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plugin_test.go
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2348 lines (2007 loc) · 55.1 KB
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package jsonic
import (
"strings"
"testing"
)
// hasExactTag checks if tagStr (comma-separated) contains the exact tag.
func hasExactTag(tagStr, tag string) bool {
for _, t := range strings.Split(tagStr, ",") {
if strings.TrimSpace(t) == tag {
return true
}
}
return false
}
// --- Plugin: Use and basic invocation ---
func TestUseInvokesPlugin(t *testing.T) {
invoked := false
j := Make()
j.Use(func(j *Jsonic, opts map[string]any) error {
invoked = true
return nil
})
if !invoked {
t.Error("plugin was not invoked")
}
}
func TestUsePassesOptions(t *testing.T) {
var got map[string]any
j := Make()
j.Use(func(j *Jsonic, opts map[string]any) error {
got = opts
return nil
}, map[string]any{"key": "value"})
if got == nil || got["key"] != "value" {
t.Errorf("plugin options not passed correctly: %v", got)
}
}
func TestUseChaining(t *testing.T) {
order := []string{}
j := Make()
j.Use(func(j *Jsonic, opts map[string]any) error {
order = append(order, "first")
return nil
})
j.Use(func(j *Jsonic, opts map[string]any) error {
order = append(order, "second")
return nil
})
if len(order) != 2 || order[0] != "first" || order[1] != "second" {
t.Errorf("expected [first second], got %v", order)
}
}
func TestPlugins(t *testing.T) {
j := Make()
j.Use(func(j *Jsonic, opts map[string]any) error { return nil })
j.Use(func(j *Jsonic, opts map[string]any) error { return nil })
if len(j.Plugins()) != 2 {
t.Errorf("expected 2 plugins, got %d", len(j.Plugins()))
}
}
// --- Plugin: Token registration ---
func TestTokenRegisterNew(t *testing.T) {
j := Make()
tin := j.Token("#TL", "~")
if tin < TinMAX {
t.Errorf("new token should have Tin >= TinMAX(%d), got %d", TinMAX, tin)
}
// Look up by name returns same Tin.
tin2 := j.Token("#TL")
if tin2 != tin {
t.Errorf("lookup returned different Tin: %d vs %d", tin2, tin)
}
}
func TestTokenLookupBuiltin(t *testing.T) {
j := Make()
tin := j.Token("#OB")
if tin != TinOB {
t.Errorf("expected TinOB=%d, got %d", TinOB, tin)
}
}
func TestTokenFixedRegistration(t *testing.T) {
j := Make()
tin := j.Token("#TL", "~")
// The fixed token map should now contain '~'.
if j.Config().FixedTokens["~"] != tin {
t.Errorf("fixed token '~' not registered in config")
}
}
func TestTokenMultipleRegistrations(t *testing.T) {
j := Make()
t1 := j.Token("#T1", "!")
t2 := j.Token("#T2", "@")
if t1 == t2 {
t.Error("different tokens got same Tin")
}
if t1 < TinMAX || t2 < TinMAX {
t.Error("custom tokens should have Tin >= TinMAX")
}
}
func TestTinName(t *testing.T) {
j := Make()
j.Token("#TL", "~")
name := j.TinName(TinOB)
if name != "#OB" {
t.Errorf("expected #OB, got %s", name)
}
tin := j.Token("#TL")
name2 := j.TinName(tin)
if name2 != "#TL" {
t.Errorf("expected #TL, got %s", name2)
}
}
// --- Plugin: Custom fixed token used in parsing ---
func TestPluginCustomFixedToken(t *testing.T) {
// Plugin that makes '~' a separator (like comma).
tildeSep := func(j *Jsonic, opts map[string]any) error {
// Register ~ as the comma token (replacing comma behavior).
j.Token("#CA", "~")
return nil
}
j := Make()
j.Use(tildeSep)
// Now ~ should act as a comma separator.
result, err := j.Parse("a ~ b ~ c")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
arr, ok := result.([]any)
if !ok {
t.Fatalf("expected array, got %T: %v", result, result)
}
if len(arr) != 3 {
t.Fatalf("expected 3 elements, got %d: %v", len(arr), arr)
}
if arr[0] != "a" || arr[1] != "b" || arr[2] != "c" {
t.Errorf("expected [a b c], got %v", arr)
}
}
// --- Plugin: Rule modification ---
func TestPluginRuleModification(t *testing.T) {
// Plugin that makes all string values uppercase.
