Fix `src: true`, which was broken in v1.5.0.

Also add a test case for `src: true` which is how 1.5.0 got released
without noticing this.

Fixes #296.

CHANGES.md

@@ -8,11 +8,14 @@ Known issues:
 
 ## bunyan 1.5.1 (not yet released)
 
-(nothing yet)
+- [issue #296] Fix `src: true`, which was broken in v1.5.0.
 
 
 ## bunyan 1.5.0
 
+Note: *Bad release.* The addition of `'use strict';` broke Bunyan's `src: true`
+feature. Use 1.5.1 instead.
+
 - [pull #236, issue #231, issue #223] Fix strict mode in the browser.
 - [pull #282, issue #213] Fixes bunyan to work with webpack. By Denis Izmaylov.
 - [pull #294] Update to dtrace-provider 0.6 to fix with node 4.0 and io.js 3.0.

lib/bunyan.js

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2014 Trent Mick. All rights reserved.
- * Copyright (c) 2014 Joyent Inc. All rights reserved.
+ * Copyright (c) 2015 Trent Mick.
+ * Copyright (c) 2015 Joyent Inc.
  *
  * The bunyan logging library for node.js.
  *
@@ -8,15 +8,13 @@
  * vim: expandtab:ts=4:sw=4
  */
 
-'use strict';
-
 var VERSION = '1.5.1';
 
-// Bunyan log format version. This becomes the 'v' field on all log records.
-// `0` is until I release a version '1.0.0' of node-bunyan. Thereafter,
-// starting with `1`, this will be incremented if there is any backward
-// incompatible change to the log record format. Details will be in
-// 'CHANGES.md' (the change log).
+/*
+ * Bunyan log format version. This becomes the 'v' field on all log records.
+ * This will be incremented if there is any backward incompatible change to
+ * the log record format. Details will be in 'CHANGES.md' (the change log).
+ */
 var LOG_VERSION = 0;
 
 
@@ -149,6 +147,10 @@ if (!format) {
  * See <http://code.google.com/p/v8/wiki/JavaScriptStackTraceApi>.
  */
 function getCaller3Info() {
+    if (this === undefined) {
+        // Cannot access caller info in 'strict' mode.
+        return;
+    }
     var obj = {};
     var saveLimit = Error.stackTraceLimit;
     var savePrepare = Error.prepareStackTrace;

test/src.test.js

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2015 Trent Mick.
+ *
+ * Test `src: true` usage.
+ */
+
+// Intentionally on line 8 for tests below:
+function logSomething(log) { log.info('something'); }
+
+
+var format = require('util').format;
+var Logger = require('../lib/bunyan');
+
+// node-tap API
+if (require.cache[__dirname + '/tap4nodeunit.js'])
+        delete require.cache[__dirname + '/tap4nodeunit.js'];
+var tap4nodeunit = require('./tap4nodeunit.js');
+var after = tap4nodeunit.after;
+var before = tap4nodeunit.before;
+var test = tap4nodeunit.test;
+
+
+function CapturingStream(recs) {
+    this.recs = recs;
+}
+CapturingStream.prototype.write = function (rec) {
+    this.recs.push(rec);
+}
+
+
+test('src', function (t) {
+    var recs = [];
+
+    var log = new Logger({
+        name: 'src-test',
+        src: true,
+        streams: [
+            {
+                stream: new CapturingStream(recs),
+                type: 'raw'
+            }
+        ]
+    });
+
+    log.info('top-level');
+    logSomething(log);
+
+    t.equal(recs.length, 2);
+    recs.forEach(function (rec) {
+        t.ok(rec.src);
+        t.equal(typeof (rec.src), 'object');
+        t.equal(rec.src.file, __filename);
+        t.ok(rec.src.line);
+        t.equal(typeof (rec.src.line), 'number');
+    });
+    var rec = recs[1];
+    t.ok(rec.src.func);
+    t.equal(rec.src.func, 'logSomething');
+    t.equal(rec.src.line, 8);
+
+    t.end();
+});