diff --git a/.github/license-short.txt b/.github/license-short.txt
new file mode 100644
index 0000000..86c9ebe
--- /dev/null
+++ b/.github/license-short.txt
@@ -0,0 +1,3 @@
+Copyright (c) 2021-2023 Arista Networks, Inc.
+Use of this source code is governed by the MIT license
+that can be found in the LICENSE file.
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6f81de8..fcd4646 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,5 +1,7 @@
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
+files: ^(j2lint|tests)/
+
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v2.4.0
@@ -10,6 +12,33 @@ repos:
       - id: check-added-large-files
       - id: check-merge-conflict
 
+  - repo: https://github.com/Lucas-C/pre-commit-hooks
+    rev: v1.5.4
+    hooks:
+      - name: Check and insert license on Python files
+        id: insert-license
+        files: .*\.py$
+        args:
+          - --license-filepath
+          - .github/license-short.txt
+          - --use-current-year
+          - --allow-past-years
+          - --fuzzy-match-generates-todo
+          - --no-extra-eol
+
+      - name: Check and insert license on Jinja2 files
+        id: insert-license
+        files: .*\.j2$
+        args:
+          - --license-filepath
+          - .github/license-short.txt
+          - --use-current-year
+          - --allow-past-years
+          - --fuzzy-match-generates-todo
+          - --comment-style
+          - '{#||#}'
+          - --no-extra-eol
+
   - repo: https://github.com/pycqa/flake8
     rev: 4.0.1
     hooks:
diff --git a/j2lint/__init__.py b/j2lint/__init__.py
index d460fa1..53a3682 100644
--- a/j2lint/__init__.py
+++ b/j2lint/__init__.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """__init__.py - A command-line utility that checks for best practices in Jinja2.
 """
 NAME = "j2lint"
diff --git a/j2lint/__main__.py b/j2lint/__main__.py
index b01239a..34c735d 100644
--- a/j2lint/__main__.py
+++ b/j2lint/__main__.py
@@ -1,4 +1,7 @@
 #!/usr/bin/python
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """__main__.py - A command-line utility that checks for best practices in Jinja2.
 """
 import sys
diff --git a/j2lint/cli.py b/j2lint/cli.py
index a1749cf..0e951a2 100644
--- a/j2lint/cli.py
+++ b/j2lint/cli.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """cli.py - Command line argument parser.
 """
 from __future__ import annotations
diff --git a/j2lint/linter/__init__.py b/j2lint/linter/__init__.py
index e69de29..012e8cc 100644
--- a/j2lint/linter/__init__.py
+++ b/j2lint/linter/__init__.py
@@ -0,0 +1,3 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
diff --git a/j2lint/linter/collection.py b/j2lint/linter/collection.py
index 27b4f93..8be1b6d 100644
--- a/j2lint/linter/collection.py
+++ b/j2lint/linter/collection.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """collection.py - Class to create a collection of linting rules.
 """
 from __future__ import annotations
diff --git a/j2lint/linter/error.py b/j2lint/linter/error.py
index 3b7513d..a12dfb0 100644
--- a/j2lint/linter/error.py
+++ b/j2lint/linter/error.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """error.py - Error classes to format the lint errors.
 """
 from __future__ import annotations
diff --git a/j2lint/linter/indenter/__init__.py b/j2lint/linter/indenter/__init__.py
index e69de29..012e8cc 100644
--- a/j2lint/linter/indenter/__init__.py
+++ b/j2lint/linter/indenter/__init__.py
@@ -0,0 +1,3 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
diff --git a/j2lint/linter/indenter/node.py b/j2lint/linter/indenter/node.py
index 4b123cd..a81f3e1 100644
--- a/j2lint/linter/indenter/node.py
+++ b/j2lint/linter/indenter/node.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """node.py - Class node for creating a parse tree for jinja statements and
              checking jinja statement indentation.
