Image comparing tests for ImageExport
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- Dominant language
- F#
- Stars
- 860
- Forks
- 99
- Avg merge
- 22m
- Merged PRs (30d)
- 1
Description
There's Plotly.NET.Export which exports images, for example, into base64. However testing it on exact matches doesn't work well, after all, there are multiple ways the same image can be encoded with jpg or png.
So the idea here is to convert it to an image and compare pixel by pixel against a model one. If the deviation on average isn't big, then the test is considered to pass.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating Plotly.NET.Export and the existing image export tests. Read how exported base64 images are decoded, then determine how a reference image can be compared pixel by pixel with an average deviation threshold. Done means image export tests accept equivalent encodings while detecting meaningful visual differences.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- fsharp
- Domain
- data-visualization, testing-qa
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100