Method updateFromContents

demo/src/features/testing.ts:95–137

* Parses the tests from the input text, and updates the tests contained * by this file to be those from the text,

(
      controller: vscode.TestController,
      content: string,
      item: vscode.TestItem
    )

     * by this file to be those from the text,
     */
    public updateFromContents(
      controller: vscode.TestController,
      content: string,
      item: vscode.TestItem
    ): void {
      const ancestors = [{ item, children: [] as vscode.TestItem[] }]
      const thisGeneration = generationCounter++
      this.didResolve = true

      const ascend = (depth: number) => {
        while (ancestors.length > depth) {
          const finished = ancestors.pop()!
          finished.item.children.replace(finished.children)
        }
      }

      parseMarkdown(content, {
        onTest: (range, a, operator, b, expected) => {
          const parent = ancestors[ancestors.length - 1]!
          const data = new TestCase(a, operator as Operator, b, expected, thisGeneration)
          const id = `${item.uri}/${data.getLabel()}`

          const tcase = controller.createTestItem(id, data.getLabel(), item.uri)
          testData.set(tcase, data)
          tcase.range = range
          parent.children.push(tcase)
        },

        onHeading: (range, name, depth) => {
          ascend(depth)
          const parent = ancestors[ancestors.length - 1]!
          const id = `${item.uri}/${name}`

          const thead = controller.createTestItem(id, name, item.uri)
          thead.range = range
          testData.set(thead, new TestHeading(thisGeneration))
          parent.children.push(thead)
          ancestors.push({ item: thead, children: [] })
        }
      })

      ascend(0) // finish and assign children for all remaining items
    }
  }

  class TestHeading {