Testing: Compare XML instead of produces bytes

[SchoolGuy]

Fixes #69

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +1.92% (target: -1.00%)	✅ 81.82% (target: 50.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (a2fc56e)	3232	1874	57.98%
Head commit (2164f74)	3245 (+13)	1944 (+70)	59.91% (+1.92%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#70)	33	27	81.82%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[tiltingpenguin]

LGTM

[SchoolGuy]

This approach doesn't work at the moment since there is no concept of "map" available so it complains about unmatching elements.