upperPlugin := func(j *Jsonic, opts map[string]any) error {
j.Rule("val", func(rs *RuleSpec) {
// Add an after-close action that uppercases string nodes.
rs.AC = append(rs.AC, func(r *Rule, ctx *Context) {
if s, ok := r.Node.(string); ok {
r.Node = strings.ToUpper(s)
}
})
})
return nil
}
j := Make()
j.Use(upperPlugin)
result, err := j.Parse(`"hello"`)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "HELLO" {
t.Errorf("expected HELLO, got %v", result)
}
}
func TestPluginRuleAddAlternate(t *testing.T) {
// Plugin that adds a custom "hundred" rule.
hundredPlugin := func(j *Jsonic, opts map[string]any) error {
// Register a custom fixed token 'H'.
TH := j.Token("#TH", "H")
// Add a new rule that produces 100.
j.Rule("hundred", func(rs *RuleSpec) {
rs.AO = append(rs.AO, func(r *Rule, ctx *Context) {
r.Node = float64(100)
})
})
// Modify val rule to recognize 'H' and push to "hundred".
j.Rule("val", func(rs *RuleSpec) {
rs.Open = append([]*AltSpec{{
S: [][]Tin{{TH}},
P: "hundred",
}}, rs.Open...)
})
return nil
}
j := Make()
j.Use(hundredPlugin)
result, err := j.Parse("H")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != float64(100) {
t.Errorf("expected 100, got %v (%T)", result, result)
}
}
func TestPluginRuleNewRule(t *testing.T) {
j := Make()
// Verify we can create a new rule.
j.Rule("custom", func(rs *RuleSpec) {
if rs.Name != "custom" {
t.Errorf("expected rule name 'custom', got '%s'", rs.Name)
}
})
if j.RSM()["custom"] == nil {
t.Error("custom rule not created")
}
}
// --- Plugin: Custom matcher ---
func TestPluginCustomMatcher(t *testing.T) {
// Plugin that matches "$$" as a special value.
dollarPlugin := func(j *Jsonic, opts map[string]any) error {
j.AddMatcher("dollar", 1500000, func(lex *Lex, rule *Rule) *Token {
pnt := lex.Cursor()
if pnt.SI+2 <= pnt.Len && lex.Src[pnt.SI:pnt.SI+2] == "$$" {
tkn := lex.Token("#VL", TinVL, "DOLLAR", "$$")
pnt.SI += 2
pnt.CI += 2
return tkn
}
return nil
})
return nil
}
j := Make()
j.Use(dollarPlugin)
result, err := j.Parse("$$")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "DOLLAR" {
t.Errorf("expected DOLLAR, got %v", result)
}
}
func TestPluginCustomMatcherInObject(t *testing.T) {
// Custom matcher that matches "@" as a special value.
atPlugin := func(j *Jsonic, opts map[string]any) error {
j.AddMatcher("at", 1500000, func(lex *Lex, rule *Rule) *Token {
pnt := lex.Cursor()
if pnt.SI < pnt.Len && lex.Src[pnt.SI] == '@' {
tkn := lex.Token("#VL", TinVL, "AT_VALUE", "@")
pnt.SI++
pnt.CI++
return tkn
}
return nil
})
return nil
}
j := Make()
j.Use(atPlugin)
result, err := j.Parse("{a: @}")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
m, ok := result.(map[string]any)
if !ok {
t.Fatalf("expected map, got %T: %v", result, result)
}
if m["a"] != "AT_VALUE" {
t.Errorf("expected AT_VALUE, got %v", m["a"])
}
}
func TestPluginMatcherPriority(t *testing.T) {
// Verify early matchers (priority < 2e6) run before built-in matchers.
// The early matcher sees '42' before the number matcher does.
earlySawInput := false
j := Make()
j.AddMatcher("early", 1000000, func(lex *Lex, rule *Rule) *Token {
pnt := lex.Cursor()
if pnt.SI < pnt.Len && lex.Src[pnt.SI] == '4' {
earlySawInput = true
}
return nil // Pass through to built-in matchers.
