Start working on tests.

packages/js/test/index.js

@@ -0,0 +1,23 @@
+import { createLineData, parseLine, useDocument } from '@terrace/core'
+import { createStdinReader } from '@terrace/core/readers/node-readline'
+
+const testName = process.argv[2]
+
+
+const tests = {
+  'linedata:basic': async () => {
+    const { level, line, head, tail, next } = useDocument(createStdinReader())
+    while(await next()) {
+      console.log(`level: ${level()} | head: ${head()} | tail: ${tail()} | line: ${line()}`)
+    }
+  },
+  'linedata:tabs': async () => {
+    const { level, line, head, tail, next } = useDocument(createStdinReader(), '\t')
+    while(await next()) {
+      console.log(`level: ${level()} | head: ${head()} | tail: ${tail()} | line: ${line()}`)
+    }
+  }
+}
+
+const test = tests[testName]
+await test()