MapColonies / shigola
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coverage: 48.261% (+0.09%) from 48.173%
57a221c73

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test(cite): re-base the OGC conformance suite onto db-side MVT (MAPCO-11481) (#8)

* test(cite): re-base the conformance suite onto db-side mvt

The OGC CITE run was configured entirely against a GeoPackage fixture, which
made the project's only external conformance evidence an invisible dependency of
the GeoPackage provider: removing the provider would have deleted the evidence
and said nothing. The fixture now serves the same three Athens layers out of the
PostGIS fixture through ST_AsMVT, so nothing in the conformance path is
file-backed.

The workflow provisions the fixture with the same `docker compose up -d` plus
`docker wait migration` gate on_pr_push.yml uses, and builds with CGO_ENABLED=0
and -tags noGpkgProvider so that "conformance passes with no GeoPackage present"
is a property of the binary rather than of the config. Path triggers swap
provider/gpkg/** for provider/postgis/**, testdata/postgis/** and
docker-compose.yml; the OGC and tiling-scheme triggers are untouched.

Two things are deliberate and are argued in the files:

- The layer SQL passes !BBOX! to ST_AsMVTGeom unwrapped. That is exact for
  WorldCRS84Quad, whose tile grid is linear in lon/lat, and out by about half a
  unit in 4096 for WebMercatorQuad at zoom 14. The transform-to-3857 pattern the
  provider README documents is exact the other way round and degenerate near the
  poles. One SQL string cannot be exact for both, because nothing in it says
  which grid the request came from. Hence the narrow 13-15 zoom window: the map
  does not advertise tiles it would render visibly wrong.
- The WorldCRS84Quad tile moves from row 4742 to 4740. A WorldCRS84Quad tile is
  half the width and a bit over half the height of a WebMercatorQuad one, so
  4742 holds no places_points rows -- and ST_AsMVT emits no layer at all for a
  layer with no rows, which the suite reports as a clean pass. 4740 is the
  nearest tile in the same column holding all three layers.

Verified: both schemes rep... (continued)

9841 of 20391 relevant lines covered (48.26%)

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Builds Branch Commit Type Ran Committer Via Coverage
57a221c73 master test(cite): re-base the OGC conformance suite onto db-side MVT (MAPCO-11481) (#8) * test(cite): re-base the conformance suite onto db-side mvt The OGC CITE run was configured entirely against a GeoPackage fixture, which made the project's only e... push web-flow github
48.26
85842fb54 master test(ci): record the coverage baseline and gate CI on a floor (MAPCO-11480) (#7) * test(ci): add the coverage floor tool First half of the coverage gate: the profile parser, the baseline format and the floor comparison, with tests. The measured ... push web-flow github
48.17
cafc4f691 master feat(server): remove the embedded viewer (MAPCO-11482) (#6) Shigola serves tiles, not a map. The viewer route, the embedded UI assets, the build tags that excluded them, and the viewer half of the observability interface all go. This is sequence... push web-flow github
47.74
2bc2be592 master test(postgis): carry athens in the fixture and rename it to shigola (#5) * test(postgis): carry athens in the fixture and rename it to shigola The fixture database name lives inside the dump, not in references to it: a pg_dump custom-format arch... push web-flow github
47.68
abbb16285 master Delete review.md push web-flow github
47.66
e792b9141 master fix: land the stranded dependency-update branch (MAPCO-11478) (#4) * fix: make pull request workflow pass Update vulnerable dependencies and make the local CI workflow resilient to missing credentials and occupied ports. Replace brittle MVT byte... push web-flow github
47.66
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