 """
diff --git a/j2lint/linter/indenter/statement.py b/j2lint/linter/indenter/statement.py
index 68e3195..3a4fd4c 100644
--- a/j2lint/linter/indenter/statement.py
+++ b/j2lint/linter/indenter/statement.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """statement.py - Class and variables for jinja statements.
 """
 from __future__ import annotations
diff --git a/j2lint/linter/rule.py b/j2lint/linter/rule.py
index 3378ee5..8ae8f22 100644
--- a/j2lint/linter/rule.py
+++ b/j2lint/linter/rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """rule.py - Base class for all the lint rules with functions for mathching
              line and text based rule.
 """
diff --git a/j2lint/linter/runner.py b/j2lint/linter/runner.py
index bc4abfe..7f5ca30 100644
--- a/j2lint/linter/runner.py
+++ b/j2lint/linter/runner.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """runner.py - Class to run the rules collection for all the files.
 """
 from __future__ import annotations
diff --git a/j2lint/logger.py b/j2lint/logger.py
index 17dd224..060f23a 100644
--- a/j2lint/logger.py
+++ b/j2lint/logger.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """logger.py - Creates logger object.
 """
 import logging
diff --git a/j2lint/rules/__init__.py b/j2lint/rules/__init__.py
index e69de29..012e8cc 100644
--- a/j2lint/rules/__init__.py
+++ b/j2lint/rules/__init__.py
@@ -0,0 +1,3 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
diff --git a/j2lint/rules/jinja_operator_has_spaces_rule.py b/j2lint/rules/jinja_operator_has_spaces_rule.py
index 03b1012..1570989 100644
--- a/j2lint/rules/jinja_operator_has_spaces_rule.py
+++ b/j2lint/rules/jinja_operator_has_spaces_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_operator_has_spaces_rule.py - Rule class to check if operator has
                                   surrounding spaces.
 """
diff --git a/j2lint/rules/jinja_statement_delimiter_rule.py b/j2lint/rules/jinja_statement_delimiter_rule.py
index 3958c66..185ebdc 100644
--- a/j2lint/rules/jinja_statement_delimiter_rule.py
+++ b/j2lint/rules/jinja_statement_delimiter_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_statement_delimiter_rule.py - Rule class to check if jinja delimiters
                                     are wrong.
 """
diff --git a/j2lint/rules/jinja_statement_has_spaces_rule.py b/j2lint/rules/jinja_statement_has_spaces_rule.py
index 1a41542..634e60e 100644
--- a/j2lint/rules/jinja_statement_has_spaces_rule.py
+++ b/j2lint/rules/jinja_statement_has_spaces_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_statement_has_spaces_rule.py - Rule class to check if jinja statement has
                                         at least a single space surrounding the
                                         delimiter.
diff --git a/j2lint/rules/jinja_template_indentation_rule.py b/j2lint/rules/jinja_template_indentation_rule.py
index f3d2312..c727314 100644
--- a/j2lint/rules/jinja_template_indentation_rule.py
+++ b/j2lint/rules/jinja_template_indentation_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_template_indentation_rule.py - Rule class to check the jinja statement
                                      indentation is correct.
 """
diff --git a/j2lint/rules/jinja_template_no_tabs_rule.py b/j2lint/rules/jinja_template_no_tabs_rule.py
index 7627b07..e31beac 100644
--- a/j2lint/rules/jinja_template_no_tabs_rule.py
+++ b/j2lint/rules/jinja_template_no_tabs_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_template_no_tabs_rule.py - Rule class to check the file does not use tabs
                                 for indentation.
