simple test

const xRel001 = -20
const xRel002 = xRel001-50

src/lang/queryAst.test.ts

@@ -1,6 +1,7 @@
 import { parse, recast, initPromise } from './wasm'
 import {
   findAllPreviousVariables,
+  findUnusedVariables,
   isNodeSafeToReplace,
   isTypeInValue,
   getNodePathFromSourceRange,
@@ -60,6 +61,22 @@ const variableBelowShouldNotBeIncluded = 3
   })
 })
 
+describe('findUnusedVariables', () => {
+  it('should find unused vairiables', () => {
+    // example code
+    const code = `
+      const xRel001 = -20
+      const xRel002 = xRel001-50
+    `
+    // parse into ast
+    const ast = parse(code)
+    // find unused variables
+    const unusedVariables = findUnusedVariables(ast)
+    // check wether unused variables match the expected result
+    expect(unusedVariables.map((node) => node.id.name)).toEqual(['xRel002'])
+  })
+})
+
 describe('testing argIsNotIdentifier', () => {
   const code = `const part001 = startSketchOn('XY')
 |> startProfileAt([-1.2, 4.83], %)