eclemma | : warning : OLD EclEmma repository | Code Editor library
kandi X-RAY | eclemma Summary
kandi X-RAY | eclemma Summary
EclEmma is a free Java code coverage plug-in for [Eclipse] available under the [Eclipse Public License] Check [for downloads, documentation and feedback.
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Top functions reviewed by kandi - BETA
- Creates the coverage control
- Create local handlers
- Draws a bar at the given event with the maximum value
- Creates the actions for the editor
- Creates the contents of this view
- Create the table
- Creates a column
- Create the control
- Create the export options group
- Import a new session
- Initialize the BundleManager
- Cleanup resources
- Launch the launch
- Accepts the remote control
- Attempts to find a nested java element within the given selection
- Creates the dialog area
- Override this to create the dialog s message area
- Executes the event
- Creates the contents of the Coverage Preferences page
- Create the content of the session
- Compare two elements
- Merges all the provided Coverage sessions
- Display active session
- Process the remote control
- Initializes the default preferences
- Creates the filter content
eclemma Key Features
eclemma Examples and Code Snippets
Community Discussions
Trending Discussions on eclemma
QUESTION
In this documentation, it is suggested to use "@{argLine}". What is the difference between "@{argLine}" and "${argLine}" ? Is there a scope difference ?
Is this documented in maven doc ? (can't find it...).
...ANSWER
Answered 2022-Apr-14 at 10:44@{argLine} instead of the usual ${argLine} is called "late property evaluation". This is only supported by the Maven Surefire Plugin.
From the documentation:
How do I use properties set by other plugins in
argLine?Maven does property replacement for
${...}values in pom.xml before any plugin is run. So Surefire would never see the place-holders in its argLine property.Since the Version 2.17 using an alternate syntax for these properties,
@{...}allows late replacement of properties when the plugin is executed, so properties that have been modified by other plugins will be picked up correctly.
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
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:
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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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