zola/components/site/tests/site.rs

extern crate config;
extern crate site;
mod common;

use std::collections::HashMap;
use std::env;
use std::path::Path;

use common::{build_site, build_site_with_setup};
use config::Taxonomy;
use site::Site;

#[test]
fn can_parse_site() {
    let mut path = env::current_dir().unwrap().parent().unwrap().parent().unwrap().to_path_buf();
    path.push("test_site");
    let mut site = Site::new(&path, "config.toml").unwrap();
    site.load().unwrap();

    // Correct number of pages (sections do not count as pages)
    assert_eq!(site.library.pages().len(), 22);
    let posts_path = path.join("content").join("posts");

    // Make sure the page with a url doesn't have any sections
    let url_post = site.library.get_page(&posts_path.join("fixed-url.md")).unwrap();
    assert_eq!(url_post.path, "a-fixed-url/");

    // Make sure the article in a folder with only asset doesn't get counted as a section
    let asset_folder_post =
        site.library.get_page(&posts_path.join("with-assets").join("index.md")).unwrap();
    assert_eq!(asset_folder_post.file.components, vec!["posts".to_string()]);

    // That we have the right number of sections
    assert_eq!(site.library.sections().len(), 11);

    // And that the sections are correct
    let index_section = site.library.get_section(&path.join("content").join("_index.md")).unwrap();
    assert_eq!(index_section.subsections.len(), 4);
    assert_eq!(index_section.pages.len(), 1);
    assert!(index_section.ancestors.is_empty());

    let posts_section = site.library.get_section(&posts_path.join("_index.md")).unwrap();
    assert_eq!(posts_section.subsections.len(), 2);
    assert_eq!(posts_section.pages.len(), 10);
    assert_eq!(
        posts_section.ancestors,
        vec![*site.library.get_section_key(&index_section.file.path).unwrap()]
    );

    // Make sure we remove all the pwd + content from the sections
    let basic = site.library.get_page(&posts_path.join("simple.md")).unwrap();
    assert_eq!(basic.file.components, vec!["posts".to_string()]);
    assert_eq!(
        basic.ancestors,
        vec![
            *site.library.get_section_key(&index_section.file.path).unwrap(),
            *site.library.get_section_key(&posts_section.file.path).unwrap(),
        ]
    );

    let tutorials_section =
        site.library.get_section(&posts_path.join("tutorials").join("_index.md")).unwrap();
    assert_eq!(tutorials_section.subsections.len(), 2);
    let sub1 = site.library.get_section_by_key(tutorials_section.subsections[0]);
    let sub2 = site.library.get_section_by_key(tutorials_section.subsections[1]);
    assert_eq!(sub1.clone().meta.title.unwrap(), "Programming");
    assert_eq!(sub2.clone().meta.title.unwrap(), "DevOps");
    assert_eq!(tutorials_section.pages.len(), 0);

    let devops_section = site
        .library
        .get_section(&posts_path.join("tutorials").join("devops").join("_index.md"))
        .unwrap();
    assert_eq!(devops_section.subsections.len(), 0);
    assert_eq!(devops_section.pages.len(), 2);
    assert_eq!(
        devops_section.ancestors,
        vec![
            *site.library.get_section_key(&index_section.file.path).unwrap(),
            *site.library.get_section_key(&posts_section.file.path).unwrap(),
            *site.library.get_section_key(&tutorials_section.file.path).unwrap(),
        ]
    );

    let prog_section = site
        .library
        .get_section(&posts_path.join("tutorials").join("programming").join("_index.md"))
        .unwrap();
    assert_eq!(prog_section.subsections.len(), 0);
    assert_eq!(prog_section.pages.len(), 2);
}

#[test]
fn can_build_site_without_live_reload() {
    let (_, _tmp_dir, public) = build_site("test_site");

    assert!(&public.exists());
    assert!(file_exists!(public, "index.html"));
    assert!(file_exists!(public, "sitemap.xml"));
    assert!(file_exists!(public, "robots.txt"));
    assert!(file_exists!(public, "a-fixed-url/index.html"));

    assert!(file_exists!(public, "posts/python/index.html"));
    // Shortcodes work
    assert!(file_contains!(public, "posts/python/index.html", "Basic shortcode"));
    assert!(file_contains!(public, "posts/python/index.html", "Arrrh Bob"));
    assert!(file_contains!(public, "posts/python/index.html", "Arrrh Bob_Sponge"));
    assert!(file_exists!(public, "posts/tutorials/devops/nix/index.html"));
    assert!(file_exists!(public, "posts/with-assets/index.html"));
    assert!(file_exists!(public, "posts/no-section/simple/index.html"));

