How do you assert that an exception was thrown in JUnit 4 tests?
How to use JUnit 4 to test some code to throw exceptions?
Although I can certainly do such things:
@Test
public void testFooThrowsIndexOutOfBoundsException() {
boolean thrown = false;
try {
foo.doStuff();
} catch (IndexOutOfBoundsException e) {
thrown = true;
}
assertTrue(thrown);
}
I remember in this case, having a ...
Posted by ivki on Thu, 05 Dec 2019 07:17:29 -0800
JavaScript learning notes - objects
Chapter IV understanding object
1 Description
Object state: attribute, behavior: method;
The object definition is placed in curly brackets;
Use colons to separate property names and property values;
Comma separated attribute names and attribute value pairs, including methods;
There is no comma after the last attribute value;
The property name c ...
Posted by jonathanellis on Thu, 05 Dec 2019 01:36:19 -0800
02 flask user authentication and role management database design
Authentication management
New database
create database `flasky` default character set utf8 collate utf8_general_ci;
Required plug-ins
Flash mail: used to send authentication information
Flask login: used to manage session s
Werzeug + its dangerous: used for adding salt to the password hash
Flash WTF: form object creation
Flash bootstrap: bo ...
Posted by gladiator83x on Wed, 04 Dec 2019 23:29:13 -0800
Shallow and deep copy of JavaScript
I. understanding
Shallow copy only copies the pointer to an object, not the object itself. The new and old objects still share the same block of memory. But deep copy will create another object that is exactly the same. The new object does not share memory with the original object, and the new object will not be changed to the original object.
...
Posted by jawaidpk on Wed, 04 Dec 2019 22:45:26 -0800
Get started with React 0x013: Context
0x000 overview
ContextIs the overall situation.stateLa～～
0x001 problem
First, we need the chestnutsTopbarUsed intheme，howeverthemeMust be passed in from the outermost, so it must be passed in from the outermostApp，Re introductionTopBar，This is only passed twice, but if all components need tothemeWhat about it? Or a very deep component need ...
Posted by chetanrakesh on Wed, 04 Dec 2019 20:10:42 -0800
Startup configuration for getting started with NetCore 2.0 MVC
Just contacted netcore, the following configuration instructions I am using and some points to be injected
1. I don't want to use constructor injection in my project, so I refer to the third-party Autofac package to manage my service. In the controller, I just need to create public iClass class{get;set;}
2. I use dll reflection to inject serv ...
Posted by powerspike on Wed, 04 Dec 2019 01:09:58 -0800
Getting started with Tablestore -- using global secondary index
Summary
The global secondary index has the same storage structure as the main table. Its index column can be the primary key column or predefined column of the main table, and its attribute column is the predefined column of the main table. The data written to the main table is asynchronously synchronized to the global secondary index after a ...
Posted by agmorgan on Tue, 03 Dec 2019 22:13:23 -0800
Star rating of jQuery cases
Let's take a look at the effect:Code part:html:
<body>
<ul class="comment">
<li>☆</li>
<li>☆</li>
<li>☆</li>
<li>☆</li>
<li>☆</li>
</ul>
</body>
css
<style>
* {
padding: 0;
margin: 0;
...
Posted by articlesocial on Tue, 03 Dec 2019 17:20:25 -0800
Front end performance optimization lazy load and preload
Lazy loading
code implementation
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" h ...
Posted by Fastback_68 on Tue, 03 Dec 2019 02:51:07 -0800
Hongsoft face recognition 3.0 - Introduction to image data structure (C + +)
Since the 2.0 SDK was opened by hongsoft, our company has used the hongsoft SDK in the face recognition access control application due to the characteristics of free and offline use. The recognition effect is good, so we pay more attention to the official dynamics of the hongsoft SDK. Recently, ArcFace 3.0 SDK version was launched, which really ...
Posted by heinrich on Tue, 03 Dec 2019 00:37:15 -0800