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Difference between revisions of "GEF/Contributor Guide"

< GEF
(Creating a Contribution)
(Install e(fx)clipse or adjust Java JRE and Execution Environment Preferences)
(12 intermediate revisions by 3 users not shown)
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== Prepare your IDE ==
 
== Prepare your IDE ==
  
=== Install e(fx)clipse ===
+
=== Install e(fx)clipse or adjust Java JRE and Execution Environment Preferences ===
When developing against GEF4 components that are dependent on JavaFX, e(fx)clipse should be installed. While only the OSGi integration is actually needed, it may come handy to install the overall e(fx)clipse IDE feature, either from [http://download.eclipse.org/efxclipse/updates-released/0.9.0/site http://download.eclipse.org/efxclipse/updates-released/0.9.0/site] or [http://download.eclipse.org/efxclipse/updates-nightly/site http://download.eclipse.org/efxclipse/updates-nightly/site].
+
When developing against those GEF4 components that are dependent on JavaFX, it is recommended to install e(fx)clipse into your Eclipse development environment, and mandatory to include it within your target platform and runtime configuration.
 +
 
 +
That is, at least on Mac OS and Windows platforms, using an Oracle JVM, installing e(fx)clipse into your development environment and in your target platform is sufficient to fulfill all build-time dependencies. While only the OSGi integration is actually needed, it may come handy to install the overall e(fx)clipse IDE feature, either from [http://download.eclipse.org/efxclipse/updates-released/0.9.0/site http://download.eclipse.org/efxclipse/updates-released/0.9.0/site] (for Kepler and Java 7) or [http://download.eclipse.org/efxclipse/updates-nightly/site http://download.eclipse.org/efxclipse/updates-nightly/site] (for Luna and Java 8).
 +
 
 +
If e(fx)clipse is not installed in your Eclipse development environment (while it will still be needed in your target platform and any runtime configuration), or on platforms where e(fx)clipse tool support does not work as expected (we observed that on Ubuntu Linux, it does not seem to work), you will have to adjust your installed JREs to ensure that the JavaFX libraries are included in the JRE definition (Go to "Windows -> Preferences -> Java -> Installed JREs", then select an JRE entry and choose to "Edit..."; on Oracle JDK 7, ensure jfxrt.jar is included; on Oracle JDK 8, ensure that in addition to jfxrt.jar, which should be included by default, jfxswt.jar is included), and that a JRE that includes the JavaFX libraries is used to resolve the Execution Environments of your bundles (Go to "Windows -> Preferences -> Java -> Installed JREs -> Execution Environments", then select a compatible JRE with JavaFX for J2SE-1.7).
 +
 
 +
When launching an Eclipse runtime, the e(fx)clipse <code>org.eclipse.fx.javafx</code> bundle <code>org.eclipse.fx.osgi</code> fragment have to be included in the runtime configuration. Also, <code>-Dosgi.framework.extensions=org.eclipse.fx.osgi</code> has to be added to the ''VM arguments'' in the runtime configuration's ''Arguments'' tab. If you are having problems with the e(fx)clipse runtime resolution you can add <code>-Defxclipse.osgi.hook.debug=true</code> to the ''VM arguments'' to enable debugging output. We noticed that e(fx)clipse does not seem to work correctly when running SWT on GTK 3 on older GTK versions. In this case, you can enforce SWT to use GTK 2 by setting the environment variable <code>SWT_GTK3=0</code> or adding <code>--launcher.GTK_version 2</code> to your eclipse.ini.
  
 
=== Install API Tools Execution Environment Descriptions ===
 
=== Install API Tools Execution Environment Descriptions ===
 
All production code GEF and GEF4 bundles (i.e. excluding doc and test bundles) are configured to have API tooling enabled. The API checks, which are configured on a project-specific basis, include checks for references that do not exist in the specified execution environment. As API tooling requires execution environment descriptions to perform the respective checks, these should be installed (you will see warnings for missing execution environment descriptions otherwise otherwise), as outline under [[Execution_Environments#Installing Execution Environment Descriptions]].
 
