adjust method signatures in Encryption.php

[phil-davis]

Description

Update the wrapSource and loadContext methods so that the default parameters match the parent class in icewind/streams

This makes the encryption unit tests pass. See demonstration PR owncloud/encryption#199 and drone result https://drone.owncloud.com/owncloud/encryption/1264/4/4

phpdbg -qrr -d memory_limit=4096M -d zend.enable_gc=0 "../../lib/composer/bin/phpunit" --configuration ./phpunit.xml --testsuite unit
PHPUnit 8.5.4 by Sebastian Bergmann and contributors.

Runtime:       PHPDBG 7.2.27-6+ubuntu18.04.1+deb.sury.org+1
Configuration: /var/www/owncloud/server/apps/encryption/phpunit.xml

a test string for helloWelcome to your ownCloud account!

This is just an example file for developers and git users. 
The packaged and released versions will come with better examples.

a test string for world.a foo testLets modify again3Welcome to your ownCloud account!

This is just an example file for developers and git users. 
The packaged and released versions will come with better examples.

a test string for world.a foo testLets modify again3Welcome to your ownCloud account!

This is just an example file for developers and git users. 
The packaged and released versions will come with better examples.

a test string for world.............................................................  63 / 251 ( 25%)
............................................................... 126 / 251 ( 50%)
............................................................... 189 / 251 ( 75%)
..............................................................  251 / 251 (100%)

Time: 11.08 seconds, Memory: 504.00 MB

OK (251 tests, 725 assertions)

Note: these adjustments are part of implementing #37249 which already has a changelog entry.

Related Issue

• part of Code needs updating due to core icewind/streams 0.7.2 encryption#198

How Has This Been Tested?

Local run of encryption unit tests

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:
• Changelog item, see TEMPLATE

[codecov]

Codecov Report

Merging #37376 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master   #37376   +/-   ##
=========================================
  Coverage     64.57%   64.57%           
  Complexity    19220    19220           
=========================================
  Files          1268     1268           
  Lines         75105    75105           
  Branches       1331     1331           
=========================================
  Hits          48496    48496           
  Misses        26217    26217           
  Partials        392      392           

Flag	Coverage Δ	Complexity Δ
#javascript	54.14% <ø> (ø)	0.00 <ø> (ø)
#phpunit	65.72% <100.00%> (ø)	19220.00 <6.00> (ø)

Impacted Files	Coverage Δ	Complexity Δ
lib/private/Files/Stream/Encryption.php	93.98% <100.00%> (ø)	56.00 <6.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 12d9bc3...c0f238c. Read the comment docs.

[codecov]

Codecov Report

Merging #37376 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master   #37376   +/-   ##
=========================================
  Coverage     64.57%   64.57%           
  Complexity    19220    19220           
=========================================
  Files          1268     1268           
  Lines         75105    75105           
  Branches       1331     1331           
=========================================
  Hits          48496    48496           
  Misses        26217    26217           
  Partials        392      392           

Flag	Coverage Δ	Complexity Δ
#javascript	54.14% <ø> (ø)	0.00 <ø> (ø)
#phpunit	65.72% <100.00%> (ø)	19220.00 <6.00> (ø)

Impacted Files	Coverage Δ	Complexity Δ
lib/private/Files/Stream/Encryption.php	93.98% <100.00%> (ø)	56.00 <6.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 12d9bc3...c0f238c. Read the comment docs.