Migrate copy-fonts=false empty fonts.css to BookTest

tests/rendered_output.rs

@@ -323,19 +323,6 @@ fn custom_fonts() {
         contents.contains("fonts/fonts.css")
     };
 
-    // copy-fonts=false with empty fonts.css
-    let temp = TempFileBuilder::new().prefix("mdbook").tempdir().unwrap();
-    let p = temp.path();
-    MDBook::init(p).build().unwrap();
-    write_file(&p.join("theme/fonts"), "fonts.css", b"").unwrap();
-    let config = Config::from_str("output.html.copy-fonts = false").unwrap();
-    MDBook::load_with_config(p, config)
-        .unwrap()
-        .build()
-        .unwrap();
-    assert!(!has_fonts_css(p));
-    assert!(!p.join("book/fonts").exists());
-
     // copy-fonts=false with fonts theme
     let temp = TempFileBuilder::new().prefix("mdbook").tempdir().unwrap();
     let p = temp.path();

tests/testsuite/theme.rs

@@ -155,3 +155,18 @@ Add an empty `theme/fonts/fonts.css` file to squelch this warning.
         .check_file_doesnt_contain("book/index.html", "fonts.css")
         .check_file_list("book/fonts", str![[""]]);
 }
+
+// copy-fonts=false, empty fonts.css
+#[test]
+fn copy_fonts_false_with_empty_fonts_css() {
+    BookTest::from_dir("theme/copy_fonts_false_with_empty_fonts_css")
+        .run("build", |cmd| {
+            cmd.expect_stderr(str![[r#"
+[TIMESTAMP] [INFO] (mdbook::book): Book building has started
+[TIMESTAMP] [INFO] (mdbook::book): Running the html backend
+
+"#]]);
+        })
+        .check_file_doesnt_contain("book/index.html", "fonts.css")
+        .check_file_list("book/fonts", str![[""]]);
+}

tests/testsuite/theme/copy_fonts_false_with_empty_fonts_css/book.toml

@@ -0,0 +1,2 @@
+[output.html]
+copy-fonts = false

tests/testsuite/theme/copy_fonts_false_with_empty_fonts_css/src/SUMMARY.md

@@ -0,0 +1 @@
+- [Intro](index.md)