Migrate no_index_for_print_html to BookTest

tests/rendered_output.rs

@@ -306,19 +306,6 @@ fn theme_dir_overrides_work_correctly() {
     dummy_book::assert_contains_strings(built_index, &["This is a modified index.hbs!"]);
 }
 
-#[test]
-fn no_index_for_print_html() {
-    let temp = DummyBook::new().build().unwrap();
-    let md = MDBook::load(temp.path()).unwrap();
-    md.build().unwrap();
-
-    let print_html = temp.path().join("book/print.html");
-    assert_contains_strings(print_html, &[r##"noindex"##]);
-
-    let index_html = temp.path().join("book/index.html");
-    assert_doesnt_contain_strings(index_html, &[r##"noindex"##]);
-}
-
 #[test]
 fn redirects_are_emitted_correctly() {
     let temp = DummyBook::new().build().unwrap();

tests/testsuite/print.rs

@@ -21,3 +21,12 @@ both the print page and the non-print page.</p>
 <h2 id="some-section"><a class="header" href="#some-section">Some section</a></h2>
 "##]]);
 }
+
+// Checks that print.html is noindex.
+#[test]
+fn noindex() {
+    let robots = r#"<meta name="robots" content="noindex">"#;
+    BookTest::from_dir("print/noindex")
+        .check_file_contains("book/print.html", robots)
+        .check_file_doesnt_contain("book/index.html", robots);
+}

tests/testsuite/print/noindex/src/SUMMARY.md

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