fix(plugin-chart-echarts): show zero value in tooltip #21296
Merged
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SUMMARY
Currently only truthy values are shown on the tooltip of the ECharts plugin, causing zeros to be removed.
The PR fixes the bug and adds unit tests for both extracting the series and formatting (logic of both have been updated). In addition the tests are refactored to the preferred single test format (the refactoring changes can best be seen with "Hide whitespace changes").
AFTER
Now zero is shown on the tooltip; see the series
SUM(0)
:BEFORE
Previously only truthy values were shown, i.e. excluding zero:
TESTING INSTRUCTIONS
ADDITIONAL INFORMATION