Configuring execution¶
This section explains different command line options that can be used for configuring the test execution or post-processing outputs. Options related to the generated execution artifacts are discussed in the next section.
Selecting files to parse¶
Executing individual files¶
When executing individual files, Robot Framework tries to parse and run them regardless the name or the file extension. What parser to use depends on the extension:
.robotfiles and files that are not recognized are parsed using the normal Robot Framework parser..rstand.restfiles are parsed using the reStructuredText parser..mdand.markdownfiles are parsed using the Markdown parser..rbtand.jsonfiles are parsed using the JSON parser.- Files supported by custom parsers are parsed by a matching parser.
Examples:
Included and excluded files¶
When executing a directory, files and directories are parsed using the following rules:
- All files and directories starting with a dot (
.) or an underscore (_) are ignored. .robotfiles are parsed using the normal Robot Framework parser..robot.rstfiles are parsed using the reStructuredText parser..robot.mdfiles are parsed using the Markdown parser..rbtfiles are parsed using the JSON parser.- Files supported by custom parsers are parsed by a matching parser.
- Other files are ignored unless parsing them has been enabled by using
the
--parseincludeor--extensionoptions discussed in the subsequent sections.
Selecting files by name or path¶
When executing a directory, it is possible to parse only certain files based on
their name or path by using the --parseinclude (-I) option. This option
has slightly different semantics depending on the value it is used with:
-
If the value is just a file name like
example.robot, files matching the name in all directories will be parsed. -
To match only a certain file in a certain directory, files can be given as relative or absolute paths like
path/to/tests.robot. -
If the value is a path to a directory, all files inside that directory are parsed, recursively.
Examples:
Values used with --parseinclude are case-insensitive and support
glob patterns like example_*.robot. There are, however,
two small differences compared to how patterns typically work with Robot Framework:
-
*matches only a single path segment. For example,path/*/tests.robotmatchespath/to/tests.robotbut notpath/to/nested/tests.robot. -
**can be used to enable recursive matching. For example,path/**/tests.robotmatches bothpath/to/tests.robotandpath/to/nested/tests.robot.
If the pattern contains an extension, files with that extension are parsed even if they by default would not be. What parser to use depends on the used extension:
.rstand.restfiles are parsed using the reStructuredText parser..mdand.markdownfiles are parsed using the Markdown parser..jsonfiles are parsed using the JSON parser.- Other files are parsed using the normal Robot Framework parser.
Notice that when you use a pattern like *.robot and there exists a file that
matches the pattern in the execution directory, the shell may resolve
the pattern before Robot Framework is called and the value passed to
it is the file name, not the original pattern. In such cases you need
to quote or escape the pattern like '*.robot' or \*.robot.
Note
--parseinclude is new in Robot Framework 6.1.
Selecting files by extension¶
In addition to using the --parseinclude option discussed in the
previous section, it is also possible to enable parsing files that are not
parsed by default by using the --extension (-F) option.
Matching extensions is case insensitive and the leading dot can be omitted.
If there is a need to parse more than one kind of files, it is possible to
use a colon : to separate extensions:
The above is equivalent to the following --parseinclude usage:
Because the --parseinclude option is more powerful and covers all
same use cases as the --extension option, the latter is likely to be
deprecated in the future. Users are recommended to use --parseinclude
already now.
Using custom parsers¶
External parsers can parse files that Robot Framework does not recognize otherwise. For more information about creating and using such parsers see the Parser interface section.
Selecting test cases¶
Robot Framework offers several command line options for selecting which test cases to execute. The same options work also when executing tasks and when post-processing outputs with Rebot.
By test names¶
The easiest way to select only some tests to be run is using the
--test (-t) option. As the name implies, it can be used for
selecting tests by their names. Given names are case, space and underscore
insensitive and they also support simple patterns. The option can be
used multiple times to match multiple tests:
To pinpoint a test more precisely, it is possible to prefix the test name with a suite name:
Notice that when the given name includes a suite name, it must match the whole suite name starting from the root suite. Using a wildcard as in the last example above allows matching tests with a parent suite anywhere.
Using the --test option is convenient when only a few tests needs
to be selected. A common use case is running just the test that is currently
being worked on. If a bigger number of tests needs to be selected,
it is typically easier to select them by suite names or by tag names.
When executing tasks, it is possible to use the --task option
as an alias for --test.