All production code GEF and GEF4 bundles (i.e. excluding doc and test bundles) are configured to have API tooling enabled. The API checks, which are configured on a project-specific basis, include checks for references that do not exist in the specified execution environment. As API tooling requires execution environment descriptions to perform the respective checks, these should be installed (you will see warnings for missing execution environment descriptions otherwise otherwise), as outline under [[Execution_Environments#Installing Execution Environment Descriptions]].
 +
 +
=== Install CDO Version Management Tool ===
 +
In addition to the API Tools, for the GEF bundles (currently not for GEF4 as there all API is yet provisional) we make use of the [[CDO/Version_Management_Tool | CDO Version Management Tool]] to ensure service revision increments are performed as needed (the tool will provide indications of which bundle and feature versions to update when performing changes on the service level). Please install it from the [http://download.eclipse.org/modeling/emf/cdo/updates/integration CDO integration update site].
  
 
=== Install Maven Integration (m2e) ===
 
=== Install Maven Integration (m2e) ===
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GEF (proper) uses PDE API tooling to guarantee proper handling of version numbering as well as API compatibility, so without definition of an API baseline you will see compile problems after having checked out the code. API-baselines are provided by the <code>org.eclipse.gef.baseline</code> project. You may define them by going to ''Preferences -> Plug-in Development -> API Baselines'', then choose to select "Add Baseline..." and point to the <code>plugins</code> sub-folder of an API baseline located in the baselines project (note that the dialog browses the file system instead of the workspace, so you will have to point into the respective folder in your local Git repository).
 
GEF (proper) uses PDE API tooling to guarantee proper handling of version numbering as well as API compatibility, so without definition of an API baseline you will see compile problems after having checked out the code. API-baselines are provided by the <code>org.eclipse.gef.baseline</code> project. You may define them by going to ''Preferences -> Plug-in Development -> API Baselines'', then choose to select "Add Baseline..." and point to the <code>plugins</code> sub-folder of an API baseline located in the baselines project (note that the dialog browses the file system instead of the workspace, so you will have to point into the respective folder in your local Git repository).
  
===Adjust Java Compiler Preferences (Discouraged access errors/warnings caused by provisional API)===
+
===Adjust Java and Plug-in Compiler Preferences (Discouraged access errors/warnings caused by provisional API)===
As all GEF4 API is released as being '''provisional''', all GEF4 API packages are released with the ''x-internal'' directive (see [https://bugs.eclipse.org/bugs/show_bug.cgi?id=438900 bug #438900] for details). Dependent on your workspace settings, this may lead to a lot of Java compiler warnings/errors, which result from discouraged API access. You may want to adjust your workspace-wide Java compiler preferences to get rid of them. To do so, go to "Preferences -> Java -> Compiler -> Warnings/Errors", then select the respective severity ("Warning", "Ignore") for the "Deprecated and restricted API -> Discouraged reference (access rule)" entry.
+
As all GEF4 API is currently released as '''provisional''', all GEF4 API package exports are guarded with the ''x-internal'' directive (see [[#Marking stable, provisional, and non-API | Marking stable, provisional, and non-API]] for details). Dependent on your workspace settings, this may lead to a lot of Java compiler warnings/errors, which result from discouraged API access. You may want to adjust your workspace-wide Java and Plug-in compiler preferences to get rid of them.  
 +
* Go to "Preferences -> Java -> Compiler -> Warnings/Errors", then select the respective severity ("Warning", "Ignore") for the "Deprecated and restricted API -> Discouraged reference (access rule)" entry.
 +
* Go to "Preferences -> Plug-in Development -> Compilers", then select the respective severity ("Warning", "Ignore") for the "References ->References to discouraged classes" entry.
  
== Running a headless build locally ==
+
== Coding conventions ==  
  
 +
=== Marking stable, provisional, and non-API ===
 +
 +
According to the Eclipse [https://wiki.eclipse.org/Provisional_API_Guidelines Provisional API Guidelines] and the [https://wiki.eclipse.org/index.php/Naming_Conventions Naming Conventions], the following conventions are followed to differentiate between stable, provisional, and non-API (see also [https://bugs.eclipse.org/bugs/show_bug.cgi?id=438900 bug #438900]):
 +
 +
* Stable API: All stable API packages do not contain 'internal' in their package names and are exposed via 'Export-Package' in the plug-in MANIFEST.MF, unguarded by 'x-friends' or 'x-internal' directives.
 +
* Provisional API: All provisional API packages do not contain 'internal' in their package names and are exposed via 'Export-Package' in the plug-in MANIFEST.MF, guarded by an 'x-internal' directive.
 +
* Non-API: All non-API packages contain 'internal' in their package names , e.g. <code>org.eclipse.gef4.internal.geometry.utils</code>. These packages should only be exposed via 'Expose-Package' in the plug-in MANIFEST.MF, if this is guarded by an 'x-friends' directive.
 +
 +
Please note that for the Mars release, all of the GEF4 API will still be provisional (i.e. all API packages are provisional API packages). This will cause a lot of warnings/errors in your workspace, unless you follow the guidance given [[#Adjust Java and Plug-in Compiler Preferences (Discouraged access errors/warnings caused by provisional API)| Adjust Java and Plug-in Compiler Preferences]].
 +
 +
== Running a headless build locally ==
 
