| // +build ignore |
| |
| package main |
| |
| import ( |
| "bytes" |
| "fmt" |
| "go/format" |
| "html/template" |
| "io/ioutil" |
| "log" |
| "path/filepath" |
| "strings" |
| |
| "github.com/globalsign/mgo/internal/json" |
| ) |
| |
| func main() { |
| log.SetFlags(0) |
| log.SetPrefix(name + ": ") |
| |
| var g Generator |
| |
| fmt.Fprintf(&g, "// Code generated by \"%s.go\"; DO NOT EDIT\n\n", name) |
| |
| src := g.generate() |
| |
| err := ioutil.WriteFile(fmt.Sprintf("%s.go", strings.TrimSuffix(name, "_generator")), src, 0644) |
| if err != nil { |
| log.Fatalf("writing output: %s", err) |
| } |
| } |
| |
| // Generator holds the state of the analysis. Primarily used to buffer |
| // the output for format.Source. |
| type Generator struct { |
| bytes.Buffer // Accumulated output. |
| } |
| |
| // format returns the gofmt-ed contents of the Generator's buffer. |
| func (g *Generator) format() []byte { |
| src, err := format.Source(g.Bytes()) |
| if err != nil { |
| // Should never happen, but can arise when developing this code. |
| // The user can compile the output to see the error. |
| log.Printf("warning: internal error: invalid Go generated: %s", err) |
| log.Printf("warning: compile the package to analyze the error") |
| return g.Bytes() |
| } |
| return src |
| } |
| |
| // EVERYTHING ABOVE IS CONSTANT BETWEEN THE GENERATORS |
| |
| const name = "bson_corpus_spec_test_generator" |
| |
| func (g *Generator) generate() []byte { |
| |
| testFiles, err := filepath.Glob("./specdata/specifications/source/bson-corpus/tests/*.json") |
| if err != nil { |
| log.Fatalf("error reading bson-corpus files: %s", err) |
| } |
| |
| tests, err := g.loadTests(testFiles) |
| if err != nil { |
| log.Fatalf("error loading tests: %s", err) |
| } |
| |
| tmpl, err := g.getTemplate() |
| if err != nil { |
| log.Fatalf("error loading template: %s", err) |
| } |
| |
| tmpl.Execute(&g.Buffer, tests) |
| |
| return g.format() |
| } |
| |
| func (g *Generator) loadTests(filenames []string) ([]*testDef, error) { |
| var tests []*testDef |
| for _, filename := range filenames { |
| test, err := g.loadTest(filename) |
| if err != nil { |
| return nil, err |
| } |
| |
| tests = append(tests, test) |
| } |
| |
| return tests, nil |
| } |
| |
| func (g *Generator) loadTest(filename string) (*testDef, error) { |
| content, err := ioutil.ReadFile(filename) |
| if err != nil { |
| return nil, err |
| } |
| |
| var testDef testDef |
| err = json.Unmarshal(content, &testDef) |
| if err != nil { |
| return nil, err |
| } |
| |
| names := make(map[string]struct{}) |
| |
| for i := len(testDef.Valid) - 1; i >= 0; i-- { |
| if testDef.BsonType == "0x05" && testDef.Valid[i].Description == "subtype 0x02" { |
| testDef.Valid = append(testDef.Valid[:i], testDef.Valid[i+1:]...) |
| continue |
| } |
| |
| name := cleanupFuncName(testDef.Description + "_" + testDef.Valid[i].Description) |
| nameIdx := name |
| j := 1 |
| for { |
| if _, ok := names[nameIdx]; !ok { |
| break |
| } |
| |
| nameIdx = fmt.Sprintf("%s_%d", name, j) |
| } |
| |
| names[nameIdx] = struct{}{} |
| |
| testDef.Valid[i].TestDef = &testDef |
| testDef.Valid[i].Name = nameIdx |
| testDef.Valid[i].StructTest = testDef.TestKey != "" && |
| (testDef.BsonType != "0x05" || strings.Contains(testDef.Valid[i].Description, "0x00")) && |
| !testDef.Deprecated |
| } |
| |
| for i := len(testDef.DecodeErrors) - 1; i >= 0; i-- { |
| if strings.Contains(testDef.DecodeErrors[i].Description, "UTF-8") { |
| testDef.DecodeErrors = append(testDef.DecodeErrors[:i], testDef.DecodeErrors[i+1:]...) |
| continue |
