test: add test case based on celestia-node usage

[rootulp]

Closes #238

cc: @walldiss @Wondertan

[codecov]

Codecov Report

Merging #239 (604ae0a) into main (658af68) will not change coverage.
The diff coverage is n/a.

❗ Current head 604ae0a differs from pull request most recent head 11bb1c0. Consider uploading reports for the commit 11bb1c0 to get more accurate results

@@           Coverage Diff           @@
##             main     #239   +/-   ##
=======================================
  Coverage   78.30%   78.30%           
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  Files           7        7           
  Lines         553      553           
=======================================
  Hits          433      433           
  Misses         73       73           
  Partials       47       47           

[rootulp]

Considered refactoring to

	for row := 0; row < edsWidth/2; row++ {
		for col := 0; col < edsWidth/2; col++ {
			err = eds.SetCell(uint(row), uint(col), exampleEds.GetCell(uint(row), uint(col)))
			require.NoError(t, err)
		}
	}

but I think the existing implementation is easier to read.

[staheri14]

LGTM!