By suite names¶
Tests can be selected also by suite names with the --suite (-s)
option that selects all tests in matching suites. Similarly
as with --test, given names are case, space and underscore
insensitive and support simple patterns. To pinpoint a suite
more precisely, it is possible to prefix the name with the parent suite
name:
If the name contains a parent suite name, it must match the whole suite name
the same way as with --test. Using a wildcard as in the last example
above allows matching suites with a parent suite anywhere.
Note
Prior to Robot Framework 7.0, --suite with a parent suite
did not need to match the whole suite name. For example, parent.child
would match suite child with parent parent anywhere. The name must
be prefixed with a wildcard if this behavior is desired nowadays.
If both --suite and --test options are used, only the
specified tests in specified suites are selected:
Using the --suite option is more or less the same as executing
the appropriate suite file or directory directly. The main difference is
that if a file or directory is run directly, possible higher level
suite initialization files are ignored:
Prior to Robot Framework 6.1, files not matching the --suite option
were not parsed at all for performance reasons. This optimization was not
possible anymore after suites got a new Name setting that can override
the default suite name that is got from the file or directory name. New
--parseinclude option has been added to explicitly select which
files are parsed if this kind of parsing optimization is needed.
By tag names¶
It is possible to include and exclude test cases by tag names with the
--include (-i) and --exclude (-e) options, respectively.
If the --include option is used, only test cases having a matching
tag are selected, and with the --exclude option test cases having a
matching tag are not. If both are used, only tests with a tag
matching the former option, and not with a tag matching the latter,
are selected:
Both --include and --exclude can be used several
times to match multiple tags. In that case a test is selected
if it has a tag that matches any included tags, and also has no tag
that matches any excluded tags.
In addition to specifying a tag to match fully, it is possible to use
tag patterns where * and ? are wildcards and
AND, OR, and NOT operators can be used for
combining individual tags or patterns together:
Another way to exclude tests by tags is using the robot:exclude reserved tag.
This tag can also be set using a variable, which allows excluding test
dynamically during execution.
Selecting test cases by tags is a very flexible mechanism and allows many interesting possibilities:
-
A subset of tests to be executed before other tests, often called smoke tests, can be tagged with
smokeand executed with--include smoke. -
Unfinished test can be committed to version control with a tag such as
not_readyand excluded from the test execution with--exclude not_ready. -
Tests can be tagged with
sprint-<num>, where<num>specifies the number of the current sprint, and after executing all test cases, a separate report containing only the tests for a certain sprint can be generated (for example,rebot --include sprint-42 output.xml).
Options --include and --exclude can be used in combination
with --suite and --test discussed in the previous section.
In that case tests that are selected must match all selection criteria:
Note
robot:exclude is new in Robot Framework 5.0.
Note
Using variables with robot:exclude is new in Robot Framework 7.2.
Using variables with tags matched against --include and
--exclude is not supported.
Note
In Robot Framework 7.0 --include and --test were cumulative
and selected tests needed to match only either of these options. That behavior
caused backwards incompatibility problems and it was reverted already in
Robot Framework 7.0.1.
Re-executing failed test cases¶
Command line option --rerunfailed (-R) can be used to select all failed
tests from an earlier output file for re-execution. This option is useful,
for example, if running all tests takes a lot of time and one wants to
iteratively fix failing test cases.
Behind the scenes this option selects the failed tests as they would have been
selected individually using the --test option. It is possible to further
fine-tune the list of selected tests by using --test, --suite,
--include and --exclude options.
It is an error if the output contains no failed tests, but this behavior can be
changed by using the --runemptysuite option discussed below.
Using an output not originating from executing the same tests that are run
now causes undefined results. Using a special value NONE as the output is
same as not specifying this option at all.
Tip
Re-execution results and original results can be merged together
using the --merge command line option.
Re-executing failed test suites¶
Command line option --rerunfailedsuites (-S) can be used to select all
failed suites from an earlier output file for re-execution. Like
--rerunfailed (-R), this option is useful when full test execution
takes a lot of time. Note that all tests from a failed test suite will be
re-executed, even passing ones. This option is useful when the tests in
a test suite depends on each other.
Behind the scenes this option selects the failed suites as they would have been
selected individually with the --suite option. It is possible to further
fine-tune the list of selected tests by using --test, --suite,
--include and --exclude options.
When no tests match selection¶
By default when no tests match the selection criteria test execution fails with an error like:
Because no outputs are generated, this behavior can be problematic if tests
are executed and results processed automatically. Luckily a command line
option --RunEmptySuite (case-insensitive) can be used to force
the suite to be executed also in this case. As a result normal outputs are
created but show zero executed tests. The same option can be used also to
alter the behavior when an empty directory or a test case file containing
no tests is executed.
