lock: support lock-write for fetch command (#3787)

cli/lib.rs

@@ -289,6 +289,17 @@ fn fetch_command(flags: DenoFlags) {
   let main_future = async move {
     let result = worker.execute_mod_async(&main_module, None, true).await;
     js_check(result);
+    if state.flags.lock_write {
+      if let Some(ref lockfile) = state.lockfile {
+        let g = lockfile.lock().unwrap();
+        if let Err(e) = g.write() {
+          print_err_and_exit(ErrBox::from(e));
+        }
+      } else {
+        eprintln!("--lock flag must be specified when using --lock-write");
+        std::process::exit(11);
+      }
+    }
   };
 
   tokio_util::run(main_future);

cli/tests/integration_tests.rs

@@ -391,6 +391,13 @@ itest!(_054_info_local_imports {
   exit_code: 0,
 });
 
+itest!(lock_write_fetch {
+  args:
+    "run --allow-read --allow-write --allow-env --allow-run lock_write_fetch.ts",
+  output: "lock_write_fetch.ts.out",
+  exit_code: 0,
+});
+
 itest!(lock_check_ok {
   args: "run --lock=lock_check_ok.json http://127.0.0.1:4545/cli/tests/003_relative_import.ts",
   output: "003_relative_import.ts.out",

cli/tests/lock_write_fetch.ts

@@ -0,0 +1,44 @@
+try {
+  Deno.removeSync("./lock_write_fetch.json");
+} catch {}
+
+const fetchProc = Deno.run({
+  stdout: "null",
+  stderr: "null",
+  args: [
+    Deno.execPath(),
+    "fetch",
+    "--reload",
+    "--lock=lock_write_fetch.json",
+    "--lock-write",
+    "https_import.ts"
+  ]
+});
+
+const fetchCode = (await fetchProc.status()).code;
+console.log(`fetch code: ${fetchCode}`);
+
+const fetchCheckProc = Deno.run({
+  stdout: "null",
+  stderr: "null",
+  args: [
+    Deno.execPath(),
+    "fetch",
+    "--lock=lock_write_fetch.json",
+    "https_import.ts"
+  ]
+});
+
+const fetchCheckProcCode = (await fetchCheckProc.status()).code;
+console.log(`fetch check code: ${fetchCheckProcCode}`);
+
+const runProc = Deno.run({
+  stdout: "null",
+  stderr: "null",
+  args: [Deno.execPath(), "--lock=lock_write_fetch.json", "https_import.ts"]
+});
+
+const runCode = (await runProc.status()).code;
+console.log(`run code: ${runCode}`);
+
+Deno.removeSync("./lock_write_fetch.json");

cli/tests/lock_write_fetch.ts.out

@@ -0,0 +1,3 @@
+fetch code: 0
+fetch check code: 0
+run code: 0