Add tests for the post model

Gemfile

@@ -13,3 +13,5 @@ gem "faraday"
 gem "github_api"
 
 gem "indieweb-endpoints"
+
+gem "minitest"

Gemfile.lock

@@ -44,6 +44,7 @@ GEM
     link-header-parser (0.2.0)
       absolutely (~> 3.0)
     mini_portile2 (2.4.0)
+    minitest (5.13.0)
     multi_json (1.14.1)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
@@ -90,6 +91,7 @@ DEPENDENCIES
   faraday
   github_api
   indieweb-endpoints
+  minitest
   puma
   sinatra
   sinatra-contrib

lib/micropub/models/post.rb

@@ -1,14 +1,12 @@
+require "date"
+
 class Post
   attr_accessor :params
 
-  def initialize(params)
+  def initialize(params = {})
     @params = params
   end
 
-  def path
-    "/blog/#{published.strftime("%Y/%m/%d")}/#{id}"
-  end
-
   def id
     title.
       downcase.
@@ -21,6 +19,10 @@ class Post
     params["title"] || truncated_content
   end
 
+  def path
+    "/blog/#{published.strftime("%Y/%m/%d")}/#{id}"
+  end
+
   def truncated_content
     content[0..content.index(".")].
       split(" ").

test/lib/micropub/models/post_test.rb

@@ -0,0 +1,156 @@
+require "minitest/autorun"
+require_relative "../../../../lib/micropub/models/post"
+
+describe Post do
+  describe "#id" do
+    it "parameterizes the title" do
+      post = Post.new("title" => "My amazing post")
+
+      _(post.id).must_equal "my-amazing-post"
+    end
+
+    it "parameterizes the post content if there's no title" do
+      post = Post.new("content" => "Hello, World!")
+
+      _(post.id).must_equal "hello-world"
+    end
+
+    it "parameterizes the truncated post content" do
+      post = Post.new(
+        "content" => <<~CONTENT
+          Your bones don't break, mine do. That's clear. Your cells react to
+          bacteria and viruses differently than mine. You don't get sick, I do.
+          That's also clear. But for some reason, you and I react the exact
+          same way to water. We swallow it too fast, we choke. We get some in
+          our lungs, we drown. However unreal it may seem, we are connected,
+          you and I. We're on the same curve, just on opposite ends.
+        CONTENT
+      )
+
+      _(post.id).must_equal "your-bones-don-t-break-mine-do"
+    end
+  end
+
+  describe "#title" do
+    it "returns the title" do
+      post = Post.new("title" => "My great post")
+
+      _(post.title).must_equal "My great post"
+    end
+
+    it "returns the content if there's no title" do
+      post = Post.new("content" => "My money's in that office, right?")
+
+      _(post.title).must_equal "My money's in that office, right?"
+    end
+  end
+
+  describe "#path" do
+    it "returns the new path of the post" do
+      post = Post.new(
+        "published" => "2019/02/09",
+        "content" => "My great post.",
+      )
+
+      _(post.path).must_equal "/blog/2019/02/09/my-great-post"
+    end
+  end
+
+  describe "#truncated_content" do
+    it "returns the content if it's six words or less" do
+      post = Post.new("content" => "My money's in that office, right?")
+
+      _(post.truncated_content).must_equal "My money's in that office, right?"
+    end
+
+    it "truncates the content to six words" do
+      post = Post.new(
+        "content" => <<~CONTENT
+          Your bones don't break, mine do. That's clear. Your cells react to
+          bacteria and viruses differently than mine. You don't get sick, I do.
+          That's also clear. But for some reason, you and I react the exact
+          same way to water. We swallow it too fast, we choke. We get some in
+          our lungs, we drown. However unreal it may seem, we are connected,
+          you and I. We're on the same curve, just on opposite ends.
+        CONTENT
+      )
+
+      _(post.truncated_content).must_equal "Your bones don't break, mine do."
+    end
+
+    it "adds an ellipsis if the content is truncated in a sentence" do
+      post = Post.new(
+        "content" => "The path of the righteous man is beset on all sides by "\
+                     "the iniquities of the selfish and the tyranny of evil "\
+                     "men.",
+      )
+
+      _(post.truncated_content).must_equal "The path of the righteous man…"
+    end
+  end
+
+  describe "#published" do
+    it "returns the parsed date" do
+      post = Post.new("published" => "2019-11-01")
+
+      _(post.published).must_equal DateTime.new(2019, 11, 1)
+    end
+
+    it "returns todays date if no date is passed" do
+      post = Post.new
+
+      _(post.published.to_s).must_equal DateTime.now.to_s
+    end
+  end
+
+  describe "#categories" do
+    it "returns the list of categories" do
+      post = Post.new("category" => ["shows", "pilot"])
+
+      _(post.categories).must_equal ["shows", "pilot"]
+    end
+
+    it "returns an empty array if there are no categories" do
+      post = Post.new
+
+      _(post.categories).must_equal []
+    end
+
+    it "returns an array with a single category" do
+      post = Post.new("category" => "fried-chicken")
+
+      _(post.categories).must_equal ["fried-chicken"]
+    end
+  end
+
+  describe "#content" do
+    it "returns the content" do
+      post = Post.new("content" => "Hello, World!")
+
+      _(post.content).must_equal "Hello, World!"
+    end
+  end
+
+  describe "#post_content" do
+    it "returns a post formatted for hugo" do
+      post = Post.new(
+        "content" => "Hallo, Earth!",
+        "published" => "2019-11-12",
+        "category" => ["one", "two", "three"],
+      )
+
+      _(post.post_content).must_equal <<~POST
+        ---
+        date: '2019-11-12T00:00:00+00:00'
+        layout: micropost
+        categories:
+        - one
+        - two
+        - three
+        ---
+
+        Hallo, Earth!
+      POST
+    end
+  end
+end