    // Sections
    assert!(file_exists!(public, "posts/index.html"));
    assert!(file_exists!(public, "posts/tutorials/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/index.html"));
    assert!(file_exists!(public, "posts/tutorials/programming/index.html"));
    // Ensure subsection pages are correctly filled
    assert!(file_contains!(public, "posts/tutorials/index.html", "Sub-pages: 2"));

    // Pages and section get their relative path
    assert!(file_contains!(public, "posts/tutorials/index.html", "posts/tutorials/_index.md"));
    assert!(file_contains!(
        public,
        "posts/tutorials/devops/nix/index.html",
        "posts/tutorials/devops/nix.md"
    ));

    // aliases work
    assert!(file_exists!(public, "an-old-url/old-page/index.html"));
    assert!(file_contains!(public, "an-old-url/old-page/index.html", "something-else"));

    // html aliases work
    assert!(file_exists!(public, "an-old-url/an-old-alias.html"));
    assert!(file_contains!(public, "an-old-url/an-old-alias.html", "something-else"));

    // redirect_to works
    assert!(file_exists!(public, "posts/tutorials/devops/index.html"));
    assert!(file_contains!(public, "posts/tutorials/devops/index.html", "docker"));

    // We do have categories
    assert_eq!(file_exists!(public, "categories/index.html"), true);
    assert_eq!(file_exists!(public, "categories/a-category/index.html"), true);
    assert_eq!(file_exists!(public, "categories/a-category/rss.xml"), true);
    // But no tags
    assert_eq!(file_exists!(public, "tags/index.html"), false);

    // Theme files are there
    assert!(file_exists!(public, "sample.css"));
    assert!(file_exists!(public, "some.js"));

    // SASS and SCSS files compile correctly
    assert!(file_exists!(public, "blog.css"));
    assert!(file_contains!(public, "blog.css", "red"));
    assert!(file_contains!(public, "blog.css", "blue"));
    assert!(!file_contains!(public, "blog.css", "@import \"included\""));
    assert!(file_contains!(public, "blog.css", "2rem")); // check include
    assert!(!file_exists!(public, "_included.css"));
    assert!(file_exists!(public, "scss.css"));
    assert!(file_exists!(public, "sass.css"));
    assert!(file_exists!(public, "nested_sass/sass.css"));
    assert!(file_exists!(public, "nested_sass/scss.css"));

    // no live reload code
    assert_eq!(file_contains!(public, "index.html", "/livereload.js?port=1112&mindelay=10"), false);

    // Both pages and sections are in the sitemap
    assert!(file_contains!(
        public,
        "sitemap.xml",
        "<loc>https://replace-this-with-your-url.com/posts/simple/</loc>"
    ));
    assert!(file_contains!(
        public,
        "sitemap.xml",
        "<loc>https://replace-this-with-your-url.com/posts/</loc>"
    ));
    // Drafts are not in the sitemap
    assert!(!file_contains!(public, "sitemap.xml", "draft"));

    // robots.txt has been rendered from the template
    assert!(file_contains!(public, "robots.txt", "User-agent: zola"));
    assert!(file_contains!(
        public,
        "robots.txt",
        "Sitemap: https://replace-this-with-your-url.com/sitemap.xml"
    ));
}

#[test]
fn can_build_site_with_live_reload() {
    let (_, _tmp_dir, public) = build_site_with_setup("test_site", |mut site| {
        site.enable_live_reload(1000);
        (site, true)
    });

    assert!(&public.exists());

    assert!(file_exists!(public, "index.html"));
    assert!(file_exists!(public, "sitemap.xml"));
    assert!(file_exists!(public, "robots.txt"));
    assert!(file_exists!(public, "a-fixed-url/index.html"));

    assert!(file_exists!(public, "posts/python/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/nix/index.html"));
    assert!(file_exists!(public, "posts/with-assets/index.html"));

