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Postgres: “ERROR: cached plan must not change result type”
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I got the same problem on Postgres 10 while running JUnit tests for spring+jpa application. Exception message: org.postgresql.util.PSQLException: ERROR: cached plan must not change result type. And all tests work like a charm, but only Repository.findById(). I don't change the schem...
Is there any publicly accessible JSON data source to test with real world data? [closed]
...ing on a JavaScript dynamically loaded tree view user control. I'd like to test it with real world data.
5 Answers
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Purge or recreate a Ruby on Rails database
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You'll also need to run rake db:test:prepare for testing, or else you'll get an error like: Could not find table 'things' (ActiveRecord::StatementInvalid)
– s2t2
Feb 17 '13 at 1:49
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How to verify that a specific method was not called using Mockito?
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As a more general pattern to follow, I tend to use an @After block in the test:
@After
public void after() {
verifyNoMoreInteractions(<your mock1>, <your mock2>...);
}
Then the test is free to verify only what should be called.
Also, I found that I often forgot to check for "no ...
What's the best way of scraping data from a website? [closed]
...unethical anyway, so write a well behaved bot and don't worry about this.
Testing
Not a unit/integration test person? Too bad. You will now have to become one. Sites change frequently and you will be changing your code frequently. This is a large part of the challenge.
There are a lot of moving p...
How expensive is RTTI?
...ique object for each type, even across dynamic linking boundaries. You can test &typeid(a) == &typeid(b), or just rely on the fact that the portable test typeid(a) == typeid(b) does actually just compare a pointer internally.
In GCC's preferred ABI, a class vtable always holds a pointer to ...
Skip callbacks on Factory Girl and Rspec
I'm testing a model with an after create callback that I'd like to run only on some occasions while testing. How can I skip/run callbacks from a factory?
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Running a Python script from PHP
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Tested on Ubuntu Server 10.04. I hope it helps you also on Arch Linux.
In PHP use shell_exec function:
Execute command via shell and return the complete output as a string.
It returns the output from the executed co...
Why 0 is true but false is 1 in the shell?
...convention saying 0 means success, and other values mean some error.
With test, [ ] or [[ ]] operators, bash conditions evaluate as true in case of an exit code of 0 (the result of /bin/true). Otherwise they evaluate as false.
Strings are evaluated differently than exit codes:
if [ 0 ] ; then ech...
Is there a use-case for singletons with database access in PHP?
... allow for multiple databases--no other code changes.
The second issue is testing (And honestly, this is the same as the first issue). Sometimes you want to replace your database with a mock database. In effect this is a second instance of the database object. This is much harder to do with stat...