 """
diff --git a/j2lint/rules/jinja_template_single_statement_rule.py b/j2lint/rules/jinja_template_single_statement_rule.py
index cf3e196..1e0a22c 100644
--- a/j2lint/rules/jinja_template_single_statement_rule.py
+++ b/j2lint/rules/jinja_template_single_statement_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_template_single_statement_rule.py - Rule class to check if only a single
                                          jinja statement is present on each
                                          line.
diff --git a/j2lint/rules/jinja_template_syntax_error_rule.py b/j2lint/rules/jinja_template_syntax_error_rule.py
index 7f59a45..51e3e3c 100644
--- a/j2lint/rules/jinja_template_syntax_error_rule.py
+++ b/j2lint/rules/jinja_template_syntax_error_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_template_syntax_error_rule.py - Rule class to check that file does not
                                      have jinja syntax errors.
 """
diff --git a/j2lint/rules/jinja_variable_has_space_rule.py b/j2lint/rules/jinja_variable_has_space_rule.py
index b65d840..976a138 100644
--- a/j2lint/rules/jinja_variable_has_space_rule.py
+++ b/j2lint/rules/jinja_variable_has_space_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_variable_has_space_rule.py - Rule class to check if jinja variables have
                                   single space between curly brackets and
                                   variable name.
diff --git a/j2lint/rules/jinja_variable_name_case_rule.py b/j2lint/rules/jinja_variable_name_case_rule.py
index c65f2b1..5956a1a 100644
--- a/j2lint/rules/jinja_variable_name_case_rule.py
+++ b/j2lint/rules/jinja_variable_name_case_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """jinja_variable_name_case_rule.py - Rule class to check the variables use
                                   lower case.
 """
diff --git a/j2lint/rules/jinja_variable_name_format_rule.py b/j2lint/rules/jinja_variable_name_format_rule.py
index 4cd5083..46725c7 100644
--- a/j2lint/rules/jinja_variable_name_format_rule.py
+++ b/j2lint/rules/jinja_variable_name_format_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """ jinja_variable_name_format_rule.py - Rule class to check that variable names
                                      only use underscores.
 """
diff --git a/j2lint/utils.py b/j2lint/utils.py
index fc8263d..05855d7 100644
--- a/j2lint/utils.py
+++ b/j2lint/utils.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """utils.py - Utility functions for jinja2 linter.
 """
 from __future__ import annotations
diff --git a/tests/__init__.py b/tests/__init__.py
index e69de29..012e8cc 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -0,0 +1,3 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
diff --git a/tests/conftest.py b/tests/conftest.py
index f3c7924..ea3a61f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 content of conftest.py
 """
diff --git a/tests/data/test.j2 b/tests/data/test.j2
index e69de29..a294c6c 100644
--- a/tests/data/test.j2
+++ b/tests/data/test.j2
@@ -0,0 +1,5 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 476ed02..ea60b9b 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.cli.py
 """
diff --git a/tests/test_linter/data/disable-rule-3.j2 b/tests/test_linter/data/disable-rule-3.j2
index 29bbdc1..f4c9447 100644
--- a/tests/test_linter/data/disable-rule-3.j2
+++ b/tests/test_linter/data/disable-rule-3.j2
@@ -1,2 +1,7 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {# j2lint: disable=test-rule-3 #}
 blah
diff --git a/tests/test_linter/data/test.j2 b/tests/test_linter/data/test.j2
index e69de29..a294c6c 100644
--- a/tests/test_linter/data/test.j2
+++ b/tests/test_linter/data/test.j2
@@ -0,0 +1,5 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
