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generate_test.go
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generate_test.go
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package muxt_test
import (
"go/ast"
"go/parser"
"go/token"
"html/template"
"io"
"log"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/tools/txtar"
"github.com/crhntr/muxt"
)
func TestGenerate(t *testing.T) {
for _, tt := range []struct {
Name string
Templates string
Receiver string
ReceiverPackage string
PackageName string
TemplatesVar string
RoutesFunc string
Imports []string
ExpectedError string
ExpectedFile string
}{
{
Name: "simple",
Templates: `{{define "GET /"}}Hello, world!{{end}}`,
ExpectedFile: `package main
import (
"net/http"
"bytes"
)
type RoutesReceiver interface {
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
execute(response, request, true, "GET /", http.StatusOK, request)
})
}
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {
buf := bytes.NewBuffer(nil)
if err := templates.ExecuteTemplate(buf, name, data); err != nil {
http.Error(response, err.Error(), http.StatusInternalServerError)
return
}
if writeHeader {
response.Header().Set("content-type", "text/html; charset=utf-8")
response.WriteHeader(code)
}
_, _ = buf.WriteTo(response)
}
`,
},
{
Name: "simple call",
Templates: `{{define "GET / F()"}}Hello, world!{{end}}`,
ExpectedFile: `package main
import (
"net/http"
"bytes"
)
type RoutesReceiver interface {
F() any
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
data := receiver.F()
execute(response, request, true, "GET / F()", http.StatusOK, data)
})
}
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {
buf := bytes.NewBuffer(nil)
if err := templates.ExecuteTemplate(buf, name, data); err != nil {
http.Error(response, err.Error(), http.StatusInternalServerError)
return
}
if writeHeader {
response.Header().Set("content-type", "text/html; charset=utf-8")
response.WriteHeader(code)
}
_, _ = buf.WriteTo(response)
}
`,
},
{
Name: "multiple arguments no static receiver",
Templates: `{{define "GET /project/{projectID}/task/{taskID} F(ctx, response, request, projectID, taskID)"}}Hello, world!{{end}}`,
ExpectedFile: `package main
import (
"context"
"net/http"
"bytes"
)
type RoutesReceiver interface {
F(ctx context.Context, response http.ResponseWriter, request *http.Request, projectID string, taskID string) any
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /project/{projectID}/task/{taskID}", func(response http.ResponseWriter, request *http.Request) {
ctx := request.Context()
projectID := request.PathValue("projectID")
taskID := request.PathValue("taskID")
data := receiver.F(ctx, response, request, projectID, taskID)
execute(response, request, false, "GET /project/{projectID}/task/{taskID} F(ctx, response, request, projectID, taskID)", http.StatusOK, data)
})
}
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {
buf := bytes.NewBuffer(nil)
if err := templates.ExecuteTemplate(buf, name, data); err != nil {
http.Error(response, err.Error(), http.StatusInternalServerError)
return
}
if writeHeader {
response.Header().Set("content-type", "text/html; charset=utf-8")
response.WriteHeader(code)
}
_, _ = buf.WriteTo(response)
}
`,
},
{
Name: "simple call with static one argument",
Templates: `{{define "GET /age/{username} F(username)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- receiver.go --
package main
type T struct{}
func (T) F(username string) int { return 30 }
`,
Receiver: "T",
ExpectedFile: `package main
import (
"net/http"
"bytes"
)
type RoutesReceiver interface {
F(username string) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /age/{username}", func(response http.ResponseWriter, request *http.Request) {
username := request.PathValue("username")
data := receiver.F(username)
execute(response, request, true, "GET /age/{username} F(username)", http.StatusOK, data)
})
}
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {
buf := bytes.NewBuffer(nil)
if err := templates.ExecuteTemplate(buf, name, data); err != nil {
http.Error(response, err.Error(), http.StatusInternalServerError)
return
}
if writeHeader {
response.Header().Set("content-type", "text/html; charset=utf-8")
response.WriteHeader(code)
}
_, _ = buf.WriteTo(response)
}
`,
},
{
Name: "method receiver is a pointer",
Templates: `{{define "GET /age/{username} F(username)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `s
-- receiver.go --
package main
type T struct{}
func (*T) F(username string) int { return 30 }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(username string) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /age/{username}", func(response http.ResponseWriter, request *http.Request) {
username := request.PathValue("username")
data := receiver.F(username)
execute(response, request, true, "GET /age/{username} F(username)", http.StatusOK, data)
})
}
`,
},
{
Name: "execute function defined in receiver file",
Templates: `{{define "GET /age/{username} F(username)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `s
-- receiver.go --
package main
type T struct{}
func (*T) F(username string) int { return 30 }
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {
response.WriteHeader(code)
_ = templates.ExecuteTemplate(response, name, data)
}
