clerk @ cb14fd1

package parser

import (

	"testing"

	"olexsmir.xyz/clerk/internal/testutil/golden"

	"olexsmir.xyz/clerk/journal/ast"

	"olexsmir.xyz/clerk/journal/lexer"

)

func TestParser_ParseFile(t *testing.T) {

	tests := []struct{ name, inp string }{

		{"blank line", "\n"},

		{"comment semicolon", "; a comment\n"},

		{"comment hash", "# a comment\n"},

		{"comment percent", "% a comment\n"},

		{"comment star", "* a comment\n"},

		{"alias directive", "alias checking = assets:bank:checking\n"},

		{"tag directive", "tag project-xyz\n"},

		{"year directive", "year 1488\n"},

		{"decimal-mark directive", "decimal-mark ,\n"},

		{"D directive", `D $1.00

D 10 UAH

`},

		{"P directive", "P 2024/01/01 USD 40.50 UAH\n"},

		{"P directive with time", "P 2024-01-01 12:00:00 USD 40.50 UAH\n"},

		{"N directive", "N $\n"},

		{"apply tag directive", "apply tag hashtag\n"},

		{"apply fixed directive", "apply fixed CAD $0.90\n"},

		{"end apply directive", "end apply tag\n"},

		{"comment directive", "comment\nsome text\nend comment\n"},

		{"comment directive end alone", "comment\nsome text\nend\n"},

		{"comment directive with header", "comment tag:hidden\nstuff\nend\n"},

		{"empty comment block", "comment\nend\n"},

		{"never ending comment directive", "comment\nsome text\n"},

		{"nested apply tag directives", `apply tag hashtag

apply tag nestedtag: true

2011/01/27 Book Store

  expenses:books  $20.00

  liabilities:mastercard

end apply tag

end apply tag

`},

		{"account directive", "account expenses:food\n"},

		{"account directive with comment", "account expenses:food ; my account\n"},

		{"account with subdirectives", `account expenses:food

  note some note

  alias food  ; this gets ignored

`},

		{"comodity directive", "commodity $\n"},

		{"comodity directive word", "commodity UAH\n"},

		{"comodity directive no space", "commodity $1000.00\n"},

		{"commodity quantity first", "commodity 1,000.00 UAH\n"},

		{"commodity quantity after", "commodity UAH 1,000.00\n"},

		{"commodity with subdirectives", `commodity UAH

  format 1 000.00 UAH

  note Божествена Гривня  ; this gets ignored

`},

		{"payee directive", `payee grocery store

payee 'grocery store 3'

payee "grocery store 2"

payee grocery store 1

`},

		{"transaction", "2024/01/01\n"},

		{"automated transaction", `= ^income

    (liabilities:tax)  *.33

= expenses:gifts

    budget:gifts  *-1

    assets:budget  *1

= income:salary

    budget:savings  (amount * 0.5)

`},

		{"transaction with payee", "2024-01-01 groceries\n"},

		{"transaction with digit payees", `2002/01/01 * 1a1a6305d06ce4b284dba0d267c23f69d70c20be