})
j.Parse("42")
if !earlySawInput {
t.Error("early matcher was not invoked before built-in number matcher")
}
}
func TestPluginMatcherLowPriorityCaptures(t *testing.T) {
// An early custom matcher can capture input before built-in matchers.
j := Make()
j.AddMatcher("capture42", 1000000, func(lex *Lex, rule *Rule) *Token {
pnt := lex.Cursor()
if pnt.SI+2 <= pnt.Len && lex.Src[pnt.SI:pnt.SI+2] == "42" {
tkn := lex.Token("#VL", TinVL, "FORTY_TWO", "42")
pnt.SI += 2
pnt.CI += 2
return tkn
}
return nil
})
result, err := j.Parse("42")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "FORTY_TWO" {
t.Errorf("expected FORTY_TWO, got %v", result)
}
}
// --- Plugin: Config and RSM access ---
func TestPluginConfigAccess(t *testing.T) {
j := Make()
cfg := j.Config()
if cfg == nil {
t.Fatal("Config() returned nil")
}
if !cfg.FixedLex {
t.Error("expected FixedLex to be true")
}
}
func TestPluginRSMAccess(t *testing.T) {
j := Make()
rsm := j.RSM()
if rsm == nil {
t.Fatal("RSM() returned nil")
}
if rsm["val"] == nil {
t.Error("expected 'val' rule in RSM")
}
}
// --- Plugin: Instance isolation ---
func TestPluginInstanceIsolation(t *testing.T) {
j1 := Make()
j2 := Make()
// Registering a token on j1 should not affect j2.
j1.Token("#T1", "~")
if _, ok := j2.Config().FixedTokens["~"]; ok {
t.Error("custom token leaked from j1 to j2")
}
}
// --- Plugin: Composite test (full plugin workflow) ---
func TestPluginComposite(t *testing.T) {
// A realistic plugin that:
// 1. Registers a custom token ';' as separator (replacing comma)
// 2. Adds a before-open action to list rule
semiPlugin := func(j *Jsonic, opts map[string]any) error {
j.Token("#CA", ";")
return nil
}
j := Make()
j.Use(semiPlugin)
// Semicolon should work as separator.
result, err := j.Parse("a ; b ; c")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
arr, ok := result.([]any)
if !ok {
t.Fatalf("expected array, got %T: %v", result, result)
}
if len(arr) != 3 {
t.Fatalf("expected 3 elements, got %d: %v", len(arr), arr)
}
// Original comma should still work too (it's still in FixedTokens).
result2, err := j.Parse("x , y")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
arr2, ok := result2.([]any)
if !ok {
t.Fatalf("expected array, got %T: %v", result2, result2)
}
if len(arr2) != 2 {
t.Fatalf("expected 2 elements, got %d: %v", len(arr2), arr2)
}
}
// --- Plugin: Nil options handling ---
func TestUseNilOptions(t *testing.T) {
invoked := false
j := Make()
j.Use(func(j *Jsonic, opts map[string]any) error {
invoked = true
if opts != nil {
t.Errorf("expected nil opts, got %v", opts)
}
return nil
})
if !invoked {
t.Error("plugin not invoked")
}
}
// --- Plugin: Disable built-in features ---
func TestPluginDisableComments(t *testing.T) {
// Disable comments entirely by providing empty comment definitions.
j := Make(Options{
Comment: &CommentOptions{
Lex: boolPtr(false),
Def: map[string]*CommentDef{},
},
})
// With comments disabled and no comment defs, # should be treated as text.
result, err := j.Parse(`{a: #hello}`)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
m, ok := result.(map[string]any)
if !ok {
t.Fatalf("expected map, got %T: %v", result, result)
}
if v, ok := m["a"].(string); !ok || !strings.HasPrefix(v, "#hello") {
t.Errorf("expected a to start with '#hello', got %v", m["a"])
}
}
func TestPluginDisableNumbers(t *testing.T) {
j := Make(Options{
Number: &NumberOptions{Lex: boolPtr(false)},
})
// With numbers disabled, 42 should be treated as text.
result, err := j.Parse("42")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "42" {
t.Errorf("expected string '42', got %v (%T)", result, result)
}
}
// --- Multi-character fixed tokens ---
func TestMultiCharFixedToken(t *testing.T) {
j := Make()
TA := j.Token("#TA", "=>")
j.Rule("val", func(rs *RuleSpec) {
rs.Open = append([]*AltSpec{{
S: [][]Tin{{TA}},
A: func(r *Rule, ctx *Context) {
r.Node = "ARROW"
},
}}, rs.Open...)
