ginkgo | A Modern Testing Framework for Go | Application Framework library
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QUESTION
I have a golang function which recursively steps through a json string and replaces custom references with the json document they are referencing. I just noticed that I forgot to handle cyclic references, whose occurrence will lead to endless recursion. Before I fix this, I'd like to write a test for this case (using ginkgo/gomega), so I can verify that my solution works and I will notice if I ever break it and run into this problem again.
But how do I do something like if this function call does not return within , abort it and fail the test?
Gomega's Eventually has a timeout, but it doesn't abort the function if it is already running, so it will block forever in this case.
I found this example for how to check for a timeout using select and channels, but from what I understood, it is not possible to terminate a goroutine from outside - so my function will continue to run in the background, eating up resources?
What is the best way to check for infinite recursion?
...ANSWER
Answered 2022-Jan-11 at 13:15You can't abort a running function. The function has to support abortion, idiomatically through a context.Context or a channel. If you want to support timeout or abortion, you have to change / refactor your function. And the function itself has to support this, e.g. it has to monitor the context.Context and return early if cancellation was requested. For details and example, see Terminating function execution if a context is cancelled
See related:
QUESTION
Does anyone know how to change the transparency(or alpha) of the color in the ellipse?
I want to remain only the line of boundary in the plot.
I tried to mimic the code in this site:
http://www.sthda.com/english/wiki/fviz-pca-quick-principal-component-analysis-data-visualization-r-software-and-data-mining
But I could not find the option about the alpha value of the ellipse color.
...ANSWER
Answered 2021-Dec-14 at 02:35You may use ellipse.alpha argument that can find here.
QUESTION
I tried to draw the modified PCA plot representing two types of categories.
For example, I want to draw PCA with 1) PCA ellipse based on Kingdom, 2) PCA sample points colored with Class variable.
Here is the example dataset.
ANSWER
Answered 2021-Nov-01 at 13:42You can specify the frame.colour for the ellipses and the colour for the points:
QUESTION
Using a MacBook Pro, Big Sur OS, I followed the hyperledger fabric documentation, I installed all the required files and tools. However, when I reached to the final step, the code generated a goimports error that I am not able to repair. The Error was the following:
...ANSWER
Answered 2021-Oct-28 at 09:34Two things to try:
- Use Go 1.16 (which is the version currently used to build/run Fabric).
- Use Go installed to /usr/local/go with the official installer rather than installed with Homebrew.
If there really is something wrong with the imports in those files, which there shouldn't be unless they have been modified locally, use the goimports -l -w command for each of the files listed to correct them.
For reference, I am also using a Macbook Pro, running MacOS Monterey but previously with Big Sur, and make basic-checks runs cleanly for me with Go 1.16.9 on the latest main branch code.
QUESTION
package logger
import (
"bytes"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
ctrl "sigs.k8s.io/controller-runtime"
)
var _ = Describe("Logger", func() {
It("Test Default Log Level", func() {
buf := &bytes.Buffer{}
testLog := ctrl.Log.WithName("setup")
SetLogger()
testLog.Info("This is a test")
Expect(buf.String(),"This is a test")
})
})
ANSWER
Answered 2021-Oct-28 at 13:00If you are only interested in testing the log message, you can use a hook.
In particular zap.Hooks function constructs a zap.Option from a variable number of hooks. A hook is just a func(entry zapcore.Entry) error which you can use to intercept the entry and write its message to the buffer.
To set this zap.Option into your sigs.k8s.io logger, you set it to the ZapOpts field:
QUESTION
While trying to setup the dev environment for Hyperledger Fabric 2.2, I am getting this error in the 'make dist-clean all' command execution
...ANSWER
Answered 2021-Sep-29 at 09:32If you check the releases page for fabric https://github.com/hyperledger/fabric/releases it will tell you which version of Go should be used to build that tagged version of fabric. If you are building off of the release branch then you should check the code to see which Go version to use, using any other version can have issues (as you have seen). Currently 2.2.4 and 2.2 use goLang 1.16.7 (at time of writing). If you are looking to contribute moving to newer versions of GoLang then you need to investigate and fix any build breaks as part of that migration
QUESTION
I have a function that is designed to insert a large number of elements into an MSSQL database using a table-valued parameter and a procedure.
...ANSWER
Answered 2020-Nov-25 at 10:15What I discovered here is that sqlmock has a function called ValueConverterOption, which, when provided with a custom driver.ValueConverter interface. This will be called in place of the standard function for every invocation of ConvertValue. If you want to test around the ExecContext function when it receives a non-standard argument, a TVP in this case, then you can use this function to inject custom conversion logic into sqlmock.
QUESTION
I'm writing a "simple" HL7 listener and then using the dcm4che binary utility movescu to make a query and retrieve operation from a remote PACS
I need to retrieve a Study and I have (00080050) AccessionNumber from the HL7 data, then I do the following:
...ANSWER
Answered 2020-Jul-27 at 07:58I do not know the Ginkgo PACS, but quite likely your retrieval fails because your request is malformed.
See PS3.4, C.4.2.1.4.1 Request Identifier Structure
Your request must include the attribute Query Retrieve Level (0008,0052) which I assume will be "STUDY" in your case since the Accession Number is a study-level attribute.
Furthermore it must contain
"Unique Key Attributes, which may include Patient ID (0010,0020), Study Instance UIDs (0020,000D), Series Instance UIDs (0020,000E), and the SOP Instance UIDs (0008,0018)"
That is, you have to specify the scope of your retrieve request by providing unique identifiers for the patient/study/series/image(s) you want to move - and nothing else!
So Accession Number may be used to query (C-FIND) for the corresponding Study Instance UID that you need for the C-MOVE. But it is not allowed in the C-MOVE-Request.
Caution: Whether or not you must include or omit the Patient-ID (0010,0020) in your C-MOVE request depends on the information model that you have negotiated during association establishment and that you select by choosing the presentation context for your message. You must include it in Patient Root, you must not include it in Study Root.
QUESTION
When I run go get -u github.com/onsi/ginkgo/ginkgo
till yesterday I had no issues. Specifically with fsnotify the output was like below
ANSWER
Answered 2020-Mar-12 at 18:09Some module in the transitive dependencies of github.com/onsi/ginkgo/ginkgo added a requirement on some version of gopkg.in/fsnotify.v1, which resolves to the repository hosted at github.com/fsnotify/fsnotify.
However, the go.mod file in that repository declares its canonical import path to be github.com/fsnotify/fsnotify, not gopkg.in/fsnotify.v1.
If you are using Go 1.14, the rest of the error message (which seems to be truncated) should tell you exactly which dependency is using the non-canonical path. The long-term fix is to move that dependency over to the canonical path and upgrade your other dependencies such that gopkg.in/fsnotify.v1 is no longer required.
QUESTION
I'm rewriting unit test of our k8s controller with ginkgo.
As previous TDD, for each test, we will have something like.
...ANSWER
Answered 2020-Apr-03 at 22:31Do you plan to run tests in parallel? If so, then results will be unpredictable. In that case it's recommended to have a separate instance of external resources for each process.
I would recommend to look at how controller tests are implemented in controller-runtime. I believe, they create new Control Plane with envtest each time BeforeSuit function is called. And as ginkgo docs states:
when running in parallel, each parallel process will run BeforeSuite and AfterSuite functions
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