module Tests.Path

open NUnit.Framework

open Pentole
open Pentole.Assert
open Pentole.Path

[<Test>]
let constructor_test () =
    "/" |> Path.of_string |> Result.isOk |> isTrue
    '\000' |> string |> Path.of_string |> Result.isOk |> isFalse

[<Test>]
let absolute_test () =


    let is_absolute (p: IPath) =
        p.string_value 
        |> System.IO.Path.IsPathFullyQualified 

    let test (s:string) =
        s
        |> Path.of_string
        |> Result.map is_absolute
             
    "/"   |>   test   |> okEquals true
    "//"  |>   test   |> okEquals true
    "tmp/" |> test |> okEquals false
    "tmp"  |> test |> okEquals false
    "~"   |>   test   |> okEquals false
    "."   |>   test   |> okEquals false
    ".."  |>   test   |> okEquals false
    "../" |>   test   |> okEquals false
    "../../" |> test |> okEquals false
    "..a" |>   test   |> okEquals false
    ":a"  |>   test   |> okEquals false
    "\\a" |>   test   |> okEquals false
    "/etc/../" |>   test   |> okEquals true
    "/tmp/Char:é" |>   test   |> okEquals true

[<Test>]
let resolve_test () =
    let test (s:string) =
        s
        |> Path.of_string
        |> Result.map FileSystem.resolve
        |> Result.Unsafe.get
    let p (n: string ) = Path.of_string n |> Result.Unsafe.get

    "/"            |> test |> okEquals (p "/")
    "/etc/../"     |> test |> okEquals (p "/")
    "/etc/../etc"  |> test |> okEquals (p "/etc")

[<Test>]
let equality_test () =
    let p (n: string ) = Path.of_string n |> Result.Unsafe.get
    areEqual (p "/etc") (p "/etc/")
    areNotEqual (p "etc") (p "/etc/")
    areNotEqual (p "etc") (p "/etc")
    areEqual (Path.of_string "/tmp" ) ( Path.of_string "/tmp/")
    isTrue (Path.of_string "/tmp" = Path.of_string "/tmp/")
    
[<Test>]
let parent_test () =
    let p (n: string ) = Path.of_string n |> Result.Unsafe.get
    let test (s:string) =
        s
        |> Path.of_string
        |> Result.Unsafe.get
        |> parent

    "/"            |> test |> areEqual (p "/")
    "/etc/"     |> test |> areEqual (p "/")
    "/etc/conf"     |> test |> areEqual (p "/etc")
    "/etc/../etc"  |> test |> areEqual (p "/etc/../")
    "etc/../etc"  |> test |> areEqual (p "etc/../")

[<Test>]
let exitsts_test () =
    let p (n: string ) = Path.of_string n |> Result.Unsafe.get
    FileSystem.exists (p "/tmp/") |> isTrue
    FileSystem.exists (p "/IHOPE_this_DOESNT_exist/") |> isFalse