grater: Enhance test coverage and cover various failing paths.

[amisha-chhajed]

Component(s)

No response

Enhancement Proposal

Tests for grater can be improved by,

• Adding more tests to cover all failing paths.
• Writing short tests using mockdockercontainer to run tests without a docker daemon running.

Motivation

N/A

Tip

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[i-OmSharma]

/assign