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test: cleanup test-utils-inherits.js #12602

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test: cleanup test-utils-inherits.js #12602

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888d1c1
test: cleanup test-util-inherits.js
RobotMermaid Apr 22, 2017
bf6a127
test: cleanup test-util-inherits.js
RobotMermaid Apr 22, 2017
99cef2f
test: cleanup test-util-inherits.js
RobotMermaid Apr 24, 2017
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16 changes: 13 additions & 3 deletions test/parallel/test-util-inherits.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,10 @@
require('../common');
const assert = require('assert');
const inherits = require('util').inherits;
const errCheck =
new RegExp('^TypeError: The super constructor to "inherits" must not be ' +
'null or undefined$');


// super constructor
function A() {
Expand Down Expand Up @@ -75,6 +79,12 @@ assert.strictEqual(e.e(), 'e');
assert.strictEqual(e.constructor, E);

// should throw with invalid arguments
assert.throws(function() { inherits(A, {}); }, TypeError);
assert.throws(function() { inherits(A, null); }, TypeError);
assert.throws(function() { inherits(null, A); }, TypeError);
assert.throws(function() {
inherits(A, {});
}, /^TypeError: The super constructor to "inherits" must have a prototype$/);
assert.throws(function() {
inherits(A, null);
}, errCheck);
assert.throws(function() {
inherits(null, A);
}, /^TypeError: The constructor to "inherits" must not be null or undefined$/);