`,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(username string) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /age/{username}", func(response http.ResponseWriter, request *http.Request) {
username := request.PathValue("username")
data := receiver.F(username)
execute(response, request, true, "GET /age/{username} F(username)", http.StatusOK, data)
})
}
`,
},
{
Name: "execute function already defined in output file",
Templates: ``,
ReceiverPackage: `
-- receiver.go --
package main
-- template_routes.go --
package main
import(
"html/template"
"net/html"
)
func routes(mux *http.ServeMux, receiver RoutesReceiver) {}
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {
response.WriteHeader(code)
_ = templates.ExecuteTemplate(response, name, data)
}
`,
ExpectedFile: `package main
import (
"net/http"
"bytes"
)
type RoutesReceiver interface {
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
}
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {
buf := bytes.NewBuffer(nil)
if err := templates.ExecuteTemplate(buf, name, data); err != nil {
http.Error(response, err.Error(), http.StatusInternalServerError)
return
}
if writeHeader {
response.Header().Set("content-type", "text/html; charset=utf-8")
response.WriteHeader(code)
}
_, _ = buf.WriteTo(response)
}
`,
},
{
Name: "call method with two returns",
Templates: `{{define "GET /age/{username} F(username)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- receiver.go --
package main
import "net/http"
type T struct{}
func (T) F(username string) (int, error) { return 30, error }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(username string) (int, error)
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /age/{username}", func(response http.ResponseWriter, request *http.Request) {
username := request.PathValue("username")
data, err := receiver.F(username)
if err != nil {
http.Error(response, err.Error(), http.StatusInternalServerError)
return
}
execute(response, request, true, "GET /age/{username} F(username)", http.StatusOK, data)
})
}
`,
},
{
Name: "error wrong argument type",
Templates: `{{define "GET / F(request)"}}Hello, world!{{end}}`,
ReceiverPackage: `
-- receiver.go --
package main
type T struct{}
func (T) F(ctx context.Context) int { return 30 }
` + executeGo,
Receiver: "T",
ExpectedError: "method expects type context.Context but request is *http.Request",
},
{
Name: "simple call larger receiver with larger package",
Templates: `{{define "GET /age/{username} F(ctx, username)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- receiver.go --
package main
type (
T0 struct{}
T struct{}
)
-- f.go --
package main
import "context"
func F(string) int { return 20 }
func (T0) F(ctx context.Context) int { return 30 }
func (T) F1(ctx context.Context, username string) int { return 30 }
func (T) F(ctx context.Context, username string) int { return 30 }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import (
"context"
"net/http"
)
type RoutesReceiver interface {
F(ctx context.Context, username string) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /age/{username}", func(response http.ResponseWriter, request *http.Request) {
ctx := request.Context()
username := request.PathValue("username")
data := receiver.F(ctx, username)
execute(response, request, true, "GET /age/{username} F(ctx, username)", http.StatusOK, data)
})
}
`,
},
{
Name: "when using param parsers",
Receiver: "T",
Templates: `
{{- define "GET /bool/{value} PassBool(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /int/{value} PassInt(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /int16/{value} PassInt16(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /int32/{value} PassInt32(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /int64/{value} PassInt64(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /int8/{value} PassInt8(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /uint/{value} PassUint(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /uint16/{value} PassUint16(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /uint32/{value} PassUint32(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /uint64/{value} PassUint64(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
{{- define "GET /uint8/{value} PassUint8(value)" -}} <p>{{- printf "%[1]#v %[1]T" . -}}</p> {{- end -}}
`,
ReceiverPackage: `
-- t.go --
package main
import (
"embed"
)
//go:embed *.gohtml
var formHTML embed.FS
var templates = template.Must(template.ParseFS(formHTML, "*"))
type T struct{}
func (T) PassInt(in int) int { return in }
func (T) PassInt64(in int64) int64 { return in }
func (T) PassInt32(in int32) int32 { return in }
func (T) PassInt16(in int16) int16 { return in }
func (T) PassInt8(in int8) int8 { return in }
func (T) PassUint(in uint) uint { return in }
func (T) PassUint64(in uint64) uint64 { return in }
func (T) PassUint16(in uint16) uint16 { return in }
func (T) PassUint32(in uint32) uint32 { return in }
func (T) PassUint64(in uint16) uint16 { return in }
func (T) PassUint8(in uint8) uint8 { return in }
func (T) PassBool(in bool) bool { return in }
func (T) PassByte(in byte) byte { return in }
func (T) PassRune(in rune) rune { return in }
` + executeGo,
ExpectedFile: `package main
import (
"net/http"
"strconv"
)
type RoutesReceiver interface {
PassBool(in bool) bool
PassInt(in int) int