})
result, err := j.Parse("=>")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "ARROW" {
t.Errorf("expected ARROW, got %v", result)
}
}
func TestMultiCharFixedTokenLongestMatch(t *testing.T) {
j := Make()
TEQ := j.Token("#TEQ", "=")
TARROW := j.Token("#TARROW", "=>")
matchedEQ := false
matchedArrow := false
j.Rule("val", func(rs *RuleSpec) {
rs.Open = append([]*AltSpec{
{
S: [][]Tin{{TARROW}},
A: func(r *Rule, ctx *Context) {
matchedArrow = true
r.Node = "ARROW"
},
},
{
S: [][]Tin{{TEQ}},
A: func(r *Rule, ctx *Context) {
matchedEQ = true
r.Node = "EQ"
},
},
}, rs.Open...)
})
// "=>" should match the arrow (longer), not just "=".
result, err := j.Parse("=>")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "ARROW" {
t.Errorf("expected ARROW, got %v", result)
}
if !matchedArrow {
t.Error("arrow should have been matched")
}
if matchedEQ {
t.Error("eq should not have been matched for =>")
}
}
func TestMultiCharFixedTokenBreaksText(t *testing.T) {
j := Make()
j.Token("#TA", "=>")
// "abc=>" should parse "abc" as text, then "=>" as fixed token.
result, err := j.Parse("{key: abc=>}")
if err != nil {
// If the parser can't handle "=>" in this context, that's OK.
// The important thing is that "=>" breaks text.
return
}
m, ok := result.(map[string]any)
if !ok {
return
}
// "key" should be "abc" since "=>" breaks text.
if v, ok := m["key"].(string); ok && v == "abc" {
// Expected behavior: text stops at "=>"
}
_ = m
}
// --- Ender system ---
func TestEnderCharsBreakText(t *testing.T) {
j := Make(Options{
Ender: []string{"|"},
})
// "|" should end text tokens.
result, err := j.Parse("abc|def")
if err != nil {
// Ender chars may cause unexpected token errors depending on grammar.
// That's expected - the important thing is text stops at "|".
return
}
// If it parses successfully, "abc" should be separated from "def".
_ = result
}
func TestEnderCharsInMap(t *testing.T) {
j := Make(Options{
Ender: []string{"|"},
})
// In a map, ender should break values.
result, err := j.Parse("{a: hello|world}")
if err != nil {
return // Ender breaking may cause parse issues
}
_ = result
}
// --- Custom escape mappings ---
func TestCustomEscapeMappings(t *testing.T) {
j := Make(Options{
String: &StringOptions{
Escape: map[string]string{
"a": "ALPHA",
"d": "DELTA",
},
},
})
result, err := j.Parse(`"\a"`)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "ALPHA" {
t.Errorf("expected ALPHA, got %v", result)
}
result2, err := j.Parse(`"\d"`)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result2 != "DELTA" {
t.Errorf("expected DELTA, got %v", result2)
}
// Standard escapes should still work.
result3, err := j.Parse(`"\n"`)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result3 != "\n" {
t.Errorf("expected newline, got %v", result3)
}
}
// --- Subscriptions ---
func TestSubLex(t *testing.T) {
j := Make()
tokens := []string{}
j.Sub(func(tkn *Token, rule *Rule, ctx *Context) {
tokens = append(tokens, tkn.Src)
}, nil)
j.Parse("{a: 1}")
if len(tokens) == 0 {
t.Error("lex subscriber was not invoked")
}
// Should have seen "{", "a", ":", "1", "}", end
foundBrace := false
for _, tok := range tokens {
if tok == "{" {
foundBrace = true
}
}
if !foundBrace {
t.Errorf("expected to see '{' token, got: %v", tokens)
}
}
func TestSubRule(t *testing.T) {
j := Make()
ruleNames := []string{}
j.Sub(nil, func(rule *Rule, ctx *Context) {
ruleNames = append(ruleNames, rule.Name)
})
j.Parse("{a: 1}")
if len(ruleNames) == 0 {
t.Error("rule subscriber was not invoked")
}
// Should see rule processing for val, map, pair, etc.
