eclemma | : waning_crescent_moon : Java Code Coverage for Eclipse IDE | Code Editor library
kandi X-RAY | eclemma Summary
kandi X-RAY | eclemma Summary
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Top functions reviewed by kandi - BETA
- Create the coverage view
- Create the local handlers
- Draws the event at the specified column with the maximum number of events
- Create the actions
- Creates the controls for this CoveragePropertySession
- Create the table
- Create column
- Create the control
- Create the export options group
- Import a single session
- Initialize the BundleManager
- Launch a launch
- Accept the remote control
- Cleanup resources
- Creates the dialog s buttons
- Try to locate a nested java element within the given selection
- Override this to customize Merge Sessions
- Create the filter content
- Initializes the default preferences
- Runs the remote server
- Display active session
- Export an event
- Merges all the given sessions
- Compares two coverage view
- Create the content for the execution data editor
- Create the overview
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Community Discussions
Trending Discussions on eclemma
QUESTION
I recently had this very annoying problem come out of nowhere. Running my unit tests with EclEmma coverage enabled causes the following dialog window to pop up from Eclipse:
For the search engines, it reads:
No coverage data has been collected during this coverage Session.
Please do not terminate the Java process manually from Eclipse.
No coverage information is provided for any of the classes in my project. Needless to say I am not terminating the Java process manually. To try and fix it I: reimported my project, upgraded Java, reinstalled Emma, restarted my Macbook Pro, made sure that temp filesystem space looked good, and 20 other things I'm forgetting right now.
I finally noticed that it was only a couple of my open source projects generating this error and decided to whittle down one of my tests. Here's the minimum test that reproduces the problem.
Test class I'm trying to get coverage on:
...ANSWER
Answered 2021-Jan-07 at 02:00EMMA is not used here, even if the name EclEmma might imply it. In fact, EclEmma started in 2006 as an Eclipse integration of EMMA. But more than 9 years ago, since EclEmma 2.0, EMMA has been replaced by JaCoCo, a free code coverage library for Java created by the EclEmma team.
Since a code change in the application and/or in the test makes the problem go away, it is very unlikely that the coverage data is collected but not displayed. Therefore, the only likely remaining reason is that something is interfering with JaCoCo collecting the data. The FAQ of JaCoCo names what that might be:
Why does a class show as not covered although it has been executed?
First make sure execution data has been collected. For this select the Sessions link on the top right corner of the HTML report and check whether the class in question is listed. If it is listed but not linked the class at execution time is a different class file. Make sure you're using the exact same class file at runtime as for report generation. Note that some tools (e.g. EJB containers, mocking frameworks) might modify your class files at runtime. Please see the chapter about class ids for a detailed discussion.
To make sure it's not a caching problem, try if also a minor code change makes the problem go away as well.
The things you list that make the problem go away are very different, but all might affect the timing, which would indicate a concurrency issue. You might try to change the order of the tests and/or add Thread.sleep()
at some places to see if that changes anything.
However, in your case the root cause is unclear without having minimal reproducible example (that might be difficult to provide, if it is a concurrency issue).
Update:
As Evgeny Mandrikov pointed out, the root problem is indeed a concurrency issue of JUnit 4.13 and 4.13.1 (including all 4.13-beta-* and 4.13-rc-* versions, but previous versions of JUnit are not affected):
JUnit 4 issue #1652: Timeout ThreadGroups should not be destroyed
The issue has already been fixed for the upcoming JUnit 4.13.2 release.
The following can be used as a workaround to prevent the thread group from being destroyed and thus JaCoCo loosing its collected data (by adding a dummy thread into that group):
QUESTION
I have two static methods in the class BrickSortParallel. They are fully covered by unit tests. But I have a static block static {...}
listed with only 75% code coverage by Jacoco. What does that signify?
ANSWER
Answered 2020-Aug-26 at 12:38To quote Marc R Hoffman on Jacoco Github:
"Your code uses the assert keyword which results in a static initializer:
QUESTION
I am writing unit tests for my project and am trying to achieve at least 80% code coverage. Problem is that I am using lombok's @Data
annotation for generating getters and setters and when I run my unit tests, all those getters and setters along with other methods like toString
, equals
, hashcode
etc are missed and my code coverage takes a hit. Is there any workaround for this. I have been searching a lot about this but haven't been able to find anything which could help out. Any help on this would be appreciated.
I am using Eclemma for code coverage analysis.
...ANSWER
Answered 2020-May-29 at 07:47First of all, @Data annotation is the combination of @ToString, @EqualsAndHashCode, @Getter, @Setter.
If you just need Lombok to create getters and setters automatically, you can use only @Getter and @Setter annotations instead of @Data.
Besides, to keep the methods created by Lombok outside of this coverage, you can create a lombok.config file in your root directory and have these two lines:
QUESTION
I recently used EclEmma plugin in eclipse to find code coverage of JUnits in my application and it worked great.
