assert Questions
20
Solved
This is what I normally do in order to ascertain that the input is a list/tuple - but not a str. Because many times I stumbled upon bugs where a function passes a str object by mistake, and the tar...
4
Solved
I have a page that I know contains a certain text at a certain xpath. In firefox I use the following code to assert that the text is present:
assertEquals("specific text", driver.findElement(By.xp...
10
Solved
Let's say that I have a class Suit and four subclasses of suit: Heart, Spade, Diamond, Club.
class Suit:
...
class Heart(Suit):
...
class Spade(Suit):
...
class Diamond(Suit):
...
class Club(S...
3
Solved
A methodological question:
I'm implementing an API interface to some services, using node.js, mongodb and express.js.
On many (almost all) sites I see code like this:
method(function(err, data) ...
Trapeze asked 12/10, 2015 at 14:2
6
Solved
What am I doing wrong that an exception is thrown instead of showing a failure, or should I not have assertions inside threads?
@Test
public void testComplex() throws InterruptedException {
int...
3
Solved
I'm trying to find a better way to assert the column data type in Python/Pandas of a given dataframe.
For example:
import pandas as pd
t = pd.DataFrame({'a':[1,2,3], 'b':[2,6,0.75], 'c':['foo','b...
35
Solved
How can I use JUnit idiomatically to test that some code throws an exception?
While I can certainly do something like this:
@Test
public void testFooThrowsIndexOutOfBoundsException() {
boolean th...
4
Solved
You can enable/disable assert on the ClassLoader.
But how can you determine if they are already enabled?
(I want to take some code paths that perform expensive checks only if the JVM is invoked w...
4
Solved
I've got functions, which sometimes return NaNs with float('nan') (I'm not using numpy).
How do I write a test for it, since
assertEqual(nan_value, float('nan'))
is just like float('nan') == fl...
Jamarjamb asked 3/6, 2013 at 6:13
9
Solved
Could you give an example where static_assert(...) ('C++11') would solve the problem in hand elegantly?
I am familiar with run-time assert(...). When should I prefer static_assert(...) over regula...
Woolsey asked 30/10, 2009 at 3:35
8
Solved
After years of using the big ugly MFC ASSERT macro, I have finally decided to ditch it and create the ultimate ASSERT macro.
I am fine with getting the file and line number, and even the expressio...
31
Solved
I am working on Linux with the GCC compiler. When my C++ program crashes I would like it to automatically generate a stacktrace.
My program is being run by many different users and it also runs on...
Exegete asked 16/9, 2008 at 20:58
6
Solved
Here are four simple invocations of assert:
>>> assert 1==2
Traceback (most recent call last):
File "<stdin>", line 1, in ?
AssertionError
>>> assert 1==2, "hi"
Traceback...
Gandhi asked 24/6, 2010 at 16:59
12
Solved
Is there a nicer way to write in jUnit
String x = "foo bar";
Assert.assertTrue(x.contains("foo"));
9
Why do so many assertEquals() or similar functions take the expected value as the first parameter and the actual one as second?
This seems counterintuitive to me, so is there a particular reason fo...
3
Solved
Suppose I have a class in python set up like this.
from somewhere import sendmail
class MyClass:
def __init__(self, **kargs):
self.sendmail = kwargs.get("sendmail", sendmail) #if we can't find...
9
Solved
Currently, I write
assert(false);
at places that my code is never supposed to reach. One example, in a very C-ish style, is:
int findzero( int length, int * array ) {
for( int i = 0; i < l...
6
Solved
a statement that checks if something is true and if not prints a given error message and exits
Palish asked 10/2, 2010 at 0:34
23
Solved
What does assert mean? How is it used?
5
Solved
This assert is passing Symfony's form validation when uploading any file with VichUploaderBundle:
/**
* @Vich\UploadableField(mapping="product_media", fileNameProperty="path")
* @Assert\File(
*...
Comte asked 1/12, 2015 at 11:33
2
Solved
I'm developing for Unity3D using C#, and decided it would be useful to have an assert function. (In Unity3D, System.Diagnostics.Debug.Assert exists, but does nothing.)
As a developer that works pr...
Scent asked 28/2, 2013 at 22:58
2
Solved
I'm writing unittest for a method that returns a dataframe, but, while testing the output using:
self.asserEquals(mock_df, result)
I'm getting ValueError:
ValueError: The truth value of a DataFrame...
Cohin asked 12/10, 2021 at 5:9
2
Solved
By default, Java disables assertions. (The test I'm using here is assert false; as the first line in main().)
I'd like to have them enabled while running my program with gradle run. What's the tr...
25
Solved
How do I use Assert (or other Test class) to verify that an exception has been thrown when using MSTest/Microsoft.VisualStudio.TestTools.UnitTesting?
Bartel asked 1/6, 2009 at 5:1
12
Solved
I'm using Selenium WebDriver, how can I check if some text exist or not in the page? Maybe someone recommend me useful resources where I can read about it. Thanks
Poteat asked 12/7, 2012 at 15:4
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