foundVal := false
for _, name := range ruleNames {
if name == "val" {
foundVal = true
}
}
if !foundVal {
t.Errorf("expected to see 'val' rule, got: %v", ruleNames)
}
}
// --- Instance derivation ---
func TestDerive(t *testing.T) {
parent := Make()
parent.Token("#TL", "~")
child := parent.Derive()
// Child should inherit parent's custom token.
if _, ok := child.Config().FixedTokens["~"]; !ok {
t.Error("child should inherit parent's custom fixed token")
}
}
func TestDeriveIsolation(t *testing.T) {
parent := Make()
child := parent.Derive()
// Modifying child should not affect parent.
child.Token("#TX", "!")
if _, ok := parent.Config().FixedTokens["!"]; ok {
t.Error("child modification leaked to parent")
}
}
func TestDeriveInheritsPlugins(t *testing.T) {
count := 0
parent := Make()
parent.Use(func(j *Jsonic, opts map[string]any) error {
count++
return nil
})
// Plugin was invoked once on parent.
if count != 1 {
t.Fatalf("expected count 1, got %d", count)
}
child := parent.Derive()
// Plugin should be re-invoked on child.
if count != 2 {
t.Errorf("expected count 2 after derive, got %d", count)
}
if len(child.Plugins()) != 1 {
t.Errorf("expected 1 plugin, got %d", len(child.Plugins()))
}
}
// --- Dynamic options ---
func TestSetOptions(t *testing.T) {
j := Make()
// Parse with defaults.
result, err := j.Parse("42")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != float64(42) {
t.Errorf("expected 42, got %v", result)
}
// Disable number lexing.
j.SetOptions(Options{
Number: &NumberOptions{Lex: boolPtr(false)},
})
// Now 42 should be text.
result2, err := j.Parse("42")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result2 != "42" {
t.Errorf("expected string '42' after SetOptions, got %v (%T)", result2, result2)
}
}
func TestSetOptionsDeepMerge(t *testing.T) {
// SetOptions should deep-merge like the TS options() setter:
// setting one sub-field should not clobber sibling sub-fields.
j := Make(Options{
Number: &NumberOptions{Lex: boolPtr(true), Hex: boolPtr(true)},
})
// Disable hex but leave Lex untouched.
j.SetOptions(Options{
Number: &NumberOptions{Hex: boolPtr(false)},
})
opts := j.Options()
if opts.Number == nil {
t.Fatal("expected Number options to be non-nil")
}
if opts.Number.Lex == nil || !*opts.Number.Lex {
t.Errorf("expected Number.Lex to remain true after SetOptions, got %v", opts.Number.Lex)
}
if opts.Number.Hex == nil || *opts.Number.Hex {
t.Errorf("expected Number.Hex to be false after SetOptions, got %v", opts.Number.Hex)
}
// Numbers should still parse (Lex is still true).
result, err := j.Parse("42")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != float64(42) {
t.Errorf("expected 42, got %v (%T)", result, result)
}
}
func TestSetOptionsDeepMergeMaps(t *testing.T) {
// Map fields like Error and Comment.Def should merge, not replace.
j := Make(Options{
Error: map[string]string{"unexpected": "custom unexpected"},
})
j.SetOptions(Options{
Error: map[string]string{"unterminated_string": "custom unterminated"},
})
opts := j.Options()
if opts.Error["unexpected"] != "custom unexpected" {
t.Errorf("expected Error['unexpected'] to be preserved, got %q", opts.Error["unexpected"])
}
if opts.Error["unterminated_string"] != "custom unterminated" {
t.Errorf("expected Error['unterminated_string'] to be set, got %q", opts.Error["unterminated_string"])
}
}
func TestSetOptionsChaining(t *testing.T) {
// Multiple SetOptions calls should accumulate, not reset.
j := Make()
j.SetOptions(Options{
Comment: &CommentOptions{Lex: boolPtr(false)},
})
j.SetOptions(Options{
Number: &NumberOptions{Lex: boolPtr(false)},
})
opts := j.Options()
if opts.Comment == nil || opts.Comment.Lex == nil || *opts.Comment.Lex {
t.Error("expected Comment.Lex to remain false after second SetOptions")
}
if opts.Number == nil || opts.Number.Lex == nil || *opts.Number.Lex {
t.Error("expected Number.Lex to be false after second SetOptions")
}
}
// --- Rule exclude ---
func TestExclude(t *testing.T) {
j := Make()
// Count alternates with exact "json" group tag before exclude.