    // Sections
    assert!(file_exists!(public, "posts/index.html"));
    assert!(file_exists!(public, "posts/tutorials/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/index.html"));
    assert!(file_exists!(public, "posts/tutorials/programming/index.html"));
    // TODO: add assertion for syntax highlighting

    // We do have categories
    assert_eq!(file_exists!(public, "categories/index.html"), true);
    assert_eq!(file_exists!(public, "categories/a-category/index.html"), true);
    assert_eq!(file_exists!(public, "categories/a-category/rss.xml"), true);
    // But no tags
    assert_eq!(file_exists!(public, "tags/index.html"), false);

    // no live reload code
    assert!(file_contains!(public, "index.html", "/livereload.js"));

    // the summary anchor link has been created
    assert!(file_contains!(
        public,
        "posts/python/index.html",
        r#"<a name="continue-reading"></a>"#
    ));
    assert!(file_contains!(public, "posts/draft/index.html", r#"THEME_SHORTCODE"#));
}

#[test]
fn can_build_site_with_taxonomies() {
    let (site, _tmp_dir, public) = build_site_with_setup("test_site", |mut site| {
        site.load().unwrap();
        for (i, (_, page)) in site.library.pages_mut().iter_mut().enumerate() {
            page.meta.taxonomies = {
                let mut taxonomies = HashMap::new();
                taxonomies.insert(
                    "categories".to_string(),
                    vec![if i % 2 == 0 { "A" } else { "B" }.to_string()],
                );
                taxonomies
            };
        }
        site.populate_taxonomies().unwrap();
        (site, false)
    });

    assert!(&public.exists());
    assert_eq!(site.taxonomies.len(), 1);

    assert!(file_exists!(public, "index.html"));
    assert!(file_exists!(public, "sitemap.xml"));
    assert!(file_exists!(public, "robots.txt"));
    assert!(file_exists!(public, "a-fixed-url/index.html"));

    assert!(file_exists!(public, "posts/python/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/nix/index.html"));
    assert!(file_exists!(public, "posts/with-assets/index.html"));

    // Sections
    assert!(file_exists!(public, "posts/index.html"));
    assert!(file_exists!(public, "posts/tutorials/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/index.html"));
    assert!(file_exists!(public, "posts/tutorials/programming/index.html"));

    // Categories are there
    assert!(file_exists!(public, "categories/index.html"));
    assert!(file_exists!(public, "categories/a/index.html"));
    assert!(file_exists!(public, "categories/b/index.html"));
    assert!(file_exists!(public, "categories/a/rss.xml"));
    assert!(file_contains!(
        public,
        "categories/a/rss.xml",
        "https://replace-this-with-your-url.com/categories/a/rss.xml"
    ));
    // Extending from a theme works
    assert!(file_contains!(public, "categories/a/index.html", "EXTENDED"));
    // Tags aren't
    assert_eq!(file_exists!(public, "tags/index.html"), false);

    // Categories are in the sitemap
    assert!(file_contains!(
        public,
        "sitemap.xml",
        "<loc>https://replace-this-with-your-url.com/categories/</loc>"
    ));
    assert!(file_contains!(
        public,
        "sitemap.xml",
        "<loc>https://replace-this-with-your-url.com/categories/a/</loc>"
    ));
}

#[test]
fn can_build_site_and_insert_anchor_links() {
    let (_, _tmp_dir, public) = build_site("test_site");

    assert!(Path::new(&public).exists());
    // anchor link inserted
    assert!(file_contains!(
        public,
        "posts/something-else/index.html",
        "<h1 id=\"title\"><a class=\"zola-anchor\" href=\"#title\""
    ));
}

#[test]
fn can_build_site_with_pagination_for_section() {
    let (_, _tmp_dir, public) = build_site_with_setup("test_site", |mut site| {
        site.load().unwrap();
        for (_, section) in site.library.sections_mut() {
            if section.is_index() {
                continue;
            }
            section.meta.paginate_by = Some(2);
            section.meta.template = Some("section_paginated.html".to_string());
        }
        (site, false)
    });

    assert!(&public.exists());

    assert!(file_exists!(public, "index.html"));
    assert!(file_exists!(public, "sitemap.xml"));
    assert!(file_exists!(public, "robots.txt"));
    assert!(file_exists!(public, "a-fixed-url/index.html"));
    assert!(file_exists!(public, "posts/python/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/nix/index.html"));
    assert!(file_exists!(public, "posts/with-assets/index.html"));

