volumen/test/post_test.rb

# frozen_string_literal: true

require "test_helper"

class PostTest < Minitest::Test
  def test_parse_builds_post
    content = <<~POST
      +++
      title = "Hello"
      slug = "hello"
      lang = "en"
      tags = ["intro", "ruby"]
      date = 2026-01-15
      draft = true
      +++

      First paragraph.
    POST
    post = Volumen::Post.parse(content)
    assert_equal "hello", post.slug
    assert_equal "Hello", post.title
    assert_equal "en", post.lang
    assert_equal %w[intro ruby], post.tags
    assert_predicate post, :draft?
    assert_equal "2026-01-15", post.date_string
  end

  def test_excerpt_derived_from_body
    post = Volumen::Post.new(metadata: { "slug" => "x" }, body: "# Heading\n\nThe body paragraph.")
    assert_equal "The body paragraph.", post.excerpt
  end

  def test_derived_excerpt_strips_html_tags
    body = "<strong>Bold</strong> and <em>italic</em>."
    post = Volumen::Post.new(metadata: { "slug" => "x" }, body: body)
    assert_equal "Bold and italic.", post.excerpt
  end

  def test_summary_shape
    post = Volumen::Post.new(metadata: { "slug" => "x", "title" => "X" }, body: "Body")
    summary = post.summary
    assert_equal "/api/volumen/posts/x", summary["url"]
    assert_equal "X", summary["title"]
    refute_predicate post, :draft?
  end

  def test_detail_includes_rendered_html
    post = Volumen::Post.new(metadata: { "slug" => "x" }, body: "**hi**")
    assert_includes post.detail["html"], "<strong>hi</strong>"
  end

  def test_summary_includes_cover_and_reading_time
    post = Volumen::Post.new(
      metadata: { "slug" => "x", "cover" => "/media/c.png" },
      body: ("word " * 250)
    )
    assert_equal "/media/c.png", post.summary["cover"]
    assert_equal 2, post.summary["reading_time"]
  end

  def test_reading_time_is_at_least_one
    post = Volumen::Post.new(metadata: { "slug" => "x" }, body: "short")
    assert_equal 1, post.reading_time
  end

  def test_scheduled_post_is_not_scheduled_when_publish_at_is_past
    post = Volumen::Post.new(metadata: { "publish_at" => Date.today - 1 })
    refute_predicate post, :scheduled?
  end

  def test_scheduled_post_is_scheduled_when_publish_at_is_future
    post = Volumen::Post.new(metadata: { "publish_at" => Date.today + 7 })
    assert_predicate post, :scheduled?
  end

  def test_post_without_publish_at_is_not_scheduled
    post = Volumen::Post.new(metadata: {})
    refute_predicate post, :scheduled?
  end

  def test_fediverse_creator_returns_metadata_value
    post = Volumen::Post.new(
      metadata: { "slug" => "x", "fediverse_creator" => "@user@example.social" }
    )
    assert_equal "@user@example.social", post.fediverse_creator
  end

  def test_fediverse_creator_is_nil_when_missing
    post = Volumen::Post.new(metadata: { "slug" => "x" })
    assert_nil post.fediverse_creator
  end

  def test_fediverse_creator_is_nil_when_blank
    post = Volumen::Post.new(metadata: { "slug" => "x", "fediverse_creator" => "   " })
    assert_nil post.fediverse_creator
  end

  def test_fediverse_creator_validation_accepts_well_formed_handles
    post = Volumen::Post.new(
      metadata: { "slug" => "x", "fediverse_creator" => "@ada@lovelace.org" }
    )
    assert_predicate post, :valid_fediverse_creator?
  end

  def test_fediverse_creator_validation_rejects_malformed_handles
    [
      "ada@example.com",
      "@only-one-at",
      "@user@example.com extra",
      "@user@",
      "@@example.com"
    ].each do |value|
      post = Volumen::Post.new(metadata: { "slug" => "x", "fediverse_creator" => value })
      refute_predicate post, :valid_fediverse_creator?, "expected #{value.inspect} to be invalid"
    end
  end

  def test_fediverse_creator_validation_accepts_padded_value
    post = Volumen::Post.new(
      metadata: { "slug" => "x", "fediverse_creator" => "  @user@example.com  " }
    )
    assert_predicate post, :valid_fediverse_creator?
  end

  def test_summary_includes_fediverse_creator
    post = Volumen::Post.new(
      metadata: { "slug" => "x", "fediverse_creator" => "@user@example.social" },
      body: "body"
    )
    assert_equal "@user@example.social", post.summary["fediverse_creator"]
  end

  def test_summary_omits_fediverse_creator_when_absent
    post = Volumen::Post.new(metadata: { "slug" => "x" }, body: "body")
    assert_nil post.summary["fediverse_creator"]
  end
end