## CSS validator -- exhaustive edge-case tests.
## Auto-generated. Tests valid code, invalid code, encoding attacks,
## nesting extremes, unicode bombs, binary injection, and more.

import std/[unittest, strutils, strformat, json]
import ../src/nimcheck

proc checkValid(result: ValidationResult, context: string = "") =
  if result.errors.len > 0:
    var msg = &"Expected valid, got {result.errors.len} error(s)"
    if context.len > 0: msg.add(&" [{context}]")
    for e in result.errors: msg.add(&"\n  [{e.code}] {e.message}")
    doAssert false, msg

proc checkInvalid(result: ValidationResult, context: string = "") =
  if result.errors.len == 0:
    doAssert false, &"Expected errors, got none [{context}]"

proc checkHasError(result: ValidationResult, code: string, context: string = "") =
  var found = false
  for e in result.errors:
    if e.code == code: found = true
  if not found:
    var codes: seq[string] = @[]
    for e in result.errors: codes.add(e.code)
    let codesJoined = codes.join(", ")
    doAssert false, "Expected error code '" & code & "', got " & codesJoined & " [" & context & "]"

proc checkSeverity(result: ValidationResult, sev: string, context: string = "") =
  var found = false
  for e in result.errors:
    if $e.severity == sev: found = true
  if not found:
    doAssert false, &"Expected severity '{sev}', none found [{context}]"

suite "CSS Exhaustive Tests":

  test "basic valid CSS":
    let src = "body { color: red; background: blue; }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "unclosed string":
    let src = "body { content: \"hello; }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "media query":
    let src = "@media (max-width: 600px) { .class { display: none; } }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "unclosed block comment":
    let src = "body { color: red; /* unclosed }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "empty source":
    let src = ""
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "keyframes":
    let src = "@keyframes slide { from { left: 0; } to { left: 100px; } }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "unicode in string":
    let src = "body::before { content: \"caf\u00e9\"; }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "nested rules":
    let src = ".parent { .child { color: red; } }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "multiple selectors":
    let src = "h1, h2, h3 { font-weight: bold; }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0

  test "very long line":
    let src = ".class { color: " & repeat("very", 100) & "; }\n"
    let result = validateSource(src, flavor = lfCSS)
    check result.errors.len >= 0