    // Sections
    assert!(file_exists!(public, "posts/index.html"));
    // And pagination!
    assert!(file_exists!(public, "posts/page/1/index.html"));
    // even if there is no pages, only the section!
    assert!(file_exists!(public, "paginated/page/1/index.html"));
    assert!(file_exists!(public, "paginated/index.html"));
    // should redirect to posts/
    assert!(file_contains!(
        public,
        "posts/page/1/index.html",
        "http-equiv=\"refresh\" content=\"0;url=https://replace-this-with-your-url.com/posts/\""
    ));
    assert!(file_contains!(public, "posts/index.html", "Num pagers: 5"));
    assert!(file_contains!(public, "posts/index.html", "Page size: 2"));
    assert!(file_contains!(public, "posts/index.html", "Current index: 1"));
    assert!(!file_contains!(public, "posts/index.html", "has_prev"));
    assert!(file_contains!(public, "posts/index.html", "has_next"));
    assert!(file_contains!(
        public,
        "posts/index.html",
        "First: https://replace-this-with-your-url.com/posts/"
    ));
    assert!(file_contains!(
        public,
        "posts/index.html",
        "Last: https://replace-this-with-your-url.com/posts/page/5/"
    ));
    assert_eq!(file_contains!(public, "posts/index.html", "has_prev"), false);

    assert!(file_exists!(public, "posts/page/2/index.html"));
    assert!(file_contains!(public, "posts/page/2/index.html", "Num pagers: 5"));
    assert!(file_contains!(public, "posts/page/2/index.html", "Page size: 2"));
    assert!(file_contains!(public, "posts/page/2/index.html", "Current index: 2"));
    assert!(file_contains!(public, "posts/page/2/index.html", "has_prev"));
    assert!(file_contains!(public, "posts/page/2/index.html", "has_next"));
    assert!(file_contains!(
        public,
        "posts/page/2/index.html",
        "First: https://replace-this-with-your-url.com/posts/"
    ));
    assert!(file_contains!(
        public,
        "posts/page/2/index.html",
        "Last: https://replace-this-with-your-url.com/posts/page/5/"
    ));

    assert!(file_exists!(public, "posts/page/3/index.html"));
    assert!(file_contains!(public, "posts/page/3/index.html", "Num pagers: 5"));
    assert!(file_contains!(public, "posts/page/3/index.html", "Page size: 2"));
    assert!(file_contains!(public, "posts/page/3/index.html", "Current index: 3"));
    assert!(file_contains!(public, "posts/page/3/index.html", "has_prev"));
    assert!(file_contains!(public, "posts/page/3/index.html", "has_next"));
    assert!(file_contains!(
        public,
        "posts/page/3/index.html",
        "First: https://replace-this-with-your-url.com/posts/"
    ));
    assert!(file_contains!(
        public,
        "posts/page/3/index.html",
        "Last: https://replace-this-with-your-url.com/posts/page/5/"
    ));

    assert!(file_exists!(public, "posts/page/4/index.html"));
    assert!(file_contains!(public, "posts/page/4/index.html", "Num pagers: 5"));
    assert!(file_contains!(public, "posts/page/4/index.html", "Page size: 2"));
    assert!(file_contains!(public, "posts/page/4/index.html", "Current index: 4"));
    assert!(file_contains!(public, "posts/page/4/index.html", "has_prev"));
    assert!(file_contains!(public, "posts/page/4/index.html", "has_next"));
    assert!(file_contains!(
        public,
        "posts/page/4/index.html",
        "First: https://replace-this-with-your-url.com/posts/"
    ));
    assert!(file_contains!(
        public,
        "posts/page/4/index.html",
        "Last: https://replace-this-with-your-url.com/posts/page/5/"
    ));

    // sitemap contains the pager pages
    assert!(file_contains!(
        public,
        "sitemap.xml",
        "<loc>https://replace-this-with-your-url.com/posts/page/4/</loc>"
    ));
}

