Header-value is parsed as integer and overflows

[kalehmann]

My environment:

os: debian 9 x86_64
linux: 4.9.0-5-amd64
php-version: 7.0.27-0+deb9u1
behatch/contexts: dev-master (version: 32dcd9b)

Steps to reproduce

Add a simple feature using the Behatch\Context\RestContext:

Feature: Having a header with a numeric value
  Scenario: Having a header with a numeric value
    Given I add "xxx" header equal to "100000000000000000000"
    When I send a GET request to "http://192.168.178.161"

Expected behavior

Behatch sends a request with a header named "xxx" with the value "100000000000000000000"

Actual behavior (checked with wireshark)

Behatch sends a request with the following header:
xxx: 9223372036854775807

Notes

The value behatch actually sends is 9,223,372,036,854,775,807, which is the maximum integer value for 64-bit php (see ). The problem seems to be, that a string containing numbers gets casted to an integer.

[kalehmann]

The automatic casting to integer values happens in src/Context/BaseContext lines 18-31.
A workaround would be checking if intval($count) return PHP_INT_MAX

[kalehmann]

Created pull request #237