pgAdmin 4 commit: Improve code coverage and API test cases for the LANG

Improve code coverage and API test cases for the LANGUAGE module. Fixes #5050.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=30b4b5b3491dde285e3fc9bcaf90f8a5bee6245f
Author: Pradip Parkale <pradip(dot)parkale(at)enterprisedb(dot)com>

Modified Files
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docs/en_US/release_notes_4_18.rst | 1 +
.../databases/casts/tests/cast_test_data.json | 72 ++--
.../databases/casts/tests/test_cast_create.py | 2 +-
.../casts/tests/test_cast_create_get_functions.py | 3 +-
.../casts/tests/test_cast_create_get_type.py | 3 +-
.../databases/casts/tests/test_cast_delete.py | 3 +-
.../casts/tests/test_cast_delete_multiple.py | 3 +-
.../servers/databases/casts/tests/test_cast_get.py | 2 +-
.../tests/test_cast_get_dependencies_dependent.py | 4 +-
.../databases/casts/tests/test_cast_get_node.py | 3 +-
.../databases/casts/tests/test_cast_get_sql.py | 2 +-
.../servers/databases/casts/tests/test_cast_put.py | 2 +-
.../servers/databases/casts/tests/utils.py | 18 -
.../languages/tests/language_test_data.json | 441 +++++++++++++++++++++
.../databases/languages/tests/test_language_add.py | 76 ++--
.../languages/tests/test_language_delete.py | 44 +-
.../tests/test_language_delete_multiple.py | 5 +-
.../languages/tests/test_language_dependency.py | 65 +++
.../languages/tests/test_language_dependent.py | 64 +++
.../databases/languages/tests/test_language_get.py | 129 +++++-
.../test_language_get_function_and_template.py | 76 ++++
.../databases/languages/tests/test_language_put.py | 44 +-
.../databases/languages/tests/test_language_sql.py | 82 ++++
.../servers/databases/languages/tests/utils.py | 62 ++-
web/regression/python_test_utils/test_utils.py | 37 +-
25 files changed, 1090 insertions(+), 153 deletions(-)