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Java Interfaces/Implementation naming convention [duplicate]
...h coworker or even to create a dummy or fake implementation for your JUnit test.
– amdev
Oct 24 '18 at 13:57
...
Python: Checking if a 'Dictionary' is empty doesn't seem to work
...er using the first way only though. The other two ways are way too wordy.
test_dict = {}
if not test_dict:
print "Dict is Empty"
if not bool(test_dict):
print "Dict is Empty"
if len(test_dict) == 0:
print "Dict is Empty"
...
JavaScript null check
...ecial singleton object which is helpful for signaling "no value". You can test for it by comparison and, as usual in JavaScript, it's a good practice to use the === operator to avoid confusing type coercion:
var a = null;
alert(a === null); // true
As @rynah mentions, "undefined" is a bit confus...
Pandas - Get first row value of a given column
...
To select the ith row, use iloc:
In [31]: df_test.iloc[0]
Out[31]:
ATime 1.2
X 2.0
Y 15.0
Z 2.0
Btime 1.2
C 12.0
D 25.0
E 12.0
Name: 0, dtype: float64
To select the ith value in the Btime column you could use:
In [...
Compare equality between two objects in NUnit
...
Override .Equals for your object and in the unit test you can then simply do this:
Assert.AreEqual(LeftObject, RightObject);
Of course, this might mean you just move all the individual comparisons to the .Equals method, but it would allow you to reuse that implementation...
Test parameterization in xUnit.net similar to NUnit
...
xUnit offers a way to run parameterized tests through something called data theories. The concept is equivalent to the one found in NUnit but the functionality you get out of the box is not as complete.
Here's an example:
[Theory]
[InlineData("Foo")]
[InlineData(...
How to execute ipdb.set_trace() at will while running pytest tests
I'm using pytest for my test suite. While catching bugs in complex inter-components test, I would like to place import ipdb; ipdb.set_trace() in the middle of my code to allow me to debug it.
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Java String - See if a string contains only numbers and not letters
...ther solutions, because at least require exception handling.
I've run jmh tests and have found that iterating over String using charAt and comparing chars with boundary chars is the fastest way to test if string contains only digits.
JMH testing
Tests compare performance of Character.isDigit vs P...
jasmine: Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL
...s function is complete. If you never call it, Jasmine will never know your test is done and will eventually timeout.
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What actually causes a Stack Overflow error? [duplicate]
...ns a smaller depth before the memory allocated for the stack is exhausted. Test it with a method calling itself with 1 argument, then with 5 for example.
– JB Nizet
Mar 4 '14 at 22:07
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