test: add mustCallAtLeast

PR-URL: https://github.com/nodejs/node/pull/12935
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 44 insertions, 3 deletions

diff --git a/test/parallel/test-common.js b/test/parallel/test-common.js
index 2bda20acd9..0a4e1d72f0 100644
--- a/test/parallel/test-common.js
+++ b/test/parallel/test-common.js
@@ -22,7 +22,8 @@
 'use strict';
 const common = require('../common');
 const assert = require('assert');
-
+const {join} = require('path');
+const {execFile} = require('child_process');
 
 // test for leaked global detection
 global.gc = 42;  // Not a valid global unless --expose_gc is set.
@@ -33,12 +34,15 @@ delete global.gc;
 // common.mustCall() tests
 assert.throws(function() {
   common.mustCall(function() {}, 'foo');
-}, /^TypeError: Invalid expected value: foo$/);
+}, /^TypeError: Invalid exact value: foo$/);
 
 assert.throws(function() {
   common.mustCall(function() {}, /foo/);
-}, /^TypeError: Invalid expected value: \/foo\/$/);
+}, /^TypeError: Invalid exact value: \/foo\/$/);
 
+assert.throws(function() {
+  common.mustCallAtLeast(function() {}, /foo/);
+}, /^TypeError: Invalid minimum value: \/foo\/$/);
 
 // assert.fail() tests
 assert.throws(
@@ -47,3 +51,40 @@ assert.throws(
     code: 'ERR_ASSERTION',
     message: /^fhqwhgads$/
   }));
+
+const fnOnce = common.mustCall(() => {});
+fnOnce();
+const fnTwice = common.mustCall(() => {}, 2);
+fnTwice();
+fnTwice();
+const fnAtLeast1Called1 = common.mustCallAtLeast(() => {}, 1);
+fnAtLeast1Called1();
+const fnAtLeast1Called2 = common.mustCallAtLeast(() => {}, 1);
+fnAtLeast1Called2();
+fnAtLeast1Called2();
+const fnAtLeast2Called2 = common.mustCallAtLeast(() => {}, 2);
+fnAtLeast2Called2();
+fnAtLeast2Called2();
+const fnAtLeast2Called3 = common.mustCallAtLeast(() => {}, 2);
+fnAtLeast2Called3();
+fnAtLeast2Called3();
+fnAtLeast2Called3();
+
+const failFixtures = [
+  [
+    join(common.fixturesDir, 'failmustcall1.js'),
+    'Mismatched <anonymous> function calls. Expected exactly 2, actual 1.'
+  ], [
+    join(common.fixturesDir, 'failmustcall2.js'),
+    'Mismatched <anonymous> function calls. Expected at least 2, actual 1.'
+  ]
+];
+for (const p of failFixtures) {
+  const [file, expected] = p;
+  execFile(process.argv[0], [file], common.mustCall((ex, stdout, stderr) => {
+    assert.ok(ex);
+    assert.strictEqual(stderr, '');
+    const firstLine = stdout.split('\n').shift();
+    assert.strictEqual(firstLine, expected);
+  }));
+}