test: improve assert messages in repl-reset-event

PR-URL: #16836
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-repl-reset-event.js

@@ -25,6 +25,7 @@ common.globalCheck = false;
 
 const assert = require('assert');
 const repl = require('repl');
+const util = require('util');
 
 // Create a dummy stream that does nothing
 const dummy = new common.ArrayStream();
@@ -38,11 +39,13 @@ function testReset(cb) {
   r.context.foo = 42;
   r.on('reset', common.mustCall(function(context) {
     assert(!!context, 'REPL did not emit a context with reset event');
-    assert.strictEqual(context, r.context, 'REPL emitted incorrect context');
+    assert.strictEqual(context, r.context, 'REPL emitted incorrect context. ' +
+    `context is ${util.inspect(context)}, expected ${util.inspect(r.context)}`);
     assert.strictEqual(
       context.foo,
       undefined,
-      'REPL emitted the previous context, and is not using global as context'
+      'REPL emitted the previous context and is not using global as context. ' +
+      `context.foo is ${context.foo}, expected undefined.`
     );
     context.foo = 42;
     cb();
@@ -61,7 +64,8 @@ function testResetGlobal() {
     assert.strictEqual(
       context.foo,
       42,
-      '"foo" property is missing from REPL using global as context'
+      '"foo" property is different from REPL using global as context. ' +
+      `context.foo is ${context.foo}, expected 42.`
     );
   }));
   r.resetContext();