Memory exhausted while running PHPUnit tests for oik on s.b/wordpress

[bobbingwide]

When I PHPUnit tested oik v4.8.1 it worked fine.
Re-running the tests today I got.

PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 83395048 bytes)

The memory limit set in wp-config.php was 512M. I upped it to 1024M but still got the problem.
The trace output indicate that the memory limit had been reduced from 1024M to 256M
But I dont know where this was done.

Workaround

Turn off CLI tracing before running the PHPUnit tests.

[bobbingwide]

Explanation

• The PHPUnit test method Tests_oik_bob_bing_wide::test_bw_wp_v0_my sets the memory limit to "256M"
• It doesn't reset it to the original value
• When CLI tracing is enable the trace output of the wpdb object in BW_UnitTestCase::rollback_transaction can be very large.
• Memory is exceeded during the print_r() logic

Problem resolution

• Find the original memory limit at the start of the test.
• Reset the original memory limit at the end of the test.