#[test]
fn can_build_site_with_pagination_for_index() {
    let (_, _tmp_dir, public) = build_site_with_setup("test_site", |mut site| {
        site.load().unwrap();
        {
            let index = site
                .library
                .get_section_mut(&site.base_path.join("content").join("_index.md"))
                .unwrap();
            index.meta.paginate_by = Some(2);
            index.meta.template = Some("index_paginated.html".to_string());
        }
        (site, false)
    });

    assert!(&public.exists());

    assert!(file_exists!(public, "index.html"));
    assert!(file_exists!(public, "sitemap.xml"));
    assert!(file_exists!(public, "robots.txt"));
    assert!(file_exists!(public, "a-fixed-url/index.html"));
    assert!(file_exists!(public, "posts/python/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/nix/index.html"));
    assert!(file_exists!(public, "posts/with-assets/index.html"));

    // And pagination!
    assert!(file_exists!(public, "page/1/index.html"));
    // even if there is no pages, only the section!
    assert!(file_exists!(public, "paginated/page/1/index.html"));
    assert!(file_exists!(public, "paginated/index.html"));
    // should redirect to index
    assert!(file_contains!(
        public,
        "page/1/index.html",
        "http-equiv=\"refresh\" content=\"0;url=https://replace-this-with-your-url.com/\""
    ));
    assert!(file_contains!(public, "index.html", "Num pages: 1"));
    assert!(file_contains!(public, "index.html", "Current index: 1"));
    assert!(file_contains!(public, "index.html", "First: https://replace-this-with-your-url.com/"));
    assert!(file_contains!(public, "index.html", "Last: https://replace-this-with-your-url.com/"));
    assert_eq!(file_contains!(public, "index.html", "has_prev"), false);
    assert_eq!(file_contains!(public, "index.html", "has_next"), false);

    // sitemap contains the pager pages
    assert!(file_contains!(
        public,
        "sitemap.xml",
        "<loc>https://replace-this-with-your-url.com/page/1/</loc>"
    ))
}

#[test]
fn can_build_site_with_pagination_for_taxonomy() {
    let (_, _tmp_dir, public) = build_site_with_setup("test_site", |mut site| {
        site.config.taxonomies.push(Taxonomy {
            name: "tags".to_string(),
            paginate_by: Some(2),
            paginate_path: None,
            rss: true,
            lang: None,
        });
        site.load().unwrap();

        for (i, (_, page)) in site.library.pages_mut().iter_mut().enumerate() {
            page.meta.taxonomies = {
                let mut taxonomies = HashMap::new();
                taxonomies.insert(
                    "tags".to_string(),
                    vec![if i % 2 == 0 { "A" } else { "B" }.to_string()],
                );
                taxonomies
            };
        }
        site.populate_taxonomies().unwrap();
        (site, false)
    });

    assert!(&public.exists());

    assert!(file_exists!(public, "index.html"));
    assert!(file_exists!(public, "sitemap.xml"));
    assert!(file_exists!(public, "robots.txt"));
    assert!(file_exists!(public, "a-fixed-url/index.html"));
    assert!(file_exists!(public, "posts/python/index.html"));
    assert!(file_exists!(public, "posts/tutorials/devops/nix/index.html"));
    assert!(file_exists!(public, "posts/with-assets/index.html"));

    // Tags
    assert!(file_exists!(public, "tags/index.html"));
    // With RSS
    assert!(file_exists!(public, "tags/a/rss.xml"));
    assert!(file_exists!(public, "tags/b/rss.xml"));
    // And pagination!
    assert!(file_exists!(public, "tags/a/page/1/index.html"));
    assert!(file_exists!(public, "tags/b/page/1/index.html"));
    assert!(file_exists!(public, "tags/a/page/2/index.html"));
    assert!(file_exists!(public, "tags/b/page/2/index.html"));

    // should redirect to posts/
    assert!(file_contains!(
        public,
        "tags/a/page/1/index.html",
        "http-equiv=\"refresh\" content=\"0;url=https://replace-this-with-your-url.com/tags/a/\""
    ));
    assert!(file_contains!(public, "tags/a/index.html", "Num pagers: 6"));
    assert!(file_contains!(public, "tags/a/index.html", "Page size: 2"));
    assert!(file_contains!(public, "tags/a/index.html", "Current index: 1"));
    assert!(!file_contains!(public, "tags/a/index.html", "has_prev"));
    assert!(file_contains!(public, "tags/a/index.html", "has_next"));
    assert!(file_contains!(
        public,
        "tags/a/index.html",
        "First: https://replace-this-with-your-url.com/tags/a/"
    ));
    assert!(file_contains!(
        public,
        "tags/a/index.html",
        "Last: https://replace-this-with-your-url.com/tags/a/page/6/"
    ));
    assert_eq!(file_contains!(public, "tags/a/index.html", "has_prev"), false);