diff --git a/tests/test_linter/test_collection.py b/tests/test_linter/test_collection.py
index 17adca8..7b69a8a 100644
--- a/tests/test_linter/test_collection.py
+++ b/tests/test_linter/test_collection.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.linter.collection.py
 """
diff --git a/tests/test_linter/test_error.py b/tests/test_linter/test_error.py
index 0315a94..6cebcbf 100644
--- a/tests/test_linter/test_error.py
+++ b/tests/test_linter/test_error.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.linter.error.py
 """
diff --git a/tests/test_linter/test_indenter/test_node.py b/tests/test_linter/test_indenter/test_node.py
index 4aaebef..3f02092 100644
--- a/tests/test_linter/test_indenter/test_node.py
+++ b/tests/test_linter/test_indenter/test_node.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.linter.node.py
 """
diff --git a/tests/test_linter/test_indenter/test_statement.py b/tests/test_linter/test_indenter/test_statement.py
index e8ff1c2..9fcc210 100644
--- a/tests/test_linter/test_indenter/test_statement.py
+++ b/tests/test_linter/test_indenter/test_statement.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.linter.indenter.statement.py
 
diff --git a/tests/test_linter/test_rule.py b/tests/test_linter/test_rule.py
index 7dd9237..c164e18 100644
--- a/tests/test_linter/test_rule.py
+++ b/tests/test_linter/test_rule.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.linter.rule.py
 """
@@ -49,7 +52,7 @@ def test_is_valid_language(self, test_rule, file):
                 None,
                 1,
                 {"path": f"{TEST_DATA_DIR}/test.j2"},
-                [("T0", 42)],
+                [("T0", 42), ("T0", 42), ("T0", 42), ("T0", 42), ("T0", 42)],
                 [],
                 id="checkline rule error",
             ),
diff --git a/tests/test_linter/test_runner.py b/tests/test_linter/test_runner.py
index 28ad128..07c9018 100644
--- a/tests/test_linter/test_runner.py
+++ b/tests/test_linter/test_runner.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.linter.runner.py
 """
diff --git a/tests/test_logger.py b/tests/test_logger.py
index 222c00b..b199774 100644
--- a/tests/test_logger.py
+++ b/tests/test_logger.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.logger.py
 """
diff --git a/tests/test_rules/data/jinja_operator_has_spaces_rule.j2 b/tests/test_rules/data/jinja_operator_has_spaces_rule.j2
index af3de77..51434b9 100644
--- a/tests/test_rules/data/jinja_operator_has_spaces_rule.j2
+++ b/tests/test_rules/data/jinja_operator_has_spaces_rule.j2
@@ -1,3 +1,8 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {{ test|list }}
 {{ test| list }}
 {{ test |list }}
diff --git a/tests/test_rules/data/jinja_statement_delimiter_rule.j2 b/tests/test_rules/data/jinja_statement_delimiter_rule.j2
index 93dc728..be21d0e 100644
--- a/tests/test_rules/data/jinja_statement_delimiter_rule.j2
+++ b/tests/test_rules/data/jinja_statement_delimiter_rule.j2
@@ -1,3 +1,8 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {%+ if test %}
 {% endif %}
 {%- if test %}
diff --git a/tests/test_rules/data/jinja_statement_has_spaces_rule.j2 b/tests/test_rules/data/jinja_statement_has_spaces_rule.j2
index 0d2ccc0..6387495 100644
--- a/tests/test_rules/data/jinja_statement_has_spaces_rule.j2
+++ b/tests/test_rules/data/jinja_statement_has_spaces_rule.j2
@@ -1,3 +1,8 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {%set test=42%}
 {% set test=42%}
 {%set test=42 %}
diff --git a/tests/test_rules/data/jinja_template_indentation_rule.IndexError.j2 b/tests/test_rules/data/jinja_template_indentation_rule.IndexError.j2
index dfecf9e..cab8967 100644
--- a/tests/test_rules/data/jinja_template_indentation_rule.IndexError.j2
+++ b/tests/test_rules/data/jinja_template_indentation_rule.IndexError.j2
