include attach file test

[eromano]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x")

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation
• Other... Please describe:

What is the current behaviour? (You can also link to an open issue here)

What is the new behaviour?

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

[codecov-commenter]

Codecov Report

Merging #6102 into develop will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #6102   +/-   ##
========================================
  Coverage    76.27%   76.27%           
========================================
  Files          848      850    +2     
  Lines        18848    18885   +37     
  Branches      3720     3731   +11     
========================================
+ Hits         14376    14405   +29     
- Misses        3349     3354    +5     
- Partials      1123     1126    +3     

Impacted Files	Coverage Δ
lib/core/services/auth-guard-ecm.service.ts	78.57% <0.00%> (-21.43%)	⬇️
...ocess-filters/models/process-filter-cloud.model.ts	70.96% <0.00%> (-5.35%)	⬇️
...ers/components/edit-task-filter-cloud.component.ts	71.50% <0.00%> (-2.10%)	⬇️
...ices-cloud/src/lib/common/process-common.module.ts	100.00% <0.00%> (ø)
...lib/task/task-filters/task-filters-cloud.module.ts	100.00% <0.00%> (ø)
...mon/date-range-filter/date-range-filter.service.ts	86.95% <0.00%> (ø)
...es-cloud/src/lib/models/date-cloud-filter.model.ts	100.00% <0.00%> (ø)
lib/core/viewer/components/viewer.component.ts	71.72% <0.00%> (+0.11%)	⬆️
lib/core/viewer/components/img-viewer.component.ts	90.00% <0.00%> (+0.22%)	⬆️
.../task-list/components/task-list-cloud.component.ts	82.82% <0.00%> (+0.35%)	⬆️
... and 4 more

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