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promises-test.js

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var java = require("../testHelpers").java;

var nodeunit = require("nodeunit");

var util = require("util");

function isOpenJDK() {

var javaVendor = java.callStaticMethodSync('java.lang.System', 'getProperty', 'java.vendor');

var javaVersion = java.callStaticMethodSync('java.lang.System', 'getProperty', 'java.version');

return /Sun Microsystems Inc/.test(javaVendor) && /^1\.6/.test(javaVersion);

}

exports['Promises'] = nodeunit.testCase({

"create an instance of a class and call methods (getClassPromise & getNamePromise)": function(test) {

// Adapted from a test in simple-test.js

java.newInstance("java.util.ArrayList", function(err, list) {

test.ifError(err);

test.ok(list);

list.getClassPromise()

.then(function(clazz) {

test.ok(clazz);

return clazz.getNamePromise();

})

.then(function(name) {

test.strictEqual(name, "java.util.ArrayList");

})

.catch(function(err) {

test.ifError(err);

})

.then(function() {

test.expect(4);

test.done();

});

});

},

"import and execute promisified static method": function (test) {

var Test = java.import('Test');

Test.staticMethodPromise(99)

.then(function (result) {

test.strictEqual(100, result);

})

.catch(function (err) {

test.ifError(err);

})

.then(function() {

test.expect(1);

test.done();

});

},

"run promisified method of Java module (newInstancePromise)": function (test) {

java.newInstancePromise("java.util.ArrayList")

.then(function(list) {

test.ok(list);

return list.getClassPromise();

})

.then(function(clazz) {

test.ok(clazz);

return clazz.getNamePromise();

})

.then(function(name) {

test.strictEqual(name, "java.util.ArrayList");

})

.catch(function(err) {

test.ifError(err);

})

.then(function() {

test.expect(3);

test.done();

});

},

"run chained promisified methods (of class java.util.ArrayList)": function (test) {

var openJDK = isOpenJDK();

if (openJDK) {

// This test exposes a latent node-java bug with OpenJDK 1.6.

// See https://github.com/joeferner/node-java/issues/186

// For now, we simply don't run this test on OpenJDK 1.6.

test.done();

return;

}

var list;

var it;

var expectException = false;

java.newInstancePromise("java.util.ArrayList")

.then(function(_list) {

test.ok(_list);

list = _list;

return list.getClassPromise();

})

.then(function(clazz) {

test.ok(clazz);

return clazz.getNamePromise();

})

.then(function(name) {

test.strictEqual(name, "java.util.ArrayList");

})

.then(function() {

list.addPromise('hello');

})

.then(function() {

list.addPromise('world');

})

.then(function() {

list.addPromise('boo');

})

.then(function() {

return list.iteratorPromise();

})

.then(function(_it) {

test.ok(_it);

it = _it;

return it.nextPromise();

})

.then(function(val) {

test.ok(val);

console.log(typeof val, val);

test.strictEqual(val, 'hello'); // java.lang.InternalError exception thrown here with OpenJDK

return it.nextPromise();

})

.then(function(val) {

test.ok(val);

console.log(typeof val, val);

test.strictEqual(val, 'world');

return it.nextPromise();

})

.then(function(val) {

test.ok(val);

console.log(typeof val, val);

test.strictEqual(val, 'boo');

return it.hasNextPromise();

})

.then(function(more) {

console.log(typeof more, more);

test.strictEqual(more, false);

expectException = true;

return it.nextPromise();

})

.catch(function(err) {

test.ok(expectException);

})

.then(function() {

test.expect(12);

test.done();

});

}

});