assert

问题 I have a ZombieJS node server on Heroku scrapping data from the internet. The server code is called from a for loop on the client side. Each iteration of the loop makes a server call which makes a Zombie scrape. Sometimes, the server will crash with the error below. It only happens when there is more than one iteration of the for loop. How can I make the code robust enough to handle multiple simultaneous client calls, each with a for loop. Code: var express = require('express'); var app =

问题 I have to work on a HTML page and verify the result (adding some texts, selecting some items from comboboxes, clicking on some button). For example action1, action2 and action3. After each action, I need to verify the result of the previous action. In QTP, we would use Report.Fail (Pass, warning) and go to the next action. Here in code UI, I'm using something like try{ Action1; Assert //some kind of assert Action2; Assert //some kind of assert Action3; Assert //some kind of assert } Catch

问题 I'm testing two objects (and a collection of them) but it fails even though they have the same type: I have done some research and its maybe because of the references, which they could be different. However, its still the same type and I don't know what Assert method to use. (The CollectionAssert.AreEquivalent also fails). Edited I'm also trying to check if the values of each field are the same, in that case, should I do an Assert.AreEqual for each field? -- thanks, all of the answers were

问题 I am looking for a solution to the following case: Suppose that you have 2 attributes in an XSD 1.1: "startDate" and "endDate". Suppose also that those are optional and you need to check if those are present or not. The following xsd shall work: <complexType name="exampleType"> <attribute name="startDate" type="date" use="optional" /> <attribute name="endDate" type="date" use="optional" /> <assert test="(exists(@startDate) = exists(@endDate))"/> </complexType> What I would need is a way check

问题 there is this question and answer: Can I use assert on Android devices? However, then I ran across this: http://tools.android.com/recent/androidstudio045released which says: Some new lint checks, and in particular one which flags uses of the assertion keyword. This does not work reliably on devices and you should use BuildConfig.DEBUG to do conditional checks instead. There is no "assertion" keyword, there is only an "assert" keyword, so I'm not sure what to even make of that release note.

问题 I started to get ClassFormatExceptions I couldn't explain relating to interfaces with static methods. I pruned it down to this test case: public interface ModifierTest { public static final int DELTA = 10; public static int increment(int value) { assert value > 0; // Problem line return value + DELTA; } } public class ModifierExec { public static void main(String[] args) { System.out.println(ModifierTest.class); } } Without the assertion in the increment() method, everything is fine. But with

问题 This question already has answers here : Asking the user for input until they give a valid response (18 answers) Closed 4 years ago . What is the most "correct", Pythonic way to do user input validation in Python? I've been using the following: while True: stuff = input("Please enter foo: ") try: some_test(stuff) print("Thanks.") break except SomeException: print("Invalid input.") Which is nice and readable, I suppose, but I can't help wondering if there isn't some built-in function or

问题 Xcode 4 tells me when an NSAssert has failed, but the assert description and backtrace are no longer logged. I have seen this question: How to make Xcode4 stop at NSAssert failure? which is helpful, but I would rather log the assertion and continue. How can I make NSAssert behave this way? Thanks! 回答1: The question you linked to gets you most of the way there. Add a breakpoint action to the breakpoint you set for the assertion. Select the breakpoint from the breakpoint navigator, right-click,

问题 I'm using Findbugs and javax.annotation.Nonnull on method parameters. On private methods I usually add an assert line to check for nullness like private void myMethod(@Nonnull String str) { assert str != null .... Latest Netbeans version (7.3rc2) is reporting that the assert check is not necessary (because of the Nonnull annotation). I'm not fully sure this is a Netbeans bug or not. Can the assert line be removed because I specified the @Nonnull annotation ? As far as I understand, the

问题 While reviewing Visual C++ codebase I found a following strange thing. A run-time assert (which is check the condition and throw an exception if the condition is violated ) was used in a case when the condition could be evaluated at compile time: assert( sizeof( SomeType ) == sizeof( SomeOtherType ) ); clearly the compiler will evaluate the condition and replace the code that will effectively be either assert( true ); which does nothing or assert( false ); which throws an exception every time