99 lines
3.3 KiB
Go
99 lines
3.3 KiB
Go
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
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// All rights reserved.
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// t_scanner_test.go
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package expr
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import (
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"errors"
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"reflect"
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"strings"
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"testing"
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)
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func TestScanner(t *testing.T) {
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type inputType struct {
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source string
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wantSym Symbol
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wantValue any
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wantErr error
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}
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inputs := []inputType{
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/* 1 */ {`123`, SymInteger, int64(123), nil},
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/* 2 */ {"=", SymEqual, nil, nil},
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/* 3 */ {`--`, SymDoubleMinus, nil, nil},
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/* 4 */ {`++`, SymDoublePlus, nil, nil},
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/* 5 */ {`**`, SymDoubleStar, nil, nil},
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/* 6 */ {`&&`, SymDoubleAmpersand, nil, nil},
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/* 7 */ {`||`, SymDoubleVertBar, nil, nil},
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/* 8 */ {`NOT`, SymKwNot, nil, nil},
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/* 9 */ {`AND`, SymKwAnd, nil, nil},
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/* 10 */ {`or`, SymKwOr, nil, nil},
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/* 11 */ {`+=`, SymPlusEqual, nil, nil},
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/* 12 */ {`-=`, SymMinusEqual, nil, nil},
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/* 13 */ {`|`, SymVertBar, nil, nil},
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/* 14 */ {`:`, SymColon, nil, nil},
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/* 15 */ {`;`, SymSemiColon, nil, nil},
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/* 16 */ {`.`, SymDot, nil, nil},
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/* 17 */ {`0.5`, SymFloat, float64(0.5), nil},
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/* 18 */ {`\\`, SymBackSlash, nil, nil},
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/* 19 */ {"`", SymBackTick, nil, nil},
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/* 20 */ {"?", SymQuestion, nil, nil},
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/* 21 */ {"&", SymAmpersand, nil, nil},
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/* 22 */ {"@", SymAt, nil, nil},
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/* 23 */ {`#`, SymHash, nil, nil},
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/* 24 */ {`%`, SymPercent, nil, nil},
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/* 25 */ {`\'`, SymQuote, nil, nil},
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/* 26 */ {`\"`, SymDoubleQuote, nil, nil},
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/* 27 */ {`_`, SymUndescore, nil, nil},
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/* 28 */ {`<>`, SymLessGreater, nil, nil},
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/* 29 */ {`[`, SymOpenSquare, nil, nil},
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/* 30 */ {`]`, SymClosedSquare, nil, nil},
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/* 31 */ {`{`, SymOpenBrace, nil, nil},
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/* 32 */ {`}`, SymClosedBrace, nil, nil},
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/* 33 */ {`(`, SymOpenRound, nil, nil},
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/* 34 */ {`)`, SymClosedRound, nil, nil},
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/* 35 */ {`1E+2`, SymFloat, float64(100), nil},
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/* 36 */ {`1E+x`, SymError, errors.New("[1:5] expected integer exponent, got x"), nil},
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/* 37 */ {`$`, SymDollar, nil, nil},
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/* 38 */ {`\`, SymError, errors.New("incomplete escape sequence"), nil},
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/* 39 */ {`"string"`, SymString, "string", nil},
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/* 40 */ {`identifier`, SymIdentifier, "identifier", nil},
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/* 41 */ {`1.2(3)`, SymFraction, newFraction(37, 30), nil},
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}
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for i, input := range inputs {
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// if i != 40 {
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// continue
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// }
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if input.wantErr == nil {
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t.Logf("[+]Test nr %2d -- %q", i+1, input.source)
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} else {
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t.Logf("[-]Test nr %2d -- %q", i+1, input.source)
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}
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r := strings.NewReader(input.source)
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scanner := NewScanner(r, nil)
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if tk := scanner.Next(); tk == nil {
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t.Errorf("%d: %q -> got = (nil), want %v (value %v [%T])", i+1, input.source, input.wantSym, input.wantValue, input.wantValue)
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// } else if tk.Sym != input.wantSym || tk.Value != input.wantValue {
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} else if tk.Sym != input.wantSym || !reflect.DeepEqual(tk.Value, input.wantValue) {
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if tk.Sym == SymError && input.wantSym == tk.Sym {
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if tkErr, tkOk := tk.Value.(error); tkOk {
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if inputErr, inputOk := input.wantValue.(error); inputOk {
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if tkErr.Error() != inputErr.Error() {
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t.Errorf("%d: %q -> got-error = %v, want-error: %v", i+1,
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input.source, tk.Value, input.wantValue)
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}
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}
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}
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} else {
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t.Errorf("%d: %q -> got = %v (value=%v [%T]), want %v (value=%v [%T])", i+1,
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input.source, tk.Sym, tk.Value, tk.Value, input.wantSym, input.wantValue, input.wantValue)
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}
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}
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}
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}
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