    af0628973ff35bd62ddb048fa41dd8d83c1c46fe       $474.31

    fc6f6f10f627ad1a5af9d488c98405a1498d019d

2002/03/01 * 9861ce541c17b11f627e71c26bf350b33141f62b

    0ecbb1b15e2cf3e515cc0f8533e5bb0fb2326728        $14.91

    fc6f6f10f627ad1a5af9d488c98405a1498d019d

`},

		{"account with spaces", `2026-05-11 testies

	expenses:account name  20.00

	assets:bank

`},

		{"transaction with multiword payee", "2024-01-01 opening balances\n"},

		{"transaction pending", "2024-01-01 ! groceries\n"},

		{"transaction clearerd", "2024-01-01 * groceries\n"},

		{"transaction with note", "2024-01-01 groceries | eating out\n"},

		{"transaction with comment", "2024-01-01 groceries ; note\n"},

		{"transaction with secondary date", "2024/01/01=2024/01/02 groceries\n"},

		{"transaction with costs", `2026-05-11 testies

	expenses:atm  20.00 UAH @ 1 USD

	assets:bank

2026-05-11 testies2

	expenses:atm  20.00 UAH @@ 1 USD

	assets:bank

2026-05-12 testies3

	expenses:atm  20.00 UAH @ 1 USD = 20.00 UAH @ 1 USD

	assets:bank

2015-01-03 money exchange office

    assets:cash  -20 EUR @ 7.53 HRK

    assets:cash  150.60 HRK

`},

		{"transaction with cost and assertion", `2026-05-11 testies

	expenses:atm  20.00 UAH @ 1 USD = 0 UAH

	assets:bank

`},

		{"transaction with posting", `2024-01-01 groceries

    expenses:food  $10.00

    assets:checking

`},

		{"transaction with unicode commodity symbols", `2024-01-01 groceries

    expenses:food  €10.00

    expenses:food  £5.00

    expenses:food  ₹700.00

    assets:checking

`},

		{"transaction with strange commodity symbols", `2024-01-01 groceries

2026-05-20

  asdf  123 $€£

  asdf2

2026-05-20

  asdf  123 bytes

  asdf2

`},

		{"transaction with tabs", `2024-01-01 groceries

	expenses:food  $10.00

	assets:checking

`},

		{"transaction in ukrainian", `2024/03/02 Обід

  витрати:їжа  350 UAH

  активи:готівка

`},

		{"transaction with code", `2024-01-01 (123) groceries

    expenses:food  $10.00

    assets:checking

`},

		{"transaction with posting amounts", `2024.01.01 groceries

    expenses:food  10.00 UAH

    assets:checking  -10.00 UAH

`},

		{"transaction with spaced account name", `2022-01-01 opening balances

    assets                    21 = 21

    equity:opening/closing balances

`},

		{"transaction with inline comment", `2024/01/01 groceries

	Expenses:Good  $10.00 ; food

	Assets:Checking

`},

		{"transaction with header comment", `2024/01/01 groceries

	; header comment

	expenses:food  $10.00

	assets:checking

`},

		{"transaction with trilling indent", `

2013/1/1 * pay taxes

    expenses:personal:tax              $1250

    assets:bank:checking               $-1250

`},

		{"transaction with balance assertion", `2024/01/01 groceries

	expenses:food  $10.00 = $100.00

	assets:checking

2025/03/07 groceries2

	expenses:food  $10.00 == $100.00

	assets:checking  == $0.00

2025/04/08 groceries3

	expenses:food  $10.00

	assets:checking  = $0.00

`},

		{"transaction with virtual accounts", `2024/01/01 groceries

	(virtual:account)  1 PESO

	[something:else]   5 PESO

	something:else

`},

		{"virtual postings with statuses", `2024/01/01 test

  ! (assets:cash)  $10

  (income:gift)  $-10

2024/01/01 test

    (! assets:cash)  $10

    (income:gift)  $-10

2024/01/01 test

    ! (! assets:cash)  $10

    (* income:gift)  $-10

`},

		{"period transaction expressions", `

~ monthly

    expenses:rent          $2000

    assets:bank:checking

~ monthly from 2023-04-15 to 2023-06-16

    expenses:utilities          $400

    assets:bank:checking

~ every 2 months  in 2023, we will review

    expenses:utilities          $400

    assets:bank:checking

~ monthly  Next year blah blah

    expenses:food  $100

    assets:checking

~ monthly from 2018/6 ;In 2019 we will change this

    expenses:food  $100

    assets:checking

`},

		{"unexpected token", `@@@ garbage\n`},

		{"recovery after bad posting", `2024-01-01 groceries

    @@@invalid

    assets:checking

2024/01/02 salary

    income:salary  $1000

    assets:checking

`},

		{"illegal only", "@@@\n"},

		{"illegal at start", "@@@ garbage\n"},

		{"illegal in posting", `2024/01/01 groceries

    @@@invalid

    assets:checking

`},

		{"illegal between transactions", `2024/01/01 groceries

    expenses:food  $10

    assets:checking

@@@

2024/01/02 salary

    income:salary  $1000

    assets:checking

`},

		{"multiple bad postings", `2024/01/01 groceries

    expenses:food  $10

    @@@bad1

    @bad2

    assets:checking

`},

		{"three bad postings", `2024/01/01 groceries

    expenses:food  $10

    @@@bad1

    @bad2

    @bad3

    assets:checking

`},

		{"quoted payee names", `2024-01-01 "groceries store"

