Test the --web-bundle options for the v2 CLI

tests/executable.rs

@@ -737,6 +737,69 @@ fn v2_build_multiple_outputs() {
     success_or_panic(&output);
 }
 
+/// Test various web bundle overrides for the v2 CLI
+#[cfg(feature = "serialization")]
+#[test]
+fn v2_bundle_overrides() {
+    let arg_bad_bundle = ["--web-bundle", "overriden"];
+    let arg_good_bundle = ["--web-bundle", "test-bundle://"];
+
+    // test  `-X new` with a bad bundle
+    let tempdir = setup_and_copy_files(&[]);
+    let temppath = tempdir.path().to_owned();
+    let output = run_tectonic(&temppath, &[&arg_bad_bundle[..], &["-X", "new"]].concat());
+    error_or_panic(&output);
+
+    // test `-X new`
+    let valid_args: Vec<Vec<&str>> = vec![
+        // different positions
+        [&arg_good_bundle[..], &["-X", "new"]].concat(),
+        [&["-X"], &arg_good_bundle[..], &["new"]].concat(),
+        [&["-X", "new"], &arg_good_bundle[..]].concat(),
+        // overriding vendor presets
+        [&arg_bad_bundle[..], &arg_good_bundle[..], &["-X", "new"]].concat(),
+        [&arg_bad_bundle[..], &["-X"], &arg_good_bundle[..], &["new"]].concat(),
+        [&arg_bad_bundle[..], &["-X", "new"], &arg_good_bundle[..]].concat(),
+        // stress test
+        [
+            &arg_bad_bundle[..],
+            &arg_bad_bundle[..],
+            &["-X"],
+            &arg_bad_bundle[..],
+            &arg_bad_bundle[..],
+            &["new"],
+            &arg_bad_bundle[..],
+            &arg_good_bundle[..],
+        ]
+        .concat(),
+    ];
+
+    for args in valid_args {
+        let tempdir = setup_and_copy_files(&[]);
+        let temppath = tempdir.path().to_owned();
+        let output = run_tectonic(&temppath, &args);
+        success_or_panic(&output);
+    }
+
+    // test `-X build`
+    let (_tempdir, temppath) = setup_v2();
+    let output = run_tectonic(
+        &temppath,
+        &[
+            &arg_bad_bundle[..],
+            &arg_bad_bundle[..],
+            &["-X"],
+            &arg_bad_bundle[..],
+            &arg_bad_bundle[..],
+            &["build"],
+            &arg_bad_bundle[..],
+            &arg_good_bundle[..],
+        ]
+        .concat(),
+    );
+    success_or_panic(&output);
+}
+
 #[test]
 #[cfg(feature = "serialization")]
 fn v2_dump_basic() {