feat(std/log): expose logger name to LogRecord (#6316)

1 files changed, 51 insertions, 1 deletions

diff --git a/std/log/mod_test.ts b/std/log/mod_test.ts
index 98ac093c8..9de5d76af 100644
--- a/std/log/mod_test.ts
+++ b/std/log/mod_test.ts
@@ -1,7 +1,24 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 import { assert, assertEquals } from "../testing/asserts.ts";
-import { getLogger, debug, info, warning, error, critical } from "./mod.ts";
+import {
+  getLogger,
+  debug,
+  info,
+  warning,
+  error,
+  critical,
+  setup,
+} from "./mod.ts";
 import { Logger } from "./logger.ts";
+import { BaseHandler } from "./handlers.ts";
+
+class TestHandler extends BaseHandler {
+  public messages: string[] = [];
+
+  public log(str: string): void {
+    this.messages.push(str);
+  }
+}
 
 let logger: Logger | null = null;
 try {
@@ -39,3 +56,36 @@ Deno.test("default loggers work as expected", function (): void {
   assertEquals(criticalData, "foo");
   assertEquals(criticalResolver, "bar");
 });
+
+Deno.test({
+  name: "Logging config works as expected with logger names",
+  async fn() {
+    const consoleHandler = new TestHandler("DEBUG");
+    const anotherConsoleHandler = new TestHandler("DEBUG", {
+      formatter: "[{loggerName}] {levelName} {msg}",
+    });
+    await setup({
+      handlers: {
+        console: consoleHandler,
+        anotherConsole: anotherConsoleHandler,
+      },
+
+      loggers: {
+        // configure default logger available via short-hand methods above
+        default: {
+          level: "DEBUG",
+          handlers: ["console"],
+        },
+
+        tasks: {
+          level: "ERROR",
+          handlers: ["anotherConsole"],
+        },
+      },
+    });
+    getLogger().debug("hello");
+    getLogger("tasks").error("world");
+    assertEquals(consoleHandler.messages[0], "DEBUG hello");
+    assertEquals(anotherConsoleHandler.messages[0], "[tasks] ERROR world");
+  },
+});