  expenses:food  $10

  assets:checking

`},

		{"digit group marks", `2024-01-01 groceries

  expenses:food  1 000.00 UAH

  expenses:supplies  1'000.00 USD

  assets:checking  -2_000.00 USD

`},

		{"directive prefixes", `!account expenses:food

@commodity USD

`},

		{"bad between good", `2024/01/01 groceries

    expenses:food  $10

    @@@bad

    assets:cash  $5

`},

		{"all postings bad", `2024/01/01 groceries

    @@@bad1

    @bad2

    @bad3

`},

		{"bad then next transaction", `2024/01/01 groceries

    expenses:food  $10

    @@@bad

2024/01/02 salary

    income:salary  $1000

    assets:checking

`},

		{"comment between bad postings", `2024/01/01 groceries

    expenses:food  $10

    @@@bad1

    ; a comment

    @bad2

    assets:checking

`},

		{"bad posting at end", `2024/01/01 groceries

    expenses:food  $10

    @@@bad

2024/01/02 salary

    income:salary  $1000

    assets:checking

`},

	}

	for _, tt := range tests {

		t.Run(tt.name, func(t *testing.T) {

			l := lexer.New("j", []byte(tt.inp))

			f := New(l).ParseJournal()

			golden.Assert(t, ast.Dump(f))

		})

	}

}

func FuzzParser(f *testing.F) {

	f.Add([]byte(""))

	f.Add([]byte("account expenses:food\n"))

	f.Add([]byte("account a\n  ; subdirective\n"))

	f.Add([]byte("commodity 1,000.00 UAH\n"))

	f.Add([]byte("include other.journal\n"))

	f.Add([]byte("alias checking = assets:bank:checking\n"))

	f.Add([]byte("2024/01/01 * groceries\n    expenses:food  $10.00\n    assets:checking\n"))

	f.Add([]byte("2024/01/01=2024/01/02 groceries\n"))

	f.Add([]byte("2024/01/01 groceries\n  expenses:food  $10.00\n  assets:checking\n"))

	f.Add([]byte("2008/06/03 * eat & shop\n    expenses:food      $1\n    expenses:supplies  $1\n    assets:cash\n"))

	f.Add([]byte("2015-01-03 * Money exchange office\n    Assets:Cash  -20 EUR @ 7.53 HRK\n    Assets:Cash  150.60 HRK\n"))

	f.Add([]byte("2024/01/01 t ; inline comment\n  a  $10\n"))

	f.Add([]byte("2024/01/01 t\n  (a)  10 @@ $20\n  [b]  30\n"))

	f.Add([]byte("2024/01/01 ß\n  (ß)  10 ß\n"))

	f.Add([]byte("2024/01/01 t\n  (! a)  10\n"))

	f.Add([]byte("2024/01/01 t\n  a  $10 == $10\n"))

	f.Add([]byte("  2024/01/01 t\n  a  $10\n"))

	f.Add([]byte("P 2024/01/01 USD 41.50 UAH\n"))

	f.Add([]byte("P 2024-01-01 12:00:00 USD 41.50 UAH\n"))

	f.Add([]byte("P 2024-01-01 12:00 USD 41.50 UAH\n"))

	f.Add([]byte("~ monthly\n    expenses:food  $100\n    assets:checking\n"))

	f.Add([]byte("= /^Income/\n  expenses:food  $10\n"))

	f.Add([]byte("; a comment\n"))

	f.Add([]byte("comment\nbody\nend\n"))

	f.Add([]byte("\n\n\n"))

	f.Add([]byte("перевірка\n"))

	f.Add([]byte("N $\n"))

	f.Add([]byte("apply tag foo\nend\n"))

	f.Add([]byte("@@@\n"))

	f.Add([]byte("   \n"))

	f.Add([]byte("0\n"))

	f.Add([]byte{0xff, 0xfe, 0x00})

	f.Fuzz(func(t *testing.T, data []byte) {

		l := lexer.New("j", data)

		j := New(l).ParseJournal()

		if j == nil {

			t.Fatalf("nil journal for input %q", string(data))

		}

		// error spans must be in bounds (allow sentinel extension past input)

		dataLen := len(data)

		for _, e := range j.Errors {

			if e.Span.Start.Offset < 0 {

				t.Fatal("error span start is negative")

			}

			if e.Span.End.Offset > dataLen+1 {

				t.Fatalf("error span end out of bounds: [%d,%d] len=%d", e.Span.Start.Offset, e.Span.End.Offset, dataLen)

			}

			if len(e.Message) == 0 {

				t.Fatal("empty error message")

			}

		}

		// dump must not panic and must be deterministic

		dump1, dump2 := ast.Dump(j), ast.Dump(j)

		if dump1 != dump2 {

			t.Fatal("non-deterministic dump")

		}

	})

}