    // sitemap contains the pager pages
    assert!(file_contains!(
        public,
        "sitemap.xml",
        "<loc>https://replace-this-with-your-url.com/tags/a/page/6/</loc>"
    ))
}

#[test]
fn can_build_rss_feed() {
    let (_, _tmp_dir, public) = build_site("test_site");

    assert!(&public.exists());
    assert!(file_exists!(public, "rss.xml"));
    // latest article is posts/extra-syntax.md
    assert!(file_contains!(public, "rss.xml", "Extra Syntax"));
    // Next is posts/simple.md
    assert!(file_contains!(public, "rss.xml", "Simple article with shortcodes"));
}

#[test]
fn can_build_search_index() {
    let (_, _tmp_dir, public) = build_site_with_setup("test_site", |mut site| {
        site.config.build_search_index = true;
        (site, true)
    });

    assert!(Path::new(&public).exists());
    assert!(file_exists!(public, "elasticlunr.min.js"));
    assert!(file_exists!(public, "search_index.en.js"));
}

#[test]
fn can_build_with_extra_syntaxes() {
    let (_, _tmp_dir, public) = build_site("test_site");

    assert!(&public.exists());
    assert!(file_exists!(public, "posts/extra-syntax/index.html"));
    assert!(file_contains!(
        public,
        "posts/extra-syntax/index.html",
        r#"<span style="color:#d08770;">test</span>"#
    ));
}

#[test]
fn can_apply_page_templates() {
    let mut path = env::current_dir().unwrap().parent().unwrap().parent().unwrap().to_path_buf();
    path.push("test_site");
    let mut site = Site::new(&path, "config.toml").unwrap();
    site.load().unwrap();

    let template_path = path.join("content").join("applying_page_template");

    let template_section = site.library.get_section(&template_path.join("_index.md")).unwrap();
    assert_eq!(template_section.subsections.len(), 2);
    assert_eq!(template_section.pages.len(), 2);

    let from_section_config = site.library.get_page_by_key(template_section.pages[0]);
    assert_eq!(from_section_config.meta.template, Some("page_template.html".into()));
    assert_eq!(from_section_config.meta.title, Some("From section config".into()));

    let override_page_template = site.library.get_page_by_key(template_section.pages[1]);
    assert_eq!(override_page_template.meta.template, Some("page_template_override.html".into()));
    assert_eq!(override_page_template.meta.title, Some("Override".into()));

    // It should have applied recursively as well
    let another_section =
        site.library.get_section(&template_path.join("another_section").join("_index.md")).unwrap();
    assert_eq!(another_section.subsections.len(), 0);
    assert_eq!(another_section.pages.len(), 1);

    let changed_recursively = site.library.get_page_by_key(another_section.pages[0]);
    assert_eq!(changed_recursively.meta.template, Some("page_template.html".into()));
    assert_eq!(changed_recursively.meta.title, Some("Changed recursively".into()));

    // But it should not have override a children page_template
    let yet_another_section = site
        .library
        .get_section(&template_path.join("yet_another_section").join("_index.md"))
        .unwrap();
    assert_eq!(yet_another_section.subsections.len(), 0);
    assert_eq!(yet_another_section.pages.len(), 1);

    let child = site.library.get_page_by_key(yet_another_section.pages[0]);
    assert_eq!(child.meta.template, Some("page_template_child.html".into()));
    assert_eq!(child.meta.title, Some("Local section override".into()));
}

// https://github.com/getzola/zola/issues/571
#[test]
fn can_build_site_custom_builtins_from_theme() {
    let (_, _tmp_dir, public) = build_site("test_site");

    assert!(&public.exists());
    // 404.html is a theme template.
    assert!(file_exists!(public, "404.html"));
    assert!(file_contains!(public, "404.html", "Oops"));
}