Similar situation can occur also when processing output files with Rebot.
It is possible that no test match the used filtering criteria or that
the output file contained no tests to begin with. By default executing
Rebot fails in these cases, but it has a separate
--ProcessEmptySuite option that can be used to alter the behavior.
In practice this option works the same way as --RunEmptySuite when
running tests.
Note
Using --RunEmptySuite with --ReRunFailed
or --ReRunFailedSuites requires Robot Framework 5.0.1
or newer.
Setting metadata¶
Setting suite name¶
When Robot Framework parses test data, suite names are created
from file and directory names. The name of the top-level test suite
can, however, be overridden with the command line option
--name (-N):
Setting suite documentation¶
In addition to defining documentation in the test data, documentation
of the top-level suite can be given from the command line with the
option --doc (-D). The value can contain simple HTML formatting
and must be quoted if it contains spaces.
If the given documentation is a relative or absolute path pointing to an existing file, the actual documentation will be read from that file. This is especially convenient if the externally specified documentation is long or contains multiple lines.
Examples:
Note
Reading documentation from an external file is new in Robot Framework 4.1.
Prior to Robot Framework 3.1, underscores in documentation were
converted to spaces same way as with the --name option.
Setting free suite metadata¶
Free suite metadata may also be given from the command line with the
option --metadata (-M). The argument must be in the format
name:value, where name the name of the metadata to set and
value is its value. The value can contain simple HTML formatting and
the whole argument must be quoted if it contains spaces.
This option may be used several times to set multiple metadata values.
If the given value is a relative or absolute path pointing to an existing
file, the actual value will be read from that file. This is especially
convenient if the value is long or contains multiple lines.
If the value should be a path to an existing file, not read from that file,
the value must be separated with a space from the name: part.
Examples:
Note
Reading metadata value from an external file is new in Robot Framework 4.1.
Prior to Robot Framework 3.1, underscores in the value were
converted to spaces same way as with the --name option.
Setting test tags¶
The command line option --settag (-G) can be used to set
the given tag to all executed test cases. This option may be used
several times to set multiple tags.
Configuring where to search libraries and other extensions¶
When Robot Framework imports a test library, listener, or some other Python based extension, it uses the Python interpreter to import the module containing the extension from the system. The list of locations where modules are looked for is called the module search path, and its contents can be configured using different approaches explained in this section.
Robot Framework uses Python's module search path also when importing resource and variable files if the specified path does not match any file directly.
The module search path being set correctly so that libraries and other extensions are found is a requirement for successful test execution. If you need to customize it using approaches explained below, it is often a good idea to create a custom start-up script.
Locations automatically in module search path¶
Python interpreters have their own standard library as well as a directory where third party modules are installed automatically in the module search path. This means that test libraries packaged using Python's own packaging system are automatically installed so that they can be imported without any additional configuration.
PYTHONPATH¶
Python reads additional locations to be added to
the module search path from PYTHONPATH environment variables.
If you want to specify more than one location in any of them, you
need to separate the locations with a colon on UNIX-like machines (e.g.
/opt/libs:$HOME/testlibs) and with a semicolon on Windows (e.g.
D:\libs;%HOMEPATH%\testlibs).
Environment variables can be configured permanently system wide or so that they affect only a certain user. Alternatively they can be set temporarily before running a command, something that works extremely well in custom start-up scripts.
Using --pythonpath option¶
Robot Framework has a separate command line option --pythonpath (-P)
for adding locations to the module search path.
Multiple locations can be given by separating them with a colon (:) or
a semicolon (;) or by using this option multiple times. If the value
contains both colons and semicolons, it is split from semicolons. Paths
can also be glob patterns matching multiple paths, but they typically
need to be escaped when used on the console.
Examples:
Note
Both colon and semicolon work regardless the operating system. Using semicolon is new in Robot Framework 5.0.
Configuring sys.path programmatically¶
Python interpreters store the module search path they use as a list of strings in sys.path attribute. This list can be updated dynamically during execution, and changes are taken into account next time when something is imported.
Setting variables¶
Variables can be set from the command line either individually
using the --variable (-v) option or through variable files
with the --variablefile (-V) option. Variables and variable
files are explained in separate chapters, but the following examples
illustrate how to use these options:
Dry run¶
Robot Framework supports so called dry run mode where the tests are
run normally otherwise, but the keywords coming from the test libraries
are not executed at all. The dry run mode can be used to validate the
test data; if the dry run passes, the data should be syntactically
correct. This mode is triggered using option --dryrun.