@@ -1,3 +1,8 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 7{% if test %}
 {% set tets=42%}
 {% endif %}
diff --git a/tests/test_rules/data/jinja_template_indentation_rule.JinjaLinterError.j2 b/tests/test_rules/data/jinja_template_indentation_rule.JinjaLinterError.j2
index d89a818..3c53b9e 100644
--- a/tests/test_rules/data/jinja_template_indentation_rule.JinjaLinterError.j2
+++ b/tests/test_rules/data/jinja_template_indentation_rule.JinjaLinterError.j2
@@ -1,2 +1,7 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {% if test %}
 {% endfor %}
diff --git a/tests/test_rules/data/jinja_template_indentation_rule.j2 b/tests/test_rules/data/jinja_template_indentation_rule.j2
index c8f625b..a0cdb7b 100644
--- a/tests/test_rules/data/jinja_template_indentation_rule.j2
+++ b/tests/test_rules/data/jinja_template_indentation_rule.j2
@@ -1,3 +1,8 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {% if test %}
 {%  endif %}
 
diff --git a/tests/test_rules/data/jinja_template_indentation_rule.missing_end_tag.j2 b/tests/test_rules/data/jinja_template_indentation_rule.missing_end_tag.j2
index a85cecb..af6d8eb 100644
--- a/tests/test_rules/data/jinja_template_indentation_rule.missing_end_tag.j2
+++ b/tests/test_rules/data/jinja_template_indentation_rule.missing_end_tag.j2
@@ -1,2 +1,7 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {% if test %}
 {# missing the endif #}
diff --git a/tests/test_rules/data/jinja_template_no_tabs_rule.j2 b/tests/test_rules/data/jinja_template_no_tabs_rule.j2
index e5fd884..9167263 100644
--- a/tests/test_rules/data/jinja_template_no_tabs_rule.j2
+++ b/tests/test_rules/data/jinja_template_no_tabs_rule.j2
@@ -1 +1,6 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 	I put a tab before
diff --git a/tests/test_rules/data/jinja_template_single_statement_rule.j2 b/tests/test_rules/data/jinja_template_single_statement_rule.j2
index cdb87e7..18ac185 100644
--- a/tests/test_rules/data/jinja_template_single_statement_rule.j2
+++ b/tests/test_rules/data/jinja_template_single_statement_rule.j2
@@ -1 +1,6 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {% set test=42 %}{% set blah=43 %}
diff --git a/tests/test_rules/data/jinja_template_syntax_error_rule.j2 b/tests/test_rules/data/jinja_template_syntax_error_rule.j2
index 66c9e7a..bfa13be 100644
--- a/tests/test_rules/data/jinja_template_syntax_error_rule.j2
+++ b/tests/test_rules/data/jinja_template_syntax_error_rule.j2
@@ -1 +1,6 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {% set test %}
diff --git a/tests/test_rules/data/jinja_variable_has_space_rule.j2 b/tests/test_rules/data/jinja_variable_has_space_rule.j2
index 5f73e8e..6152265 100644
--- a/tests/test_rules/data/jinja_variable_has_space_rule.j2
+++ b/tests/test_rules/data/jinja_variable_has_space_rule.j2
@@ -1,3 +1,8 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {{ethernet}}
 {{ ethernet}}
 # Too many spaces
diff --git a/tests/test_rules/data/jinja_variable_name_case_rule.j2 b/tests/test_rules/data/jinja_variable_name_case_rule.j2
index 70690ad..ccc60cd 100644
--- a/tests/test_rules/data/jinja_variable_name_case_rule.j2
+++ b/tests/test_rules/data/jinja_variable_name_case_rule.j2
@@ -1,3 +1,8 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {{ TEST }}
 {{ tEST }}
 {{ t_A_t }}
diff --git a/tests/test_rules/data/jinja_variable_name_format_rule.j2 b/tests/test_rules/data/jinja_variable_name_format_rule.j2
index f5df0f1..8597b6b 100644
--- a/tests/test_rules/data/jinja_variable_name_format_rule.j2
+++ b/tests/test_rules/data/jinja_variable_name_format_rule.j2
@@ -1 +1,6 @@
+{#
+ Copyright (c) 2021-2023 Arista Networks, Inc.
+ Use of this source code is governed by the MIT license
+ that can be found in the LICENSE file.
