77 lines
2.1 KiB
JavaScript
77 lines
2.1 KiB
JavaScript
"use strict";
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var jsc = require("jsverify");
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var refute = require("@sinonjs/referee-sinon").refute;
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var functionName = require("./function-name");
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describe("function-name", function() {
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it("should return empty string if func is falsy", function() {
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jsc.assertForall("falsy", function(fn) {
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return functionName(fn) === "";
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});
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});
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it("should use displayName by default", function() {
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jsc.assertForall("nestring", function(displayName) {
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var fn = { displayName: displayName };
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return functionName(fn) === fn.displayName;
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});
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});
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it("should use name if displayName is not available", function() {
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jsc.assertForall("nestring", function(name) {
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var fn = { name: name };
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return functionName(fn) === fn.name;
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});
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});
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it("should fallback to string parsing", function() {
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jsc.assertForall("nat", function(naturalNumber) {
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var name = "fn" + naturalNumber;
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var fn = {
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toString: function() {
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return "\nfunction " + name;
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}
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};
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return functionName(fn) === name;
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});
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});
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it("should not fail when a name cannot be found", function() {
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refute.exception(function() {
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var fn = {
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toString: function() {
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return "\nfunction (";
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}
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};
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functionName(fn);
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});
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});
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it("should not fail when toString is undefined", function() {
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refute.exception(function() {
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functionName(Object.create(null));
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});
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});
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it("should not fail when toString throws", function() {
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refute.exception(function() {
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var fn;
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try {
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// eslint-disable-next-line no-eval
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fn = eval("(function*() {})")().constructor;
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} catch (e) {
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// env doesn't support generators
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return;
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}
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functionName(fn);
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});
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});
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});
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