index.js
4.22 KB
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var tape = require("tape");
var asPromise = require("..");
tape.test("aspromise", function(test) {
test.test(this.name + " - resolve", function(test) {
function fn(arg1, arg2, callback) {
test.equal(this, ctx, "function should be called with this = ctx");
test.equal(arg1, 1, "function should be called with arg1 = 1");
test.equal(arg2, 2, "function should be called with arg2 = 2");
callback(null, arg2);
}
var ctx = {};
var promise = asPromise(fn, ctx, 1, 2);
promise.then(function(arg2) {
test.equal(arg2, 2, "promise should be resolved with arg2 = 2");
test.end();
}).catch(function(err) {
test.fail("promise should not be rejected (" + err + ")");
});
});
test.test(this.name + " - reject", function(test) {
function fn(arg1, arg2, callback) {
test.equal(this, ctx, "function should be called with this = ctx");
test.equal(arg1, 1, "function should be called with arg1 = 1");
test.equal(arg2, 2, "function should be called with arg2 = 2");
callback(arg1);
}
var ctx = {};
var promise = asPromise(fn, ctx, 1, 2);
promise.then(function() {
test.fail("promise should not be resolved");
}).catch(function(err) {
test.equal(err, 1, "promise should be rejected with err = 1");
test.end();
});
});
test.test(this.name + " - resolve twice", function(test) {
function fn(arg1, arg2, callback) {
test.equal(this, ctx, "function should be called with this = ctx");
test.equal(arg1, 1, "function should be called with arg1 = 1");
test.equal(arg2, 2, "function should be called with arg2 = 2");
callback(null, arg2);
callback(null, arg1);
}
var ctx = {};
var count = 0;
var promise = asPromise(fn, ctx, 1, 2);
promise.then(function(arg2) {
test.equal(arg2, 2, "promise should be resolved with arg2 = 2");
if (++count > 1)
test.fail("promise should not be resolved twice");
test.end();
}).catch(function(err) {
test.fail("promise should not be rejected (" + err + ")");
});
});
test.test(this.name + " - reject twice", function(test) {
function fn(arg1, arg2, callback) {
test.equal(this, ctx, "function should be called with this = ctx");
test.equal(arg1, 1, "function should be called with arg1 = 1");
test.equal(arg2, 2, "function should be called with arg2 = 2");
callback(arg1);
callback(arg2);
}
var ctx = {};
var count = 0;
var promise = asPromise(fn, ctx, 1, 2);
promise.then(function() {
test.fail("promise should not be resolved");
}).catch(function(err) {
test.equal(err, 1, "promise should be rejected with err = 1");
if (++count > 1)
test.fail("promise should not be rejected twice");
test.end();
});
});
test.test(this.name + " - reject error", function(test) {
function fn(callback) {
test.ok(arguments.length === 1 && typeof callback === "function", "function should be called with just a callback");
throw 3;
}
var promise = asPromise(fn, null);
promise.then(function() {
test.fail("promise should not be resolved");
}).catch(function(err) {
test.equal(err, 3, "promise should be rejected with err = 3");
test.end();
});
});
test.test(this.name + " - reject and error", function(test) {
function fn(callback) {
callback(3);
throw 4;
}
var count = 0;
var promise = asPromise(fn, null);
promise.then(function() {
test.fail("promise should not be resolved");
}).catch(function(err) {
test.equal(err, 3, "promise should be rejected with err = 3");
if (++count > 1)
test.fail("promise should not be rejected twice");
test.end();
});
});
});