In the next step, I want to be able to find code coverage for end-to-end tests / functional tests which are called on our application from outside(they reside on a separate server).
Basically, we package our application as a jar (we use maven) and deploy it on a server. And we can trigger the functional tests at this location.
Is there a way to find code coverage in this case?
My understanding of how code coverage tool works (in raw language) is that it loads the classes and generates a report based on the part of code that has been hit. So as per this understanding, I don't need to have access to the test-code. I only need to somehow plug the code coverage tool into my application jar and whenever any code in this jar is called, report will be updated. Is my understanding correct?
NOTE: I am open to use other code coverage tool if this is possible with other tools.
...ANSWER
Answered 2018-May-04 at 23:27You can run your code on a server, instrumented at runtime by the JaCoCo agent, by adding the agent to the Java command line. For example if your process is currently launched with:
QUESTION
We use non-java tests. Each one of them executes our tool which is written in Java.
I'm trying to use Eclemma for creating the coverage report of the tests.
Lets start with one test. We compile the code with build.xml
. I would like somehow to create a coverage report for each test and then to merge them into one main report.
I found out that Jacoco has CMD interface I could use in order to merge those reports. But I don't understand how do I run the tool with coverage package?
- Which coverage package should I use? Is it Eclemma or Jacoco?
- How do I run the tool with the coverage package? Should I add it into the build.xml file? Should I add it to the command line?
I'm a bit confused about the whole idea of coverage in Java. In dynamic langues such as Python and Perl, I just execute the code with the coverage module, which creates the coverage report.
The command we use to execute out tool:
...ANSWER
Answered 2020-Mar-12 at 13:17As I know, the only place to add java agent is in the configuration of the unit tests.
Agent should be added to the JVM that executes application under test. Your confusion probably comes from the fact that usually unit tests are executed in the same JVM as code under test.
From your description unclear how JVM with the application is started.
However consider following src/Main.java
as an example:
QUESTION
I have a maven project with jacoco plugin, which generates reports in different formats, such as html, csv and xml. But I need only html. How can I specify it?
Here is some code, where I add jacoco plugin:
...ANSWER
Answered 2018-Oct-02 at 20:17As of today report
goal of jacoco-maven-plugin
unconditionally generates XML, HTML and CSV - see https://github.com/jacoco/jacoco/issues/9
And in my opinion there is no reasons to disable HTML and XML - cost of generation is small, developers can view HTML in place, while XML consumed by other tools such as SonarQube or Jenkins.
As a workaround if highly needed, report
task of JaCoCo Ant Tasks
can be executed via maven-antrun-plugin
.
QUESTION
I am trying to establish a process of collecting QA tests coverage and aggregating this information into a single report. We have a big team and code changes very frequently, so my main problem was related to impossibility to collect coverage from the single app version. According to the documentation Jococo should warn about all classes where execution data does not match and report them as not covered.
...ANSWER
Answered 2019-Jul-18 at 13:49Just decided to visualize previous answer for better perception (percentage numbers are made up and serve illustration purposes).
QUESTION
We are using Jacoco
and eclemma
for test case coverage. For the classes that are not using PowerMockRunner we are getting coverage properly in both.For the classes that uses PowerMockRunner we are facing issue with coverage like it shows 0 % coverage in jacoco but shows proper coverage in eclemma.
ANSWER
Answered 2017-Oct-16 at 12:55PowerMock does not work with Jacoco
Jacoco and powermock don't work well , so in order to get coverage we can use offline version of jacoco.
I had put together an example
QUESTION
I tried to understand Junit and eclEmma by writing a unit test for Stack methods, push(), pop() and peak(). But all of them failed. It seems that none of them got covered. I thought initially it was a syntactical issue with my codes in how to push an integer object onto the stack but it seems that it is not the issue.
...ANSWER
Answered 2019-Mar-19 at 13:33You are mixin to JUnit API in your tests, JUnit4 and JUnit5. So, if you want to use the latest one (JUnit 5 which I recommend you), you should import everything from the JUnit5 package: org.junit.jupiter.
So, your test cases would look like this (notice I also did some other changes):
QUESTION
I am new to Maven and am struggling to find the right way to ask this question (since I doubt the problem is specific to DynamoDBLocal).
I am attempting to start a REST server using Jersey with Grizzly servlet, but mvn exec:java
is failing because I can't figure out how to specify mainClass. For my unit tests, I'm using in-memory DynamoDBLocal to mock the database. I am also hoping in the short term to use DynamoDBLocal as the actual database while running the REST server (just during proof-of-concept stages) just to not spend money on AWS until I'm ready to serve some traffic.
When running mvn exec:java
, I get the following failure:
ANSWER
Answered 2019-Mar-18 at 13:14@Fridge honestly not sure coz I'm still pretty new around here, but I'll leave this here anyways :)
Take a look at: run main class of Maven project
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Install eclemma
You can use eclemma like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the eclemma component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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