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Suricata Verification Tests

These are tests that run Suricata with a specific configuration and/or inputs and verify the outputs.

Running All Tests

From your Suricata source directory run:

../path/to/suricata-verify/run.py

Or to run a single test:

../path/to/suricata-tests/run.py TEST-NAME

Adding a New Test

  • Create a directory that is the name of the new test.

  • Copy a single pcap file into the test directory. It must end in ".pcap" or ".pcapng".

    This is enough for a basic test that will run Suricata over the pcap testing for a successful exit code.

  • Optional: Create a suricata.yaml in the test directory.

    Its usually OK to just add the bits of YAML required to enable features for the test.

    If the test directory does not include a suricata.yaml, the one found in your build directory will be used.

  • Add any rules required to ${dir}/test.rules.

  • Add a test.yaml descriptor file to add further control to your tests such as restricting features required for the test, and validating output.

Example test.yaml

requires:

  # Require a minimum version of Suricata.
  min-version: 4.1.0

  # Require that the Suricata version be less than a version.
  lt-version: 6

  # Test is only for this version. For example, 4.0 would match any 4.0 
  # release, but 4.0.3 would only match 4.0.3.
  version: 4.0

  # Require the presence of specific features.
  features:
    # Restrict the test to builds with HAVE_LUA.
    - HAVE_LUA

  # Don't require a pcap file to be present. By default a test will be skipped
  # if there is no pcap file in the test directory. Not applicable if a
  # command is provided.
  pcap: false

  # Run the script and only continue with the test if the script exists
  # successfully.
  script:
    - command1
    - command2
    - ...

skip:
  # Skip a test if a feature is present, with a message that is logged.
  - feature: RUST
    msg: eve dns v1 not supported by rust

# Add additional arguments to Suricata.
args:
  - --set stream.reassembly.depth=0

# Override the default command. This is also an example of how it can
# be broken up over multiple lines for readability. If providing the command
# all arguments must be provided as part of the command.
command: |
  ${SRCDIR}/src/suricata -T -c ${TEST_DIR}/suricata.yaml -vvv \
      -l ${TEST_DIR}/output --set default-rule-path="${TEST_DIR}"

# Execute Suricata with the test parameters this many times. All checks will
# done after each iteration.
count: 10

pre-check: |
  # Some script to run before running checks.
  cp eve.json eve.json.bak

checks:

  # A verification filter that is run over the eve.json. Multiple
  # filters may exist and all must pass for the test to pass.
  - filter:
      # The number of records this filter should match.
      count: 1
	  
      # The fields to match on.
      match:
        # Example match on event_type:
        event_type: alert

        # Example match on array item:
        alert.metadata.tag[0]: "tag1"

        # Example match on the length of an array.
        alert.metadata.tag.__len: 3
		
        # Check that a field exists:
        has-key: alert.rule

        # Check that a field does not exist:
        not-has-key: flow

  - shell:
      # A simple shell check. If the command exits with a non-0 exit code the
      # check will fail. The script is run in the output directory of the
      # test.
      args: grep "GPL ATTACK_RESPONSE" fast.log

  - shell:
      # A shell check that also tests the output of the command.
      args: cat fast.log | wc -l | xargs
      expect: 1

Adding a new test the automated way: createst

Script to create a test directory with test.yaml for a given PCAP. This needs to be run from a valid Suricata source directory.

Usage

usage: createst.py [-h] [--output-path <output-path>] [--eventtype-only]
                   [--allow-events [ALLOW_EVENTS]]
                   <test-name> <pcap-file>

Create tests with a given PCAP. Execute the script from a valid Suricata source
directory.

positional arguments:
  <test-name>           Name of the test folder
  <pcap-file>           Path to the PCAP file

optional arguments:
  -h, --help            show this help message and exit
  --output-path <output-path>
                        Path to the folder where generated test.yaml should be
                        put
  --eventtype-only      Create filter blocks based on event types only
  --allow-events [ALLOW_EVENTS]
                        Create filter blocks for the specified events