//
// Stencil
// Copyright © 2022 Stencil
// MIT Licence
//

import PathKit
import Spectre
import Stencil
import XCTest

final class TemplateLoaderTests: XCTestCase {
  func testFileSystemLoader() {
    let path = Path(#file as String) + ".." + "fixtures"
    let loader = FileSystemLoader(paths: [path])
    let environment = Environment(loader: loader)

    it("errors when a template cannot be found") {
      try expect(try environment.loadTemplate(name: "unknown.html")).toThrow()
    }

    it("errors when an array of templates cannot be found") {
      try expect(try environment.loadTemplate(names: ["unknown.html", "unknown2.html"])).toThrow()
    }

    it("can load a template from a file") {
      _ = try environment.loadTemplate(name: "test.html")
    }

    it("errors when loading absolute file outside of the selected path") {
      try expect(try environment.loadTemplate(name: "/etc/hosts")).toThrow()
    }

    it("errors when loading relative file outside of the selected path") {
      try expect(try environment.loadTemplate(name: "../LoaderSpec.swift")).toThrow()
    }
  }

  func testDictionaryLoader() {
    let loader = DictionaryLoader(templates: [
      "index.html": "Hello World"
    ])
    let environment = Environment(loader: loader)

    it("errors when a template cannot be found") {
      try expect(try environment.loadTemplate(name: "unknown.html")).toThrow()
    }

    it("errors when an array of templates cannot be found") {
      try expect(try environment.loadTemplate(names: ["unknown.html", "unknown2.html"])).toThrow()
    }

    it("can load a template from a known templates") {
      _ = try environment.loadTemplate(name: "index.html")
    }

    it("can load a known template from a collection of templates") {
      _ = try environment.loadTemplate(names: ["unknown.html", "index.html"])
    }
  }
}