GEF (as well as [[GEF/GEF4 | GEF4]]) uses a Maven/Tycho-based build infrastructure. With the [http://eclipse.org/m2e/ Maven Integration] installed, the headless build that is executed by the [https://hudson.eclipse.org/hudson/job/gef-master/ gef-master] and [https://hudson.eclipse.org/hudson/job/gef4-master/ gef4-master] Hudson build jobs can also be executed in the local workspace. Make sure you have checked out all projects of a respective git repository (GEF and GEF4 are independent). Then easily run the build by right-clicking the <code>pom.xml</code> file located within the <code>org.eclipse.gef.releng</code> or <code>org.eclipse.gef4.releng</code> project respectively, and selecting 'Run As -> Maven install'. As a result of the build, an update-site will be created in the <code>target</code> sub-folder of the <code>org.eclipse.gef.repository</code> respectively <code>org.eclipse.gef4.repository</code> project. Please note that you need to have a JDK installed (and used by Tycho) rather than a JRE, because the Tycho builds rely on the availability of a javadoc executable for the generation of API documentation in the doc bundles.
 
GEF (as well as [[GEF/GEF4 | GEF4]]) uses a Maven/Tycho-based build infrastructure. With the [http://eclipse.org/m2e/ Maven Integration] installed, the headless build that is executed by the [https://hudson.eclipse.org/hudson/job/gef-master/ gef-master] and [https://hudson.eclipse.org/hudson/job/gef4-master/ gef4-master] Hudson build jobs can also be executed in the local workspace. Make sure you have checked out all projects of a respective git repository (GEF and GEF4 are independent). Then easily run the build by right-clicking the <code>pom.xml</code> file located within the <code>org.eclipse.gef.releng</code> or <code>org.eclipse.gef4.releng</code> project respectively, and selecting 'Run As -> Maven install'. As a result of the build, an update-site will be created in the <code>target</code> sub-folder of the <code>org.eclipse.gef.repository</code> respectively <code>org.eclipse.gef4.repository</code> project. Please note that you need to have a JDK installed (and used by Tycho) rather than a JRE, because the Tycho builds rely on the availability of a javadoc executable for the generation of API documentation in the doc bundles.
  
 
== Creating a Contribution  ==
 
== Creating a Contribution  ==
 
 
You can contribute to GEF either by producing a patch, or via GitHub. In either case, your contribution should be related to a corresponding Bugzilla entry (you can search for [http://bugs.eclipse.org/bugs/buglist.cgi?query_format=advanced;product=GEF existing bugs], or [https://bugs.eclipse.org/bugs/enter_bug.cgi?product=GEF file a new one]).  
 
You can contribute to GEF either by producing a patch, or via GitHub. In either case, your contribution should be related to a corresponding Bugzilla entry (you can search for [http://bugs.eclipse.org/bugs/buglist.cgi?query_format=advanced;product=GEF existing bugs], or [https://bugs.eclipse.org/bugs/enter_bug.cgi?product=GEF file a new one]).  
  
Line 57: Line 78:
  
 
===Produce a Patch===
 
===Produce a Patch===
 
 
To contribute a patch, create a branch in your local Git repository for working on your changes, e.g. a fix for {{bug|321775}}:
 
To contribute a patch, create a branch in your local Git repository for working on your changes, e.g. a fix for {{bug|321775}}:
  
Line 69: Line 89:
  
 
===Fork via GitHub===
 
===Fork via GitHub===
 
 
To contribute via GitHub, fork the GitHub repository you'd like to contribute to from [https://github.com/eclipse https://github.com/eclipse] (i.e. the [https://github.com/eclipse/gef GEF] or [https://github.com/eclipse/gef4 GEF4]. Commit, test, and push your contribution to your fork. When you're done, add a link to the Github commit you want to contribute to a comment in the corresponding bugzilla entry, e.g.:
 
