package linthost

import "testing"

// TestFormatTernaryNullishParensWrapsAllPositions verifies a `??` operand
// in any of a conditional's three positions is parenthesized, matching
// Prettier 3.
//
// Prettier 3 wraps a nullish-coalescing condition, consequent, or
// alternate of a `?:` for clarity (TypeScript allows the bare form, but
// Prettier adds the parens). `||`/`&&` are left bare.
//
//  1. Parse a conditional whose condition, consequent, and alternate are
//     each a bare `??` expression.
//  2. Apply format/ternary-nullish-parens.
//  3. Assert all three are parenthesized.
//
// @evidence contracts/testing.md#behavioral-verification The owning ternary-nullish rule must parenthesize each of condition, consequent and alternate without changing identifiers, operators or the conditional structure. The complete literal output detects missing a position or wrapping the wrong span.
// @evidence contracts/testing.md#independent-expectations The independently authored complete output parenthesizes each full nullish operand in the condition, consequent and alternate, preserving its existing TypeScript grouping and all identifiers. This entry applies the owning rule to that literal expectation; it does not execute a reference formatter.
// @evidence contracts/testing.md#distinguishing-cases One conditional has all three nullish positions as positives. LeavesLogicalAndParenthesized supplies logical-and, logical-or and already wrapped negatives, including a fully canonical three-position counterpart.
// @evidence contracts/testing.md#execution-ownership TestFormatTernaryNullishParensWrapsAllPositions owns the literal input/output in the public Go unit population. The syntax-only owning rule and edit application run in process without consumer installation, native artifact building or a product host.
func TestFormatTernaryNullishParensWrapsAllPositions(t *testing.T) {
  assertFixSnapshot(
    t,
    "format/ternary-nullish-parens",
    "const r = a ?? b ? c ?? d : e ?? f;\n",
    "const r = (a ?? b) ? (c ?? d) : (e ?? f);\n",
  )
}