All JS and Python tests passing.

packages/python/test/index.py

@@ -6,12 +6,17 @@ sys.path.insert(1, os.path.join(sys.path[0], '..'))
 from parser import createLineData, parseLine
 
 def next():
-  return sys.stdin.readline().rstrip('\n')
+  # For blank lines, readline will return a newline.
+  # For no result, readline will return a string of length 0.
+  line = sys.stdin.readline()
+  # Since we strip trailing newlines resulting in an empty string for empty lines,
+  # return None if there actually is no result.
+  return line.rstrip('\n') if len(line) > 0 else None
 
 def linedata_basic ():
   lineData = createLineData('')
 
-  while l := next():
+  while (l := next()) != None:
     lineData['line'] = l
     parseLine(lineData)
     print("| level {level} | indent {indent} | offsetHead {offsetHead} | offsetTail {offsetTail} | line {line} |".format(
@@ -21,7 +26,7 @@ def linedata_basic ():
 def linedata_tabs ():
   lineData = createLineData('', '\t')
 
-  while l := next():
+  while (l := next()) != None:
     lineData['line'] = l
     parseLine(lineData)
     print("| level {level} | indent {indent} | offsetHead {offsetHead} | offsetTail {offsetTail} | line {line} |".format(
@@ -31,10 +36,10 @@ def linedata_tabs ():
 def linedata_head_tail ():
   lineData = createLineData('')
 
-  while l := next():
+  while (l := next()) != None:
     lineData['line'] = l
     parseLine(lineData)
-    head = lineData['line'][lineData['offsetHead']:lineData['offsetTail']] if len(lineData['line']) > lineData['offsetTail'] else ''
+    head = lineData['line'][lineData['offsetHead']:lineData['offsetTail']] if len(lineData['line']) > lineData['offsetHead'] else ''
     tail = lineData['line'][lineData['offsetTail'] + 1:] if len(lineData['line']) > lineData['offsetTail'] + 1 else ''
 
     print("| head {head} | tail {tail} |".format(

test/helpers.js

@@ -4,7 +4,7 @@ import { execSync } from 'node:child_process'
 import { useDocument } from '@terrace/core'
 import { createFileReader } from '@terrace/core/readers/node-readline'
 
-async function loadTests(path) {
+export async function loadTestMap(path) {
   const { next, level, head, tail, line, match } = useDocument(createFileReader(path))
 
   const descriptions = {}
@@ -58,6 +58,20 @@ async function loadTests(path) {
   return descriptions
 }
 
+export function defineTests(testMap) {
+  for (const [name, tests] of Object.entries(testMap)) {
+    describe(name, () => {
+      for (const test of tests) {
+        test.packages.forEach(pkg => {
+          it(`${pkg}: ${test.it}`, async () => {
+            expect(await callTest(pkg, test.key, test.input)).to.equal(test.output)
+          })
+        })
+      }
+    })
+  }
+}
+
 function callTest(pkg, name, input) {
   return new Promise((resolve, reject) => {
     const stdout = execSync(`npm run --silent test ${name}`, {
@@ -69,17 +83,3 @@ function callTest(pkg, name, input) {
     resolve(stdout.toString().trim())
   })
 }
-
-const descriptions = await loadTests('./tests.tce')
-
-for (const [name, tests] of Object.entries(descriptions)) {
-  describe(name, () => {
-    for (const test of tests) {
-      test.packages.forEach(pkg => {
-        it(`${pkg}: ${test.it}`, async () => {
-          expect(await callTest(pkg, test.key, test.input)).to.equal(test.output)
-        })
-      })
-    }
-  })
-}

test/lineData.test.js

@@ -0,0 +1,3 @@
+import { loadTestMap, defineTests } from './helpers.js'
+
+defineTests(await loadTestMap('./lineData.test.tce'))