hasJsonGroup := false
for _, rs := range j.RSM() {
for _, alt := range rs.Open {
if hasExactTag(alt.G, "json") {
hasJsonGroup = true
break
}
}
if hasJsonGroup {
break
}
}
if !hasJsonGroup {
// Grammar doesn't use "json" group tags, so exclude won't remove anything.
// But the option should still work without error.
j.SetOptions(Options{Rule: &RuleOptions{Exclude: "json"}})
return
}
// If there are "json" tagged alts, exclude should remove them.
j.SetOptions(Options{Rule: &RuleOptions{Exclude: "json"}})
for _, rs := range j.RSM() {
for _, alt := range rs.Open {
if hasExactTag(alt.G, "json") {
t.Errorf("rule %s still has 'json' group alt after Exclude", rs.Name)
}
}
for _, alt := range rs.Close {
if hasExactTag(alt.G, "json") {
t.Errorf("rule %s still has 'json' close alt after Exclude", rs.Name)
}
}
}
}
func TestExcludeCustomGroup(t *testing.T) {
j := Make()
// Add a custom alternate with a group tag.
TT := j.Token("#TT", "!")
j.Rule("val", func(rs *RuleSpec) {
rs.Open = append(rs.Open, &AltSpec{
S: [][]Tin{{TT}},
G: "custom,test",
A: func(r *Rule, ctx *Context) { r.Node = "BANG" },
})
})
// Exclude "custom" group via option.
j.SetOptions(Options{Rule: &RuleOptions{Exclude: "custom"}})
// The custom alt should be removed.
found := false
for _, alt := range j.RSM()["val"].Open {
if strings.Contains(alt.G, "custom") {
found = true
}
}
if found {
t.Error("custom group alt should have been excluded")
}
}
// --- Parse metadata ---
func TestParseMeta(t *testing.T) {
j := Make()
// Add a rule action that reads metadata.
var capturedMeta map[string]any
j.Rule("val", func(rs *RuleSpec) {
rs.AO = append(rs.AO, func(r *Rule, ctx *Context) {
capturedMeta = ctx.Meta
})
})
meta := map[string]any{"mode": "test", "version": 2}
j.ParseMeta("42", meta)
if capturedMeta == nil {
t.Fatal("meta was not passed to context")
}
if capturedMeta["mode"] != "test" {
t.Errorf("expected mode=test, got %v", capturedMeta["mode"])
}
if capturedMeta["version"] != 2 {
t.Errorf("expected version=2, got %v", capturedMeta["version"])
}
}
func TestParseMetaNil(t *testing.T) {
j := Make()
// ParseMeta with nil meta should work.
result, err := j.ParseMeta("42", nil)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != float64(42) {
t.Errorf("expected 42, got %v", result)
}
}
// --- isTextChar config-aware ---
func TestCustomFixedTokenBreaksText(t *testing.T) {
j := Make()
j.Token("#TL", "~")
// "abc~def" should break at "~"
result, err := j.Parse("{key: abc~def}")
if err != nil {
// May cause parse error since ~def is unexpected.
// The important test is that text stops at ~.
return
}
_ = result
}
// --- Empty source handling ---
func TestEmptySourceDefault(t *testing.T) {
j := Make()
result, err := j.Parse("")
if err != nil {
t.Fatalf("empty source should not error by default: %v", err)
}
if result != nil {
t.Errorf("expected nil for empty source, got %v", result)
}
}
func TestEmptySourceDisabled(t *testing.T) {
j := Make(Options{
Lex: &LexOptions{Empty: boolPtr(false)},
})
_, err := j.Parse("")
if err == nil {
t.Error("expected error when empty source is disallowed")
}
}
func TestEmptySourceCustomResult(t *testing.T) {
j := Make(Options{
Lex: &LexOptions{EmptyResult: "EMPTY"},
})
result, err := j.Parse("")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != "EMPTY" {
t.Errorf("expected 'EMPTY', got %v", result)
}
}