tests: build file paths with fileURLToPath so the suite runs on Windows (#230)

URL.pathname gives '/C:/dir%20with%20space/...' on Windows, so every test that
reads a model or fixture failed there (75 of 265). import() specifiers keep the
URL; disk reads take a filesystem path.

plugins/cli/tests/cli.test.js

@@ -12,6 +12,7 @@
 //     file is exit 1 and the other files still get their fins.
 //
 //   deno test -A plugins/cli/tests/
+import { fileURLToPath } from 'node:url';
 import { run, pose, rotationMatrix, parseArgs } from '../cli.js';
 import { computeFins, ENGINE_DEFAULTS } from '../../shared/engine/fins_entry.js';
 import { reportLine } from '../../shared/engine/report.js';
@@ -251,7 +252,7 @@ Deno.test('cli: the summary line says what was left unsupported, word for word w
     py = new Deno.Command('python3', {
       args: ['-c', 'import sys, json; sys.path.insert(0, sys.argv[1]); from supportfins_host import host_report; '
         + 'print(json.dumps([host_report(s) for s in json.loads(sys.argv[2])]))',
-      new URL('../../shared/py/', import.meta.url).pathname, JSON.stringify(samples)],
+      fileURLToPath(new URL('../../shared/py/', import.meta.url)), JSON.stringify(samples)],
       stdout: 'piped', stderr: 'piped',
     }).outputSync();
   } catch { return; }   // no python3 here: the JS line is still pinned above

tests/_util.js

@@ -2,8 +2,12 @@
 // --allow-read tests/` runs offline. The support engine is pure geometry, so
 // every test is: build some geometry, assert an invariant on the triangle soup.
 
-export const WEB = new URL('../web/', import.meta.url).pathname;
-export const MODELS = new URL('../prototype/stress/models/', import.meta.url).pathname;
+import { fileURLToPath } from 'node:url';
+
+// WEB is used in import(): keep it a URL string. MODELS is read from disk: make it a
+// filesystem path. URL.pathname is neither on Windows (leading slash, %20 for spaces).
+export const WEB = new URL('../web/', import.meta.url).href;
+export const MODELS = fileURLToPath(new URL('../prototype/stress/models/', import.meta.url));
 
 export const { buildTopology, analyze } = await import(`${WEB}overhangs.js`);
 export const fins = await import(`${WEB}fins.js`);

tests/calibrate.test.js

@@ -12,7 +12,7 @@ const DIR = new URL('../web/calibration/', import.meta.url);
 const PROTO = new URL('../prototype/calibration/', import.meta.url);
 
 // calibrate.js touches the DOM on import, so read its file list from the source
-const src = await Deno.readTextFile(`${WEB}ui/calibrate.js`);
+const src = await Deno.readTextFile(new URL('ui/calibrate.js', WEB));
 const files = [...src.matchAll(/file: '([^']+)'/g)].map((m) => m[1]);
 const est = JSON.parse(await Deno.readTextFile(new URL('coupons.json', DIR)));
 

tests/golden.test.js

@@ -19,9 +19,10 @@
 // (fins.js applyTunables), so reading defaults back from FIN / PAD / PROP would carry
 // one scene's material into the next -- the PETG scene did, into four PLA goldens.
 
+import { fileURLToPath } from 'node:url';
 import { r3, run } from './_scene.js';
 
-const DIR = new URL('./golden/', import.meta.url).pathname;
+const DIR = fileURLToPath(new URL('./golden/', import.meta.url));
 const UPDATE = Deno.env.get('UPDATE_GOLDEN') === '1';
 
 const SCENES = [

tests/raster.test.js

@@ -3,10 +3,11 @@
 // curved underside the tube route gave nothing), it never costs grip or wedges,
 // and `raster: false` builds the normal pass alone. The short-wall last resort
 // (fins/shortwalls.js) is off throughout: it fills what raster:false leaves bare.
+import { fileURLToPath } from 'node:url';
 import { buildTopology, analyze, fins, prop, assert, readSTL, rotX, loadModel } from './_util.js';
 import { gripRise } from '../web/prop/raster.js';
 
-const FIXTURES = new URL('./fixtures/', import.meta.url).pathname;   // gen_curved.py
+const FIXTURES = fileURLToPath(new URL('./fixtures/', import.meta.url));   // gen_curved.py
 const example = (name) => {
   const pos = readSTL(Deno.readFileSync(`${FIXTURES}${name}.stl`));
   return buildTopology({ getAttribute: (k) => (k === 'position' ? { array: pos } : null) });

tests/step.test.js

@@ -14,12 +14,13 @@
 // bracket next to a separate 10 mm peg.
 
 import { createRequire } from 'node:module';
+import { fileURLToPath } from 'node:url';
 import { WEB, fins, buildTopology, analyze, rotX, isClosed, assert, assertClose } from './_util.js';
 
 const { isStep, stepObjects, STEP_PARAMS } = await import(`${WEB}step.js`);
 
-const FIX = new URL('./fixtures/', import.meta.url).pathname;
-const OCCT = `${WEB}vendor/occt-import-js-0.0.23/`;
+const FIX = fileURLToPath(new URL('./fixtures/', import.meta.url));
+const OCCT = fileURLToPath(new URL('../web/vendor/occt-import-js-0.0.23/', import.meta.url));
 
 const occtimportjs = createRequire(import.meta.url)(`${OCCT}occt-import-js.js`);
 const occt = await occtimportjs({ wasmBinary: Deno.readFileSync(`${OCCT}occt-import-js.wasm`) });

tests/sway.test.js

@@ -13,7 +13,7 @@ import { block, blockTopo, buildTopology, analyze, fins, insideCount, isClosed,
 
 const topoOf = (pos) => buildTopology({ getAttribute: (k) => (k === 'position' ? { array: pos } : null) });
 
-const WEB = new URL('../web/', import.meta.url).pathname;
+const WEB = new URL('../web/', import.meta.url).href;
 const sway = await import(`${WEB}sway.js`);
 const { insidePart } = await import(`${WEB}inside.js`);