0hmX/am3352

This code suite comprises TypeScript scripts that analyze, verify, and assemble complex DDR memory interface hardware, focusing on physical routing, via and pad placement, electrical clearance, and physical constraints, often involving precise geometric calculations and consistent provenance tracking.

Version
1.0.5
License
unset
Stars
0

tests/ddr-local-escape-contacts.test.ts

import {expect,test} from 'bun:test'
import {auditDdrLocalEscapeContacts} from '../scripts/audit-ddr-local-escape-contacts'
const layers=['top',...Array.from({length:8},(_,i)=>`inner${i+1}`),'bottom']
const trace={type:'pcb_trace',pcb_trace_id:'trace',source_trace_id:'net',route:[{route_type:'wire',x:-.4,y:-.4,layer:'top',width:.12,start_pcb_port_id:'port'},{route_type:'wire',x:0,y:0,layer:'top',width:.12},{route_type:'via',x:0,y:0,from_layer:'top',to_layer:'inner4',via_diameter:.4572,via_hole_diameter:.254},{route_type:'wire',x:0,y:0,layer:'inner4',width:.12},{route_type:'wire',x:1,y:0,layer:'inner4',width:.12}]}
const circuit=[{type:'source_trace',source_trace_id:'net',connected_source_port_ids:['source']},{type:'pcb_port',pcb_port_id:'port',source_port_id:'source'},{type:'pcb_smtpad',pcb_smtpad_id:'pad',pcb_port_id:'port',shape:'circle',radius:.2,x:-.4,y:-.4,layer:'top'},{type:'pcb_via',pcb_via_id:'via',pcb_trace_id:'trace',x:0,y:0,outer_diameter:.4572,hole_diameter:.254,layers},trace]
test('local escape owns only its source pad and incident retained via',()=>{
 const report=auditDdrLocalEscapeContacts(circuit,trace,[])
 expect(report.valid).toBe(true)
 expect(report.contacts.some(c=>c.kind==='source-pad')).toBe(true)
 expect(report.contacts.some(c=>c.kind==='retained-via')).toBe(true)
})
test('same-net extra pad is not a permitted local-escape shortcut',()=>{
 const report=auditDdrLocalEscapeContacts([...circuit,{type:'pcb_smtpad',pcb_smtpad_id:'other-pad',pcb_port_id:'port',shape:'circle',radius:.1,x:.6,y:0,layer:'inner4'}],trace,[])
 expect(report.valid).toBe(false)
 expect(report.contacts.some(c=>c.kind==='unexpected-own-copper-contact')).toBe(true)
})
test('allow a contiguous bend inside the retained annulus, reject later re-entry',()=>{
 const wire=(x:number,y:number)=>({route_type:'wire',x,y,layer:'inner4',width:.12})
 const launch={...trace,route:[...trace.route.slice(0,4),wire(.2,0),wire(.6,.4)]}
 expect(auditDdrLocalEscapeContacts([...circuit.filter(e=>e.type!=='pcb_trace'),launch],launch,[]).valid).toBe(true)
 const returning={...launch,route:[...launch.route,wire(.6,1),wire(-.6,1),wire(-.2,.6),wire(-.2,0)]}
 const report=auditDdrLocalEscapeContacts([...circuit.filter(e=>e.type!=='pcb_trace'),returning],returning,[])
 expect(report.valid).toBe(false)
 expect(report.contacts.some(c=>c.kind==='unexpected-own-copper-contact')).toBe(true)
})