In tests, medium size sources are bigger than large size sources

```smalltalk
testInstance := FamixRepDetectorBenchmarkTest new.
medium := testInstance sampleMediumSizeSources.
large := testInstance sampleLargeSizeSources.

medium sizeInMemory < large sizeInMemory. "false"
medium size < large size. "false"
medium flatten size < large flatten size. "false"
```