PassInt16(in int16) int16
PassInt32(in int32) int32
PassInt64(in int64) int64
PassInt8(in int8) int8
PassUint(in uint) uint
PassUint16(in uint16) uint16
PassUint32(in uint32) uint32
PassUint64(in uint64) uint64
PassUint8(in uint8) uint8
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /bool/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseBool(request.PathValue("value"))
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := valueParsed
data := receiver.PassBool(value)
execute(response, request, true, "GET /bool/{value} PassBool(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /int/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.Atoi(request.PathValue("value"))
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := valueParsed
data := receiver.PassInt(value)
execute(response, request, true, "GET /int/{value} PassInt(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /int16/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseInt(request.PathValue("value"), 10, 16)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := int16(valueParsed)
data := receiver.PassInt16(value)
execute(response, request, true, "GET /int16/{value} PassInt16(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /int32/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseInt(request.PathValue("value"), 10, 32)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := int32(valueParsed)
data := receiver.PassInt32(value)
execute(response, request, true, "GET /int32/{value} PassInt32(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /int64/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseInt(request.PathValue("value"), 10, 64)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := valueParsed
data := receiver.PassInt64(value)
execute(response, request, true, "GET /int64/{value} PassInt64(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /int8/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseInt(request.PathValue("value"), 10, 8)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := int8(valueParsed)
data := receiver.PassInt8(value)
execute(response, request, true, "GET /int8/{value} PassInt8(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /uint/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseUint(request.PathValue("value"), 10, 64)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := uint(valueParsed)
data := receiver.PassUint(value)
execute(response, request, true, "GET /uint/{value} PassUint(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /uint16/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseUint(request.PathValue("value"), 10, 16)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := uint16(valueParsed)
data := receiver.PassUint16(value)
execute(response, request, true, "GET /uint16/{value} PassUint16(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /uint32/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseUint(request.PathValue("value"), 10, 32)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := uint32(valueParsed)
data := receiver.PassUint32(value)
execute(response, request, true, "GET /uint32/{value} PassUint32(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /uint64/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseUint(request.PathValue("value"), 10, 64)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := valueParsed
data := receiver.PassUint64(value)
execute(response, request, true, "GET /uint64/{value} PassUint64(value)", http.StatusOK, data)
})
mux.HandleFunc("GET /uint8/{value}", func(response http.ResponseWriter, request *http.Request) {
valueParsed, err := strconv.ParseUint(request.PathValue("value"), 10, 8)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
value := uint8(valueParsed)
data := receiver.PassUint8(value)
execute(response, request, true, "GET /uint8/{value} PassUint8(value)", http.StatusOK, data)
})
}
`,
},
{
Name: "form has no fields",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
type T struct{}
type In struct{}
func (T) F(form In) any { return nil }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(form In) any
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form In
data := receiver.F(form)
execute(response, request, true, "GET / F(form)", http.StatusOK, data)
})
}
`,
},
{
Name: "F is not defined and a form field is passed",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
type T struct{}
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import (
"net/http"
"net/url"
)
type RoutesReceiver interface {
F(form url.Values) any
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form url.Values = response.Form
data := receiver.F(form)
execute(response, request, true, "GET / F(form)", http.StatusOK, data)
})
}
`,
},
{
Name: "F is defined and form type is a struct",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
type (
T struct{}
In struct{
field string
}
)
func (T) F(form In) int { return 0 }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(form In) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form In
form.field = request.FormValue("field")
data := receiver.F(form)
execute(response, request, true, "GET / F(form)", http.StatusOK, data)
})
}
`,
},
{
Name: "F is defined and form field has an input tag",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