+#}
 {{ test-test }}
diff --git a/tests/test_rules/test_rules.py b/tests/test_rules/test_rules.py
index b668933..41d8396 100644
--- a/tests/test_rules/test_rules.py
+++ b/tests/test_rules/test_rules.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 import logging
 import pathlib
 
@@ -8,7 +11,7 @@
 PARAMS = [
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_template_syntax_error_rule.j2",
-        [("S0", 1)],
+        [("S0", 6)],
         [],
         [],
         id="jinja_template_syntax_error_rule",
@@ -16,15 +19,15 @@
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_variable_has_space_rule.j2",
         [
-            ("S1", 1),
-            ("S1", 2),
-            ("S1", 4),
-            ("S1", 5),
             ("S1", 6),
             ("S1", 7),
-            ("S2", 7),  # the faulty {{+ethernet }} triggers S2 as well
-            ("S1", 8),
             ("S1", 9),
+            ("S1", 10),
+            ("S1", 11),
+            ("S1", 12),
+            ("S2", 12),  # the faulty {{+ethernet }} triggers S2 as well
+            ("S1", 13),
+            ("S1", 14),
         ],
         [],
         [],
@@ -32,21 +35,29 @@
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_operator_has_spaces_rule.j2",
-        [("S2", 1), ("S2", 2), ("S2", 3), ("S2", 6), ("S2", 6), ("S2", 8), ("S2", 10)],
+        [
+            ("S2", 6),
+            ("S2", 7),
+            ("S2", 8),
+            ("S2", 11),
+            ("S2", 11),
+            ("S2", 13),
+            ("S2", 15),
+        ],
         [],
         [],
         id="jinja_operator_has_space_rule",
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_template_indentation_rule.j2",
-        [("S3", 2), ("S3", 6), ("S3", 5)],
+        [("S3", 7), ("S3", 11), ("S3", 10)],
         [],
         [],
         id="jinja_template_indentation_rule",
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_template_indentation_rule.JinjaLinterError.j2",
-        [("S0", 2), ("S3", 2)],
+        [("S0", 7), ("S3", 7)],
         [],
         [
             (
@@ -60,7 +71,7 @@
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_template_indentation_rule.missing_end_tag.j2",
-        [("S0", 1)],
+        [("S0", 6)],
         [],
         [
             (
@@ -73,7 +84,7 @@
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_template_indentation_rule.IndexError.j2",
-        [("S4", 2)],
+        [("S4", 7)],
         [],
         [
             # somehow this is not picked up when we should expect this log message (which can be seen in CLI)
@@ -89,37 +100,37 @@
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_statement_has_spaces_rule.j2",
-        [("S4", 1), ("S4", 2), ("S4", 3)],
+        [("S4", 6), ("S4", 7), ("S4", 8)],
         [],
         [],
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_template_no_tabs_rule.j2",
-        [("S5", 1)],
+        [("S5", 6)],
         [],
         [],
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_statement_delimiter_rule.j2",
-        [("S6", 1), ("S6", 3), ("S6", 5)],
+        [("S6", 6), ("S6", 8), ("S6", 10)],
         [],
         [],
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_template_single_statement_rule.j2",
-        [("S7", 1)],
+        [("S7", 6)],
         [],
         [],
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_variable_name_case_rule.j2",
-        [("V1", 1), ("V1", 2), ("V1", 3)],
+        [("V1", 6), ("V1", 7), ("V1", 8)],
         [],
         [],
     ),
     pytest.param(
         f"{TEST_DATA_DIR}/jinja_variable_name_format_rule.j2",
-        [("V2", 1)],
+        [("V2", 6)],
         [],
         [],
     ),
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 625eb02..c20a1f3 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 Tests for j2lint.utils.py
 """
diff --git a/tests/utils.py b/tests/utils.py
index 3f0d4d3..f8baa3b 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2021-2023 Arista Networks, Inc.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
 """
 utils.py - functions to assist with tests
 """