feat: initial release of volumen — a file-based Markdown blog engine

test/frontmatter_test.rb

@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class FrontmatterTest < Minitest::Test
+  def test_parse_extracts_metadata_and_body
+    content = <<~POST
+      +++
+      title = "Hello"
+      tags = ["a", "b"]
+      +++
+
+      Body text.
+    POST
+    metadata, body = Volumen::Frontmatter.parse(content)
+    assert_equal "Hello", metadata["title"]
+    assert_equal %w[a b], metadata["tags"]
+    assert_equal "Body text.\n", body
+  end
+
+  def test_parse_without_frontmatter
+    metadata, body = Volumen::Frontmatter.parse("# Just markdown\n")
+    assert_empty metadata
+    assert_equal "# Just markdown\n", body
+  end
+
+  def test_parse_without_closing_delimiter
+    content = "+++\ntitle = \"x\"\n\nbody"
+    metadata, body = Volumen::Frontmatter.parse(content)
+    assert_empty metadata
+    assert_equal content, body
+  end
+
+  def test_round_trip
+    metadata = { "title" => "Hello", "tags" => ["intro"], "draft" => false }
+    dumped = Volumen::Frontmatter.dump(metadata, "Hello **world**.")
+    parsed_meta, parsed_body = Volumen::Frontmatter.parse(dumped)
+    assert_equal metadata, parsed_meta
+    assert_equal "Hello **world**.", parsed_body.strip
+  end
+
+  def test_parse_normalises_crlf
+    metadata, body = Volumen::Frontmatter.parse("+++\r\ntitle = \"x\"\r\n+++\r\n\r\nBody\r\n")
+    assert_equal "x", metadata["title"]
+    assert_equal "Body\n", body
+  end
+end