budibase/packages/string-templates/test/hbsToJs.spec.ts

import { convertToJS } from "../src/index"

function checkLines(response: string, lines: string[]) {
  const toCheck = response.split("\n")
  let count = 0
  for (let line of lines) {
    expect(toCheck[count++]).toBe(line)
  }
}

describe("Test that the string processing works correctly", () => {
  it("should convert string without HBS", () => {
    const response = convertToJS("Hello my name is Michael")
    expect(response).toBe("return `Hello my name is Michael`;")
  })

  it("basic example with square brackets", () => {
    const response = convertToJS("{{ [query] }}")
    checkLines(response, ['const var1 = $("[query]");', "return `${var1}`;"])
  })

  it("handle properties", () => {
    const response = convertToJS("{{ [query].id }}")
    checkLines(response, ['const var1 = $("[query].id");', "return `${var1}`;"])
  })

  it("should convert some basic HBS strings", () => {
    const response = convertToJS("Hello {{ name }}, welcome to {{ company }}!")
    checkLines(response, [
      'const var1 = $("name");',
      'const var2 = $("company");',
      "return `Hello ${var1}, welcome to ${var2}`;",
    ])
  })

  it("should handle many square brackets in helpers", () => {
    const response = convertToJS("Hello {{ avg [user].[_id] [user].[_rev] }}")
    checkLines(response, [
      'const var1 = helpers.avg($("[user].[_id]"), $("[user].[_rev]"));',
      "return `Hello ${var1}`;",
    ])
  })

  it("should handle one of the examples (after)", () => {
    const response = convertToJS("{{ after [1, 2, 3] 1}}")
    checkLines(response, [
      "const var1 = helpers.after([1, 2, 3], 1);",
      "return `${var1}`;",
    ])
  })

  it("should handle one of the examples (equalsLength)", () => {
    const response = convertToJS("{{equalsLength '[1,2,3]' 3}}")
    checkLines(response, [
      "const var1 = helpers.equalsLength('[1,2,3]', 3);",
      "return `${var1}`;",
    ])
  })

  it("should handle one of the examples (pluck)", () => {
    const response = convertToJS("{{pluck [{ 'name': 'Bob' }] 'name' }}")
    checkLines(response, [
      "const var1 = helpers.pluck([{ 'name': 'Bob' }], 'name');",
      "return `${var1}`;",
    ])
  })

  it("should handle sorting an array", () => {
    const response = convertToJS("{{ sort ['b', 'a', 'c'] }}")
    checkLines(response, [
      "const var1 = helpers.sort(['b', 'a', 'c']);",
      "return `${var1}`;",
    ])
  })

  it("should handle a helper block", () => {
    const response = convertToJS("This is the average: {{ avg array }}")
    checkLines(response, [
      'const var1 = helpers.avg($("array"));',
      "return `This is the average: ${var1}`;",
    ])
  })

  it("should handle multi-variable helper", () => {
    const response = convertToJS(
      "This is the average: {{ join ( avg val1 val2 val3 ) }}"
    )
    checkLines(response, [
      'const var1 = helpers.join(helpers.avg($("val1"), $("val2"), $("val3")));',
      "return `This is the average: ${var1}`;",
    ])
  })

  it("should handle a complex statement", () => {
    const response = convertToJS(
      "This is the average: {{ join val1 ( avg val2 val3 val4 ) }}"
    )
    checkLines(response, [
      'const var1 = helpers.join($("val1"), helpers.avg($("val2"), $("val3"), $("val4")));',
      "return `This is the average: ${var1}`;",
    ])
  })

  it("should handle square brackets", () => {
    const response = convertToJS("This is: {{ [val thing] }}")
    checkLines(response, [
      'const var1 = $("[val thing]");',
      "return `This is: ${var1}`;",
    ])
  })

  it("should handle square brackets with properties", () => {
    const response = convertToJS("{{ [user].[_id] }}")
    checkLines(response, [
      'const var1 = $("[user].[_id]");',
      "return `${var1}`;",
    ])
  })

  it("should handle multiple complex statements", () => {
    const response = convertToJS(
      "average: {{ avg val1 ( abs val2 ) }} add: {{ add 1 2 }}"
    )
    checkLines(response, [
      'const var1 = helpers.avg($("val1"), helpers.abs($("val2")));',
      "const var2 = helpers.add(1, 2);",
      "return `average: ${var1} add: ${var2}`;",
    ])
  })

  it("should handle uuids", () => {
    const response = convertToJS("This is: {{ uuid }}")
    checkLines(response, [
      "const var1 = helpers.uuid();",
      "return `This is: ${var1}`;",
    ])
  })
})