assertthat | User friendly assertions for R

by hadley R Version: v0.2.1 License: No License

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kandi X-RAY | assertthat Summary

assertthat is a R library. assertthat has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

assertthat provides a drop in replacement for stopifnot() that makes it easy to check the pre- and post-conditions of a function, while producing useful error messages. This is a good defensive programming technique, and is useful as source-code documentation: you can see exactly what your function expects when you come back to it in the future. It is partly a response to the lack of static typing in R, but it allows you to test for general conditions (like length(x) == length(y)) that are difficult to express in a type system.

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Support

assertthat has a low active ecosystem.

It has 194 star(s) with 29 fork(s). There are 8 watchers for this library.

It had no major release in the last 12 months.

There are 27 open issues and 21 have been closed. On average issues are closed in 288 days. There are 4 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of assertthat is v0.2.1

Quality

assertthat has no bugs reported.

Security

assertthat has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

assertthat does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

assertthat releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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assertthat Key Features

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Community Discussions

Trending Discussions on assertthat

How do I use a Transaction in a Reactive Flow in Spring Integration?

Unable to scrape table in dynamic multitab website using rvest

Deserialize a JSON string to a class that wrapps a generic class

Comparing two objects with "special" assertions for certain fields with AssertJ

Testing a Spring ControllerMethod using Mockito which alters an entry in the db with Optional.map NullPOinterException

Spring declarative caching test only works if testing direct call to @Cacheable method

How to use assertThat with any condition?

LocalDateTime to milliseconds difference in Java 8 and Java 11

Why non-blocking algorithm does not work correctly

How do I transform the result of R2dbcMessageSource into a new Message derived from the query result?

QUESTION

How do I use a Transaction in a Reactive Flow in Spring Integration?

Asked 2021-Jun-15 at 18:32

I am querying a database for an item using R2DBC and Spring Integration. I want to extend the transaction boundary a bit to include a handler - if the handler fails I want to roll back the database operation. But I'm having difficulty even establishing transactionality explicitly in my integration flow. The flow is defined as

...

ANSWER

Answered 2021-Jun-15 at 18:32

Well, it's indeed not possible that declarative way since we don't have hook for injecting to the reactive type in the middle on that level.

Try to look into a TransactionalOperator and its usage from the Java DSL's fluxTransform():

Source https://stackoverflow.com/questions/67991494

QUESTION

Unable to scrape table in dynamic multitab website using rvest

Asked 2021-Jun-11 at 15:38

my objective

The objective of my code is to scrape the information in the Characteristics tab of the following url, preferably as a data frame

...

ANSWER

Answered 2021-Jun-11 at 15:38

The data is dynamically retrieved from an API call. You can retrieve direct from that url and simplify the json returned to get a dataframe:

Source https://stackoverflow.com/questions/67938126

QUESTION

Deserialize a JSON string to a class that wrapps a generic class

Asked 2021-Jun-10 at 09:21

First some context.

I have this wrapper class:

...

ANSWER

Answered 2021-Jun-10 at 09:21

You have to use

Source https://stackoverflow.com/questions/67840011

QUESTION

Comparing two objects with "special" assertions for certain fields with AssertJ

Asked 2021-Jun-07 at 21:51

Given the following class...

...

ANSWER

Answered 2021-Jun-06 at 07:22

If you want to verify that all the fields have a value you could use hasNoNullFieldsOrProperties, while returns can be used to refine the verification of email (assuming that getters are exposed):

Source https://stackoverflow.com/questions/67854106

QUESTION

Testing a Spring ControllerMethod using Mockito which alters an entry in the db with Optional.map NullPOinterException

Asked 2021-Jun-05 at 15:17

Im currently Testing my Controller methods. In one Method I add a Reisepunkt(travelpoint) to a Reise(travel), which is already saved inside a database.

...

ANSWER

Answered 2021-Jun-05 at 15:17

You forgot to mock ReisepunktRepository and this cause the NullPointerException

Update from

Source https://stackoverflow.com/questions/67850837

QUESTION

Spring declarative caching test only works if testing direct call to @Cacheable method

Asked 2021-Jun-04 at 12:05

I'm trying to test a @Cacheable method using the following code, but is not working, the method is not being cached, if instead of putting the @Cacheable in the getCountCache method I put it in the getCount method the test works, tried a lot of things but couldn't find the cause.

...

ANSWER

Answered 2021-Jun-04 at 12:05

Since Spring cache works on proxy to the bean method annotated with @Cachable called from inside class won't cache. You need to call it directly from outside of the class for caching mechanism to work. Spring cache @Cacheable method ignored when called from within the same class this explanation is really good.

Source https://stackoverflow.com/questions/67836863

QUESTION

How to use assertThat with any condition?

Asked 2021-Jun-02 at 13:44

How can I write the following assertion:

...

ANSWER

Answered 2021-Jun-02 at 13:44

Provided that I'm not familiar with Google Truth (hence I don't know if there's an idiomatic way to write it), I would write that assertion like this:

Source https://stackoverflow.com/questions/67790917

QUESTION

LocalDateTime to milliseconds difference in Java 8 and Java 11

Asked 2021-Jun-01 at 15:16

I'm currently in the process of upgrading a few projects from Java 8 to Java 11 where one of the unit tests for a converter failed. Basically the problem stems from the equality check failing due to a a date precision which previously passed with JDK 8.

Here's a section sample of the test, I've moved the contents of the converter for clarity:

...

ANSWER

Answered 2021-Jun-01 at 15:16

If you take a look at the difference:

Source https://stackoverflow.com/questions/67783580

QUESTION

Why non-blocking algorithm does not work correctly

Asked 2021-May-31 at 07:22

I am writing a thread safe counter. When I test and the threads go first one, then the second everything works correctly. But when threads enter the increment () method at the same time, the counter does not work properly. The reason is not clear, I am using atomic integer.

...

ANSWER

Answered 2021-May-31 at 06:16

TL;DR - Make your increment method synchronized.

Details - Even though you have atomic variables that you use, that does not mean that your class is thread safe. It's not safe because there can be (and are) race conditions between the checks and increments for your variables.

Source https://stackoverflow.com/questions/67768471

QUESTION

How do I transform the result of R2dbcMessageSource into a new Message derived from the query result?

Asked 2021-May-28 at 15:03

I am using R2dbcMessageSource to query a table for an item and want to use one of the columns to create a message to send to a message handler.

The result of the query is a Message>, which makes perfect sense. I want to take event.getDetails and create a Message.

Using a DirectChannel and Transformer, I tried something like this

...

ANSWER

Answered 2021-May-28 at 13:41

I would advice to re-think your vision about reactive stream and start avoiding calling that .block() manually.

Looking to your whole flow requirements, it is really better to make that fromR2dbcChannel as a FluxMessageChannel, so your Mono from R2DBC is going to be subscribed and processed smoothly internally by the framework if there is data.

Your @Transformer(inputChannel = "fromR2dbcChannel", outputChannel = "fromTransformer") then could just deal with a plain Event as an input parameter. Then your KinesisMessageHandler is good to deal with whatever you send to its input channel in the palyoad from that event.getDetails().

UPDATE

So, my bad. Independently of the channel for @InboundChannelAdapter, it still going to produce a Mono in the payload of the message. From here the channel type really doesn't matter. |But at the same time you can make that validationChannel as a FluxMessageChannel and then your transformer must be changed to the service activator:

Source https://stackoverflow.com/questions/67728693

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Vulnerabilities

No vulnerabilities reported

Install assertthat

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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