The dry run execution may fail for following reasons:
- Using keywords that are not found.
- Using keywords with wrong number of arguments.
- Using user keywords that have invalid syntax.
In addition to these failures, normal execution errors are shown, for example, when test library or resource file imports cannot be resolved.
It is possible to disable dry run validation of specific user keywords
by adding a special robot:no-dry-run keyword tag to them. This is useful
if a keyword fails in the dry run mode for some reason, but work fine when
executed normally.
Note
The dry run mode does not validate variables.
Randomizing execution order¶
The test execution order can be randomized using option
--randomize <what>[:<seed>], where <what> is one of the following:
-
tests - Test cases inside each test suite are executed in random order.
-
suites - All test suites are executed in a random order, but test cases inside
suites are run in the order they are defined.
-
all - Both test cases and test suites are executed in a random order.
-
none - Neither execution order of test nor suites is randomized.
This value can be used to override the earlier value set with
--randomize.
It is possible to give a custom seed
to initialize the random generator. This is useful if you want to re-run tests
using the same order as earlier. The seed is given as part of the value for
--randomize in format <what>:<seed> and it must be an integer.
If no seed is given, it is generated randomly. The executed top level test
suite automatically gets metadata named Randomized that tells both
what was randomized and what seed was used.
Examples:
Programmatic modification of test data¶
If the provided built-in features to modify test data before execution
are not enough, Robot Framework makes it possible to do
custom modifications programmatically. This is accomplished by creating
a so called pre-run modifier and activating it using the
--prerunmodifier option.
Pre-run modifiers should be implemented as visitors that can traverse through the executable test suite structure and modify it as needed. The visitor interface is explained as part of the Robot Framework API documentation, and it possible to modify executed test suites, test cases and keywords using it. The examples below ought to give an idea of how pre-run modifiers can be used and how powerful this functionality is.
When a pre-run modifier is taken into use on the command line using the
--prerunmodifier option, it can be specified either as a name of
the modifier class or a path to the modifier file. If the modifier is given
as a class name, the module containing the class must be in the module search
path, and if the module name is different than the class name, the given
name must include both like module.ModifierClass. If the modifier is given
as a path, the class name must be same as the file name. For most parts this
works exactly like when importing a test library.
If a modifier requires arguments, like the examples below do, they can be
specified after the modifier name or path using either a colon (:) or a
semicolon (;) as a separator. If both are used in the value, the one used
first is considered to be the actual separator. Starting from Robot Framework
4.0, arguments also support the named argument syntax as well as argument
conversion based on type hints and default values the same way
as keywords do.
If more than one pre-run modifier is needed, they can be specified by using
the --prerunmodifier option multiple times. If similar modifying
is needed before creating logs and reports, programmatic modification of
results can be enabled using the --prerebotmodifier option.
Pre-run modifiers are executed before other configuration affecting the
executed test suite and test cases. Most importantly, options related to
selecting test cases are processed after modifiers, making it possible to
use options like --include also with possible dynamically added
tests.
Another way to modify tests is using the listener version 3 interface.
Modifying the data argument passed to the start_suite listener method
when it is called for the first time has in practice the same effect as using
a pre-run modifier. The main difference is that --include/--exclude and other
such options do not have an effect to the added tests. The main benefit of using
listeners is that they allow making modifications dynamically based on what
happens during the execution.
Tip
Modifiers are taken into use from the command line exactly the same way as listeners. See the Registering listeners from command line section for more information and examples.
Example: Select every Xth test¶
The first example shows how a pre-run modifier can remove tests from the executed test suite structure. In this example only every Xth tests is preserved, and the X is given from the command line along with an optional start index.
If the above pre-run modifier is in a file SelectEveryXthTest.py and
the file is in the module search path, it could be used like this:
Example: Exclude tests by name¶
Also the second example removes tests, this time based on a given name pattern.
In practice it works like a negative version of the built-in --test
option.
Assuming the above modifier is in a file named ExcludeTests.py, it
could be used like this:
Example: Disable setups and teardowns¶
Sometimes when debugging tests it can be useful to disable setups or teardowns. This can be accomplished by editing the test data, but pre-run modifiers make it easy to do that temporarily for a single run:
Assuming that the above modifiers are all in a file named disable.py
and this file is in the module search path, setups and teardowns could be
disabled, for example, as follows:
Note
Prior to Robot Framework 4.0 setup and teardown were accessed via
the intermediate keywords attribute and, for example, suite setup
was disabled like suite.keywords.setup = None.