To contribute via GitHub, fork the GitHub repository you'd like to contribute to from [https://github.com/eclipse https://github.com/eclipse] (i.e. the [https://github.com/eclipse/gef GEF] or [https://github.com/eclipse/gef4 GEF4]. Commit, test, and push your contribution to your fork. When you're done, add a link to the Github commit you want to contribute to a comment in the corresponding bugzilla entry, e.g.:
  

Revision as of 06:58, 30 September 2014

Prepare your IDE

Install e(fx)clipse or adjust Java JRE and Execution Environment Preferences

When developing against those GEF4 components that are dependent on JavaFX, it is recommended to install e(fx)clipse into your Eclipse development environment, and mandatory to include it within your target platform and runtime configuration.

That is, at least on Mac OS and Windows platforms, using an Oracle JVM, installing e(fx)clipse into your development environment and in your target platform is sufficient to fulfill all build-time dependencies. While only the OSGi integration is actually needed, it may come handy to install the overall e(fx)clipse IDE feature, either from http://download.eclipse.org/efxclipse/updates-released/0.9.0/site (for Kepler and Java 7) or http://download.eclipse.org/efxclipse/updates-nightly/site (for Luna and Java 8).

If e(fx)clipse is not installed in your Eclipse development environment (while it will still be needed in your target platform and any runtime configuration), or on platforms where e(fx)clipse tool support does not work as expected (we observed that on Ubuntu Linux, it does not seem to work), you will have to adjust your installed JREs to ensure that the JavaFX libraries are included in the JRE definition (Go to "Windows -> Preferences -> Java -> Installed JREs", then select an JRE entry and choose to "Edit..."; on Oracle JDK 7, ensure jfxrt.jar is included; on Oracle JDK 8, ensure that in addition to jfxrt.jar, which should be included by default, jfxswt.jar is included), and that a JRE that includes the JavaFX libraries is used to resolve the Execution Environments of your bundles (Go to "Windows -> Preferences -> Java -> Installed JREs -> Execution Environments", then select a compatible JRE with JavaFX for J2SE-1.7).

When launching an Eclipse runtime, the e(fx)clipse org.eclipse.fx.javafx bundle org.eclipse.fx.osgi fragment have to be included in the runtime configuration. Also, -Dosgi.framework.extensions=org.eclipse.fx.osgi has to be added to the VM arguments in the runtime configuration's Arguments tab. If you are having problems with the e(fx)clipse runtime resolution you can add -Defxclipse.osgi.hook.debug=true to the VM arguments to enable debugging output. We noticed that e(fx)clipse does not seem to work correctly when running SWT on GTK 3 on older GTK versions. In this case, you can enforce SWT to use GTK 2 by setting the environment variable SWT_GTK3=0 or adding --launcher.GTK_version 2 to your eclipse.ini.

Install API Tools Execution Environment Descriptions

All production code GEF and GEF4 bundles (i.e. excluding doc and test bundles) are configured to have API tooling enabled. The API checks, which are configured on a project-specific basis, include checks for references that do not exist in the specified execution environment. As API tooling requires execution environment descriptions to perform the respective checks, these should be installed (you will see warnings for missing execution environment descriptions otherwise otherwise), as outline under Execution_Environments#Installing Execution Environment Descriptions.

Install CDO Version Management Tool

In addition to the API Tools, for the GEF bundles (currently not for GEF4 as there all API is yet provisional) we make use of the CDO Version Management Tool to ensure service revision increments are performed as needed (the tool will provide indications of which bundle and feature versions to update when performing changes on the service level). Please install it from the CDO integration update site.

Install Maven Integration (m2e)

In case you want to run a headless build locally in your workspace, you should install the Maven Integration (m2e), as GEF and GEF4 builds are based on Maven/Tycho.

