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Merge pull request #6535 from davidhorstmann-arm/change-test-templating-syntax

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Change test templating syntax to be valid C
This commit is contained in:
Gilles Peskine
2022-11-10 12:05:55 +01:00
committed by GitHub
parent 9a571ddfd9 360f8e4429
commit b4eb444a5c
2 changed files with 72 additions and 50 deletions
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78
tests/scripts/generate_test_code.py
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@@ -126,33 +126,39 @@ code that is generated or read from helpers and platform files.
This script replaces following fields in the template and generates
the test source file:
$test_common_helpers <-- All common code from helpers.function
is substituted here.
$functions_code <-- Test functions are substituted here
from the input test_suit_xyz.function
file. C preprocessor checks are generated
for the build dependencies specified
in the input file. This script also
generates wrappers for the test
functions with code to expand the
string parameters read from the data
file.
$expression_code <-- This script enumerates the
expressions in the .data file and
generates code to handle enumerated
expression Ids and return the values.
$dep_check_code <-- This script enumerates all
build dependencies and generate
code to handle enumerated build
dependency Id and return status: if
the dependency is defined or not.
$dispatch_code <-- This script enumerates the functions
specified in the input test data file
and generates the initializer for the
function table in the template
file.
$platform_code <-- Platform specific setup and test
dispatch code.
__MBEDTLS_TEST_TEMPLATE__TEST_COMMON_HELPERS
All common code from helpers.function
is substituted here.
__MBEDTLS_TEST_TEMPLATE__FUNCTIONS_CODE
Test functions are substituted here
from the input test_suit_xyz.function
file. C preprocessor checks are generated
for the build dependencies specified
in the input file. This script also
generates wrappers for the test
functions with code to expand the
string parameters read from the data
file.
__MBEDTLS_TEST_TEMPLATE__EXPRESSION_CODE
This script enumerates the
expressions in the .data file and
generates code to handle enumerated
expression Ids and return the values.
__MBEDTLS_TEST_TEMPLATE__DEP_CHECK_CODE
This script enumerates all
build dependencies and generate
code to handle enumerated build
dependency Id and return status: if
the dependency is defined or not.
__MBEDTLS_TEST_TEMPLATE__DISPATCH_CODE
This script enumerates the functions
specified in the input test data file
and generates the initializer for the
function table in the template
file.
__MBEDTLS_TEST_TEMPLATE__PLATFORM_CODE
Platform specific setup and test
dispatch code.
"""
@@ -974,11 +980,27 @@ def write_test_source_file(template_file, c_file, snippets):
:param snippets: Generated and code snippets
:return:
"""
# Create a placeholder pattern with the correct named capture groups
# to override the default provided with Template.
# Match nothing (no way of escaping placeholders).
escaped = "(?P<escaped>(?!))"
# Match the "__MBEDTLS_TEST_TEMPLATE__PLACEHOLDER_NAME" pattern.
named = "__MBEDTLS_TEST_TEMPLATE__(?P<named>[A-Z][_A-Z0-9]*)"
# Match nothing (no braced placeholder syntax).
braced = "(?P<braced>(?!))"
# If not already matched, a "__MBEDTLS_TEST_TEMPLATE__" prefix is invalid.
invalid = "(?P<invalid>__MBEDTLS_TEST_TEMPLATE__)"
placeholder_pattern = re.compile("|".join([escaped, named, braced, invalid]))
with open(template_file, 'r') as template_f, open(c_file, 'w') as c_f:
for line_no, line in enumerate(template_f.readlines(), 1):
# Update line number. +1 as #line directive sets next line number
snippets['line_no'] = line_no + 1
code = string.Template(line).substitute(**snippets)
template = string.Template(line)
template.pattern = placeholder_pattern
snippets = {k.upper():v for (k, v) in snippets.items()}
code = template.substitute(**snippets)
c_f.write(code)