Migrate create_missing_file_with_config to BookTest

tests/rendered_output.rs

@@ -348,20 +348,6 @@ fn check_link_target_fallback() {
     );
 }
 
-/// Ensure a missing file is created if `create-missing` is true.
-#[test]
-fn create_missing_file_with_config() {
-    let temp = DummyBook::new().build().unwrap();
-    fs::remove_file(temp.path().join("src").join("intro.md")).unwrap();
-
-    let mut cfg = Config::default();
-    cfg.build.create_missing = true;
-
-    assert!(!temp.path().join("src").join("intro.md").exists());
-    let _md = MDBook::load_with_config(temp.path(), cfg).unwrap();
-    assert!(temp.path().join("src").join("intro.md").exists());
-}
-
 /// This makes sure you can include a Rust file with `{{#playground example.rs}}`.
 /// Specification is in `guide/src/format/rust.md`
 #[test]

tests/testsuite/build.rs

@@ -29,3 +29,13 @@ fn failure_on_missing_file() {
 "#]]);
     });
 }
+
+// Ensure a missing file is created if `create-missing` is true.
+#[test]
+fn create_missing() {
+    let test = BookTest::from_dir("build/create_missing");
+    assert!(test.dir.join("src/SUMMARY.md").exists());
+    assert!(!test.dir.join("src/chapter_1.md").exists());
+    test.load_book();
+    assert!(test.dir.join("src/chapter_1.md").exists());
+}

tests/testsuite/build/create_missing/book.toml

@@ -0,0 +1,2 @@
+[book]
+title = "create_missing"

tests/testsuite/build/create_missing/src/SUMMARY.md

@@ -0,0 +1,3 @@
+# Summary
+
+- [Chapter 1](./chapter_1.md)