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