Controlling console output¶
There are various command line options to control how execution is reported on the console.
Built-in console loggers¶
Robot Framework has several built-in console loggers that provide output on
different verbosity levels. The logger to use can selected with the
--console option that supports the following case-insensitive values:
-
verbose - Every suite and test is reported individually. This is the default.
-
dotted - Only show
.for passed test,Ffor failed tests,sfor skipped tests andxfor tests which are skipped because test execution exit. Failed tests are listed separately after execution. This output type makes it easy to see are there any failures during execution even if there would be a lot of tests. -
quiet - No output except for errors and warnings.
-
none - No output whatsoever.
Separate convenience options --dotted (-.) and --quiet
are shortcuts for --console dotted and --console quiet, respectively.
Examples:
Custom console loggers¶
In addition to the built-in values listed above, the --console option
accepts a path or name of a custom console logger class or module. The argument
format is the same as with --listener: a path to a Python file, a
module name, or a dotted class name, with optional arguments separated by colons.
Examples:
Custom console loggers receive the same listener method calls as normal listeners. Only methods that are implemented are called — missing methods are silently ignored. This means a minimal console only needs to implement the hooks it is interested in.
Note
Console loggers should treat the data and result objects passed
to their methods as read-only. Currently live objects are passed so modifications
would take effect, but this behaviour may change without notice. Use the
Listener interface if you need to legitimately modify them.
Support for custom console loggers is new in Robot Framework 7.5.
Example¶
The following example shows a custom console that provides a compact progress
view with elapsed time and a running pass/fail counter — useful in CI pipelines
or when the verbose output is too noisy but dotted does not provide enough
context:
Programmatic usage¶
When using the programmatic API, the console option also accepts
a pre-instantiated Python object:
Extending built-in console loggers¶
Custom console loggers can be implemented so that they extend the built-in console loggers. The built-in loggers are exposed via the robot.api.console module and their API docs provide more information.
Here is a very simple example of custom console logger that extends the
DottedConsole and disables writing result file paths to the console:
Configuring custom console loggers¶
Custom console loggers must handle their configuration on their own. Options like
--consolewidth discussed in the subsequent sections only affect the
built-in console loggers.
Console width¶
The width of console output can be set using the option --consolewidth (-W).
The default width is 78 characters.
Tip
On many UNIX-like machines you can use handy $COLUMNS
environment variable like --consolewidth $COLUMNS.
Console colors¶
The --consolecolors (-C) option is used to control whether
colors should be used in the console output. Colors are implemented
using ANSI escape codes with a backup mechanism for older Windows
versions that do not support ANSI codes.
This option supports the following case-insensitive values:
-
auto - Colors are enabled when outputs are written into the console, but not
when they are redirected into a file or elsewhere. This is the default.
-
on - Colors are used also when outputs are redirected. Does not work on Windows.
-
ansi - Same as
onbut forces ANSI codes to be used unconditionally on Windows. -
off - Colors are disabled.
Note
Using ANSI codes on Windows by default is new in Robot Framework 7.1.
Console links¶
Result file paths written to the console at the end of the execution are, by default,
hyperlinks. This behavior can be controlled with the --consolelinks option
that accepts the following case-insensitive values:
-
auto - Paths are converted to links when console colors are enabled. This is the default.
-
off - Links are unconditionally disabled.
The hyperlink support depends also on the console that is used, but nowadays the support is pretty good. The commonly used Windows Console does not support links, though, but the newer Windows Terminal does.
Note
Hyperlink support is new in Robot Framework 7.1.
Console markers¶
Special markers . (success) and
F (failure) are shown on the console when using the verbose output
and top level keywords in test cases end. The markers allow following
the test execution in high level, and they are erased when test cases end.
It is possible to configure when markers
are used with --consolemarkers (-K) option. It supports the following
case-insensitive values:
-
auto - Markers are enabled when the standard output is written into the console,
but not when it is redirected into a file or elsewhere. This is the default.
-
on - Markers are always used.
-
off - Markers are disabled.
Setting listeners¶
Listeners can be used to monitor the test execution. When they are taken into
use from the command line, they are specified using the --listener
command line option. The value can either be a path to a listener or
a listener name. See the Listener interface section for more details
about importing listeners and using them in general.