Obtaining Source Code

The complete source code of the GEF project (with the exception of the web-site) is hosted at http://git.eclipse.org:

Check out the code (Committers and Contributors) using EGit

To check out the code within your local workspace, perform the following steps:

  1. Copy the URI of the repository you want to clone (following the links provided above, the URIs are listed under the Clone section). Note that committers will have to use the ssh protocol URI, whereas consumers and contributors are encouraged to use the git protocol URI.
  2. Clone the Git repository
    1. Open the Git Repository Exploring Perspective (provided by EGit) within Eclipse, and from the toolbar of the Git Repositories Browser view select to Clone a Git Repository and add the clone to this view.
    2. If the repository URL was copied to clipboard before, the upcoming Clone Git Repository dialog should already provide the necessary entries for URI, Host, and Repository path, so you may simple forward by pressing Next >.
    3. Select the branches you want to clone from remote. The master branch is the one used for the current development stream. Development in maintenance releases is performed in respective maintenance branches. After having selected all branches of interest, press Next > to continue.
    4. Choose a local directory to store the cloned repository (the default will be located under your home directory) and select the Initial branch to check out.
  3. Checkout the projects
    1. Right-click the Working directory entry, located under the org.eclipse.gef (resp. org.eclipse.gef4) repository within the Git Repositories Browser view and from the context menu select to Import Projects....
    2. In the upcoming Import Projects from Git Repository dialog, select to Import existing projects and press Next >.
    3. Choose the projects you want to import (by default all are selected) and press Finish to conclude.

Setting up the workspace

Set up the Target Platform

A target definition file is provided by the org.eclipse.gef.target (as well as the org.eclipse.gef4.target) project. To specify the target platform, simply open the respective target definition (e.g. JUNO_4_2.target) within the Target Editor, let is fully resolve (i.e. wait until the Resolving Target Definition background task has finished and the installable units are listed under the respective Locations), then choose to "Set as Target Platform).

Set up API Tooling

GEF (proper) uses PDE API tooling to guarantee proper handling of version numbering as well as API compatibility, so without definition of an API baseline you will see compile problems after having checked out the code. API-baselines are provided by the org.eclipse.gef.baseline project. You may define them by going to Preferences -> Plug-in Development -> API Baselines, then choose to select "Add Baseline..." and point to the plugins sub-folder of an API baseline located in the baselines project (note that the dialog browses the file system instead of the workspace, so you will have to point into the respective folder in your local Git repository).

Adjust Java and Plug-in Compiler Preferences (Discouraged access errors/warnings caused by provisional API)

As all GEF4 API is currently released as provisional, all GEF4 API package exports are guarded with the x-internal directive (see Marking stable, provisional, and non-API for details). Dependent on your workspace settings, this may lead to a lot of Java compiler warnings/errors, which result from discouraged API access. You may want to adjust your workspace-wide Java and Plug-in compiler preferences to get rid of them.

  • Go to "Preferences -> Java -> Compiler -> Warnings/Errors", then select the respective severity ("Warning", "Ignore") for the "Deprecated and restricted API -> Discouraged reference (access rule)" entry.
  • Go to "Preferences -> Plug-in Development -> Compilers", then select the respective severity ("Warning", "Ignore") for the "References ->References to discouraged classes" entry.

Coding conventions

Marking stable, provisional, and non-API

According to the Eclipse Provisional API Guidelines and the Naming Conventions, the following conventions are followed to differentiate between stable, provisional, and non-API (see also bug #438900):

  • Stable API: All stable API packages do not contain 'internal' in their package names and are exposed via 'Export-Package' in the plug-in MANIFEST.MF, unguarded by 'x-friends' or 'x-internal' directives.
  • Provisional API: All provisional API packages do not contain 'internal' in their package names and are exposed via 'Export-Package' in the plug-in MANIFEST.MF, guarded by an 'x-internal' directive.
  • Non-API: All non-API packages contain 'internal' in their package names , e.g. org.eclipse.gef4.internal.geometry.utils. These packages should only be exposed via 'Expose-Package' in the plug-in MANIFEST.MF, if this is guarded by an 'x-friends' directive.

Please note that for the Mars release, all of the GEF4 API will still be provisional (i.e. all API packages are provisional API packages). This will cause a lot of warnings/errors in your workspace, unless you follow the guidance given Adjust Java and Plug-in Compiler Preferences.

Running a headless build locally

GEF (as well as GEF4) uses a Maven/Tycho-based build infrastructure. With the Maven Integration installed, the headless build that is executed by the gef-master and gef4-master Hudson build jobs can also be executed in the local workspace. Make sure you have checked out all projects of a respective git repository (GEF and GEF4 are independent). Then easily run the build by right-clicking the pom.xml file located within the org.eclipse.gef.releng or org.eclipse.gef4.releng project respectively, and selecting 'Run As -> Maven install'. As a result of the build, an update-site will be created in the target sub-folder of the org.eclipse.gef.repository respectively org.eclipse.gef4.repository project. Please note that you need to have a JDK installed (and used by Tycho) rather than a JRE, because the Tycho builds rely on the availability of a javadoc executable for the generation of API documentation in the doc bundles.