type (
T struct{}
In struct{
field string ` + "`name:\"some-field\"`" + `
}
)
func (T) F(form In) int { return 0 }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(form In) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form In
form.field = request.FormValue("some-field")
data := receiver.F(form)
execute(response, request, true, "GET / F(form)", http.StatusOK, data)
})
}
`,
},
{
Name: "F is defined and form has two string fields",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
import "net/http"
type (
T struct{}
In struct{
fieldInt int
fieldInt64 int64
fieldInt32 int32
fieldInt16 int16
fieldInt8 int8
fieldUint uint
fieldUint64 uint64
fieldUint16 uint16
fieldUint32 uint32
fieldUint16 uint16
fieldUint8 uint8
fieldBool bool
}
)
func (T) F(form In) int { return 0 }
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {}
`,
Receiver: "T",
ExpectedFile: `package main
import (
"net/http"
"strconv"
)
type RoutesReceiver interface {
F(form In) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form In
{
value, err := strconv.Atoi(request.FormValue("fieldInt"))
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldInt = value
}
{
value, err := strconv.ParseInt(request.FormValue("fieldInt64"), 10, 64)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldInt64 = value
}
{
value, err := strconv.ParseInt(request.FormValue("fieldInt32"), 10, 32)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldInt32 = int32(value)
}
{
value, err := strconv.ParseInt(request.FormValue("fieldInt16"), 10, 16)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldInt16 = int16(value)
}
{
value, err := strconv.ParseInt(request.FormValue("fieldInt8"), 10, 8)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldInt8 = int8(value)
}
{
value, err := strconv.ParseUint(request.FormValue("fieldUint"), 10, 64)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldUint = uint(value)
}
{
value, err := strconv.ParseUint(request.FormValue("fieldUint64"), 10, 64)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldUint64 = value
}
{
value, err := strconv.ParseUint(request.FormValue("fieldUint16"), 10, 16)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldUint16 = uint16(value)
}
{
value, err := strconv.ParseUint(request.FormValue("fieldUint32"), 10, 32)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldUint32 = uint32(value)
}
{
value, err := strconv.ParseUint(request.FormValue("fieldUint16"), 10, 16)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldUint16 = uint16(value)
}
{
value, err := strconv.ParseUint(request.FormValue("fieldUint8"), 10, 8)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldUint8 = uint8(value)
}
{
value, err := strconv.ParseBool(request.FormValue("fieldBool"))
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldBool = value
}
data := receiver.F(form)
execute(response, request, true, "GET / F(form)", http.StatusOK, data)
})
}
`,
},
{
Name: "F is defined and form has two two names for a single field",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
import "net/http"
type (
T struct{}
In struct{
field1, field2 string
}
)
func (T) F(form In) int { return 0 }
func execute(response http.ResponseWriter, request *http.Request, writeHeader bool, name string, code int, data any) {}
`,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(form In) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form In
form.field1 = request.FormValue("field1")
form.field2 = request.FormValue("field2")
data := receiver.F(form)
execute(response, request, true, "GET / F(form)", http.StatusOK, data)
})
}
`,
},
{
Name: "F is defined and form slice field",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
import "net/http"
type (
T struct{}
In struct{
field []string
}
)
func (T) F(form In) int { return 0 }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import "net/http"
type RoutesReceiver interface {
F(form In) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form In
for _, val := range request.Form["field"] {
form.field = append(form.field, val)
}
data := receiver.F(form)
execute(response, request, true, "GET / F(form)", http.StatusOK, data)
})
}
`,
},
{
Name: "F is defined and form has typed slice fields",
Templates: `{{define "GET / F(form)"}}Hello, {{.}}!{{end}}`,
ReceiverPackage: `
-- in.go --
package main
type (
T struct{}
In struct{
fieldInt []int
fieldInt64 []int64
fieldInt32 []int32
fieldInt16 []int16
fieldInt8 []int8
fieldUint []uint
fieldUint64 []uint64
fieldUint16 []uint16
fieldUint32 []uint32
fieldUint16 []uint16
fieldUint8 []uint8
fieldBool []bool
}
)
func (T) F(form In) int { return 0 }
` + executeGo,
Receiver: "T",
ExpectedFile: `package main
import (
"net/http"
"strconv"
)
type RoutesReceiver interface {
F(form In) int
}
func routes(mux *http.ServeMux, receiver RoutesReceiver) {
mux.HandleFunc("GET /", func(response http.ResponseWriter, request *http.Request) {
request.ParseForm()
var form In
for _, val := range request.Form["fieldInt"] {
value, err := strconv.Atoi(val)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldInt = append(form.fieldInt, value)
}
for _, val := range request.Form["fieldInt64"] {
value, err := strconv.ParseInt(val, 10, 64)
if err != nil {
http.Error(response, err.Error(), http.StatusBadRequest)
return
}
form.fieldInt64 = append(form.fieldInt64, value)