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Extract tile and subtitle from initial paragraphs

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Medium guides each post to have a Title and Subtitle. They are rendered
as the first two paragraphs: H3 and H4 respectively. If they exist, a
new PageConverter class extracts them and sets them on the page.

However, they aren't required. If the first two paragraphs aren't H3
and H4, the PageConverter falls back to using the first paragraph as
the title, and setting the subtitle to blank.

The remaining paragraphs are passed into the ParagraphConverter as
normal.
This commit is contained in:
Edward Loveall 2021-08-14 17:36:10 -04:00
commit 05c18f6451
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5 changed files with 288 additions and 99 deletions

97
spec/classes/page_converter_spec.cr Normal file
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require "../spec_helper"
include Nodes
describe PageConverter do
it "sets the title and subtitle if present" do
paragraphs = Array(PostResponse::Paragraph).from_json <<-JSON
[
{
"text": "Title",
"type": "H3",
"markups": [],
"href": null,
"iframe": null,
"layout": null,
"metadata": null
},
{
"text": "Subtitle",
"type": "H4",
"markups": [],
"href": null,
"iframe": null,
"layout": null,
"metadata": null
}
]
JSON
page = PageConverter.new.convert(paragraphs)
page.title.should eq "Title"
page.subtitle.should eq "Subtitle"
end
it "sets the title to the first paragraph if no title" do
paragraphs = Array(PostResponse::Paragraph).from_json <<-JSON
[
{
"text": "Not a title",
"type": "P",
"markups": [],
"href": null,
"iframe": null,
"layout": null,
"metadata": null
}
]
JSON
page = PageConverter.new.convert(paragraphs)
page.title.should eq "Not a title"
page.subtitle.should eq nil
end
it "calls ParagraphConverter to convert the remaining paragraph content" do
paragraphs = Array(PostResponse::Paragraph).from_json <<-JSON
[
{
"text": "Title",
"type": "H3",
"markups": [],
"href": null,
"iframe": null,
"layout": null,
"metadata": null
},
{
"text": "Subtitle",
"type": "H4",
"markups": [],
"href": null,
"iframe": null,
"layout": null,
"metadata": null
},
{
"text": "Content",
"type": "P",
"markups": [],
"href": null,
"iframe": null,
"layout": null,
"metadata": null
}
]
JSON
page = PageConverter.new.convert(paragraphs)
page.nodes.should eq [
Paragraph.new([
Text.new("Content"),
] of Child),
]
end
end