Creating a Contribution

You can contribute to GEF either by producing a patch, or via GitHub. In either case, your contribution should be related to a corresponding Bugzilla entry (you can search for existing bugs, or file a new one).

We can easily consume your contribution (compare Eclipse Legal Process), if:

  • you have signed the Eclipse Contributor License Agreement (see Eclipse Foundation Contributor License Agreement), and
  • you have stated (in the corresponding Bugzilla entry) that the contribution was developed from scratch, without incorporating content from elsewhere, and that you are authorized to contribute it under the EPL.

If your contribution does not exceed the contribution limit (currently 1000 LOC) this will allow us to simply consume it. If your contribution was not developed from scratch or contains content from other authors, please indicate this on the related Bugzilla entry. As in cases where the contribution exceeds the limit, we will have to open a contribution questionnaire (and may have to ask for additional information via the related Bugzilla) to handle such cases (see Eclipse Legal Process).

Produce a Patch

To contribute a patch, create a branch in your local Git repository for working on your changes, e.g. a fix for bug 321775:

git checkout -b fix-321775

Test, fix, and commit until you're done. Run the Maven build to make sure everything works. Then create a patch including all commits on your branch against master, like this:

git format-patch master --stdout > fix-321775.patch

Finally, attach your patch to the corresponding bug, in this case bug 321775.

Fork via GitHub

To contribute via GitHub, fork the GitHub repository you'd like to contribute to from https://github.com/eclipse (i.e. the GEF or GEF4. Commit, test, and push your contribution to your fork. When you're done, add a link to the Github commit you want to contribute to a comment in the corresponding bugzilla entry, e.g.:

 https://github.com/ujhelyiz/zest/commit/c1a69026477f0852727a2132233e9e61c14b4d8d

For details, see Development_Resources/Handling_Git_Contributions.

Commiting code

Comments

When committing code, the following format should be used:

 '[' ( <bug-id> | 'NONE' ) ']' <one-line-summary-or-single-line-commit-message> (  '(' 'CQ' <cq-number> ')' )?
 
 ( <wrapped-detailed-commit-message> )?

Examples:

 [355997] Add support for calculating bezier curve intersections. (CQ 5976)
 [NONE] Update target definition to Eclipse SDK 4.2.0.I20120222-0915.

Furthermore, the following constraints should be regarded:

  • The bug id of the bug, which is used to track the changes should always be provided, or NONE to indicate that the changes are made without any directly related bug.
  • The commit message should be specified using present tense, declaring why the changes were made.
  • If a commit message is longer than one short line, it should be formatted to have a short, one-line summary, a blank line, and a wrapped longer description (see [1].
  • If the committer is not the contributor of the changes, the Git author field should be used to specify the full name of the contributor (see Development_Resources/Handling_Git_Contributions). In case the changes were approved by means of a contribution questionnaire, the CQ number should be specified in round brackets after the one line summary.

Handling Bugs

When working with bugzillas, the following guidelines should be regarded.

Classifying Bugs

For GEF4, components are pretty fine-grained, so selection of a bugzilla component is usually sufficient to identify the part of the API that is concerned. For Draw2d/GEF (MVC) 3.x this may not be sufficient. We thus use categories for this issue, which will be stated as a [<category_name>] prefix within the bugzilla's summary. The list of currently used categories is:

  • General
    • [TVT] - Translation Verification Tests
  • Draw2d
    • [GraphLayout]
    • [Geometry]
    • [Text]
  • GEF
    • [Command]
    • [DnD]
    • [EditPart]
    • [EditPolicy]
    • [Palette]
    • [Print]
    • [Tool]

Resolving Policy

When resolving bugzillas, it should be stated how the bug is verified. Preferably this is a JUnit test. Alternatively, the bugzilla will say that the defect can be reproduced in the Logic example and you can demonstrate the fix working in the logic example (or other examples using GEF). If the bug is trivial or obvious and does not require a test, we can just state this in the Bugzilla too.

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