12 articles published this month.
Units that differ by a thousand, buffers that live in another file, quantized vertices, and a node hierarchy 24 levels deep. What to check before a GLB hits the GPU.
Testaroo · Guide · Advanced · v2026.09
Read the post →Arabic has six plural forms, Polish has four, and most i18n bugs are a missing one. Eleven formats, the plural rules that break them, and what RTL actually requires.
Testaroo · Guide · Intermediate · v2026.09
Read the post →Obfuscated fonts, an NCX that disagrees with the nav document, vertical Japanese, and a spine pointing at a file that is not there. The ebook cases worth owning.
Testaroo · Guide · Advanced · v2026.09
Read the post →Tokenisation that drops the term someone typed, ranking that buries the exact match, and zero results with no way out. The failures a search box hides.
Testaroo · Guide · Intermediate · v2026.09
Read the post →Nested MIME, four charsets in one mailbox, authentication headers that pass and fail, and a bounce that looks like a reply. Test your parser against real message shapes.
Testaroo · Guide · Intermediate · v2026.09
Read the post →Variable axes, COLR palettes, metrics that disagree, and a deliberately broken checksum. The font cases that break renderers, subsetters and export pipelines.
Testaroo · Guide · Advanced · v2026.09
Read the post →Antimeridian crossings, unnormalised longitudes, silent CRS assumptions, and a shapefile that is really five files. Test the cases that break importers.
Testaroo · Guide · Intermediate · v2026.09
Read the post →Extractors fail on codecs they never linked, filenames they cannot decode, and nesting they never expected. Here is how to find out before your users do.
Testaroo · Guide · Intermediate · v2026.09
Read the post →Assemble a compact editing regression pack from six-role audio and video workflow kits, expected analyses, controlled failures, and local browser-generated controls.
Testaroo · Guide · Intermediate · v2026.08
Read the post →Turn a creator brief into a repeatable AI workflow test with provider-neutral plans, bound media inputs, expected outputs, and an explicit evaluation rubric.
Testaroo · Workflow · Intermediate · v2026.08
Read the post →Build synthetic media fixtures from versioned recipes, understand byte-stable versus content-stable exports, and verify every artifact without uploading source media.
Testaroo · Workflow · Intermediate · v2026.08
Read the post →Use one canonical field contract to test browser forms, paged layouts, structured values, field-data exchange, escaping, and round-trip imports across six form families.
Testaroo · Workflow · Intermediate · v2026.08
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