Visualization of single band fails

[Martin Danner]

QGIS/EnMAP-Box3 crashes when the user tries to create a map from a single band.

• Add Raster dataset
• Select “Bands”
• Right-click on e.g. band 2 → Open in New Map → Python-Error

The stacktrace is not accessible, as the window freezes immediately.

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[Benjamin Jakimow]

this is hard to debug

[Benjamin Jakimow]

resolves #478 (visualization of single band fails)

Signed-off-by: jakimowb [e-mail]

→ <<cset 8a6e860b12c5>>

[Benjamin Jakimow]

generated tests/testdata/init.py refactored some unit tests created test_issue_478.py addresses #478 created test_issue_672.py addresses #672 created test_issue_711.py addresses #711

→ <<cset 78b9dc55de78>>