| } |
| |
| name := cleanupFuncName(testDef.Description + "_" + testDef.DecodeErrors[i].Description) |
| nameIdx := name |
| j := 1 |
| for { |
| if _, ok := names[nameIdx]; !ok { |
| break |
| } |
| |
| nameIdx = fmt.Sprintf("%s_%d", name, j) |
| } |
| names[nameIdx] = struct{}{} |
| |
| testDef.DecodeErrors[i].Name = nameIdx |
| } |
| |
| return &testDef, nil |
| } |
| |
| func (g *Generator) getTemplate() (*template.Template, error) { |
| content := `package bson_test |
| |
| import ( |
| "encoding/hex" |
| "time" |
| |
| . "gopkg.in/check.v1" |
| "github.com/globalsign/mgo/bson" |
| ) |
| |
| func testValid(c *C, in []byte, expected []byte, result interface{}) { |
| err := bson.Unmarshal(in, result) |
| c.Assert(err, IsNil) |
| |
| out, err := bson.Marshal(result) |
| c.Assert(err, IsNil) |
| |
| c.Assert(string(expected), Equals, string(out), Commentf("roundtrip failed for %T, expected '%x' but got '%x'", result, expected, out)) |
| } |
| |
| func testDecodeSkip(c *C, in []byte) { |
| err := bson.Unmarshal(in, &struct{}{}) |
| c.Assert(err, IsNil) |
| } |
| |
| func testDecodeError(c *C, in []byte, result interface{}) { |
| err := bson.Unmarshal(in, result) |
| c.Assert(err, Not(IsNil)) |
| } |
| |
| {{range .}} |
| {{range .Valid}} |
| func (s *S) Test{{.Name}}(c *C) { |
| b, err := hex.DecodeString("{{.Bson}}") |
| c.Assert(err, IsNil) |
| |
| {{if .CanonicalBson}} |
| cb, err := hex.DecodeString("{{.CanonicalBson}}") |
| c.Assert(err, IsNil) |
| {{else}} |
| cb := b |
| {{end}} |
| |
| var resultD bson.D |
| testValid(c, b, cb, &resultD) |
| {{if .StructTest}}var resultS struct { |
| Element {{.TestDef.GoType}} ` + "`bson:\"{{.TestDef.TestKey}}\"`" + ` |
| } |
| testValid(c, b, cb, &resultS){{end}} |
| |
| testDecodeSkip(c, b) |
| } |
| {{end}} |
| |
| {{range .DecodeErrors}} |
| func (s *S) Test{{.Name}}(c *C) { |
| b, err := hex.DecodeString("{{.Bson}}") |
| c.Assert(err, IsNil) |
| |
| var resultD bson.D |
| testDecodeError(c, b, &resultD) |
| } |
| {{end}} |
| {{end}} |
| ` |
| tmpl, err := template.New("").Parse(content) |
| if err != nil { |
| return nil, err |
| } |
| return tmpl, nil |
| } |
| |
| func cleanupFuncName(name string) string { |
| return strings.Map(func(r rune) rune { |
| if (r >= 48 && r <= 57) || (r >= 65 && r <= 90) || (r >= 97 && r <= 122) { |
| return r |
| } |
| return '_' |
| }, name) |
| } |
| |
| type testDef struct { |
| Description string `json:"description"` |
| BsonType string `json:"bson_type"` |
| TestKey string `json:"test_key"` |
| Valid []*valid `json:"valid"` |
| DecodeErrors []*decodeError `json:"decodeErrors"` |
| Deprecated bool `json:"deprecated"` |
| } |
| |
| func (t *testDef) GoType() string { |
| switch t.BsonType { |
| case "0x01": |
| return "float64" |
| case "0x02": |
| return "string" |
| case "0x03": |
| return "bson.D" |
| case "0x04": |
| return "[]interface{}" |
| case "0x05": |
| return "[]byte" |
| case "0x07": |
| return "bson.ObjectId" |
| case "0x08": |
| return "bool" |
| case "0x09": |
| return "time.Time" |
| case "0x0E": |
| return "string" |
| case "0x10": |
| return "int32" |
| case "0x12": |
| return "int64" |
| case "0x13": |
| return "bson.Decimal" |
| default: |
| return "interface{}" |
| } |
| } |
| |
| type valid struct { |
| Description string `json:"description"` |
| Bson string `json:"bson"` |
| CanonicalBson string `json:"canonical_bson"` |
| |
| Name string |
| StructTest bool |
| TestDef *testDef |
| } |
| |
| type decodeError struct { |
| Description string `json:"description"` |
| Bson string `json:"bson"` |
| |
| Name string |
| } |