			def template
+				plain 1
+			end
+		end
+
+		it "produces the correct output" do
+			expect(output).to be == "1"
+		end
+	end
+
+	with "float as text" do
+		view do
+			def template
+				plain 2.0
+			end
+		end
+
+		it "produces the correct output" do
+			expect(output).to be == "2.0"
+		end
+	end
+
+	with "an object that has no special format_object handling" do
+		view do
+			def template
+				plain Object.new
+			end
+		end
+
+		it "raises an ArgumentError" do
+			expect { output }.to raise_exception(ArgumentError)
+		end
+	end
+end