Migrate failure_on_missing_file to BookTest

tests/rendered_output.rs

@@ -348,20 +348,6 @@ fn check_link_target_fallback() {
     );
 }
 
-/// Ensure building fails if `create-missing` is false and one of the files does
-/// not exist.
-#[test]
-fn failure_on_missing_file() {
-    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 = false;
-
-    let got = MDBook::load_with_config(temp.path(), cfg);
-    assert!(got.is_err());
-}
-
 /// Ensure a missing file is created if `create-missing` is true.
 #[test]
 fn create_missing_file_with_config() {

tests/testsuite/build.rs

@@ -16,3 +16,16 @@ fn basic_build() {
 "#]]);
     });
 }
+
+// Ensure building fails if `create-missing` is false and one of the files does
+// not exist.
+#[test]
+fn failure_on_missing_file() {
+    BookTest::from_dir("build/missing_file").run("build", |cmd| {
+        cmd.expect_failure().expect_stderr(str![[r#"
+[TIMESTAMP] [ERROR] (mdbook::utils): Error: Chapter file not found, ./chapter_1.md
+[TIMESTAMP] [ERROR] (mdbook::utils): [TAB]Caused By: [NOT_FOUND]
+
+"#]]);
+    });
+}

tests/testsuite/build/missing_file/book.toml

@@ -0,0 +1,5 @@
+[book]
+title = "missing_file"
+
+[build]
+create-missing = false

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

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