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Generate deterministic examples (#3521)
* Generate deterministic examples The random generated is seeded with the API name. * Leverage built-in sync map for readability * Fix race condition in test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -4,10 +4,9 @@ import ( | |
| "fmt" | ||
| "math" | ||
| "regexp" | ||
| "regexp/syntax" | ||
| "strings" | ||
| "time" | ||
|
|
||
| regen "github.com/AnatolyRugalev/goregen" | ||
| googleuuid "github.com/google/uuid" | ||
| ) | ||
|
|
||
| const ( | ||
|
|
@@ -209,23 +208,17 @@ func byFormat(a *AttributeExpr, r *ExampleGenerator) any { | |
| FormatIP: r.IPv4Address().String(), | ||
| FormatURI: r.URL(), | ||
| FormatMAC: func() string { | ||
| res, err := regen.Generate(`([0-9A-F]{2}-){5}[0-9A-F]{2}`) | ||
| res, err := syntax.Parse(`([0-9A-F]{2}-){5}[0-9A-F]{2}`, 0) | ||
| if err != nil { | ||
| return "12-34-56-78-9A-BC" | ||
| } | ||
| return res | ||
| return patgen(res, r) | ||
| }(), | ||
| FormatCIDR: "192.168.100.14/24", | ||
| FormatRegexp: r.Characters(3) + ".*", | ||
| FormatRFC1123: time.Unix(int64(r.Int())%1454957045, 0).UTC().Format(time.RFC1123), // to obtain a "fixed" rand | ||
| FormatUUID: func() string { | ||
| uuid, err := googleuuid.NewUUID() | ||
| if err != nil { | ||
| return "12345678-1234-1234-9232-123456789ABC" | ||
| } | ||
| return uuid.String() | ||
| }(), | ||
| FormatJSON: `{"name":"example","email":"[email protected]"}`, | ||
| FormatUUID: r.UUID(), | ||
| FormatJSON: `{"name":"example","email":"[email protected]"}`, | ||
| }[format]; ok { | ||
| return res | ||
| } | ||
|
|
@@ -240,11 +233,67 @@ func byPattern(a *AttributeExpr, r *ExampleGenerator) any { | |
| return false | ||
| } | ||
| pattern := a.Validation.Pattern | ||
| gen, err := regen.NewGenerator(pattern, ®en.GeneratorArgs{MaxUnboundedRepeatCount: 6}) | ||
| re, err := syntax.Parse(pattern, syntax.Perl) | ||
| if err != nil { | ||
| return r.Name() | ||
| } | ||
| return gen.Generate() | ||
| return patgen(re.Simplify(), r) | ||
| } | ||
|
|
||
| func patgen(re *syntax.Regexp, r *ExampleGenerator) string { | ||
| switch re.Op { | ||
| case syntax.OpAlternate: | ||
| i := r.Int() % len(re.Sub) | ||
| return patgen(re.Sub[i], r) | ||
| case syntax.OpCapture: | ||
| return patgen(re.Sub[0], r) | ||
| case syntax.OpConcat: | ||
| var res strings.Builder | ||
| for _, sub := range re.Sub { | ||
| res.WriteString(patgen(sub, r)) | ||
| } | ||
| return res.String() | ||
| case syntax.OpLiteral: | ||
| return string(re.Rune) | ||
| case syntax.OpStar: | ||
| var res strings.Builder | ||
| count := r.Int() % 3 | ||
| for i := 0; i < count; i++ { | ||
| res.WriteString(patgen(re.Sub[0], r)) | ||
| } | ||
| return res.String() | ||
| case syntax.OpPlus: | ||
| var res strings.Builder | ||
| count := r.Int()%2 + 1 | ||
| for i := 0; i < count; i++ { | ||
| res.WriteString(patgen(re.Sub[0], r)) | ||
| } | ||
| return res.String() | ||
| case syntax.OpQuest: | ||
| if r.Int()%2 == 0 { | ||
| return patgen(re.Sub[0], r) | ||
| } | ||
| return "" | ||
| case syntax.OpRepeat: | ||
| var res strings.Builder | ||
| for i := 0; i < re.Min; i++ { | ||
| res.WriteString(patgen(re.Sub[0], r)) | ||
| } | ||
| return res.String() | ||
| case syntax.OpCharClass: | ||
| var chars []rune | ||
| for i := 0; i < len(re.Rune); i += 2 { | ||
| start, end := re.Rune[i], re.Rune[i+1] | ||
| for j := start; j <= end; j++ { | ||
| chars = append(chars, j) | ||
| } | ||
| } | ||
| return string(chars[r.Int()%len(chars)]) | ||
| case syntax.OpAnyChar, syntax.OpAnyCharNotNL: | ||
| return r.Characters(1) | ||
| default: | ||
| return "" | ||
| } | ||
| } | ||
|
|
||
| func byMinMax(a *AttributeExpr, r *ExampleGenerator) any { | ||
|
|
||
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