Sha256: e10084231cb39f1f643100237152c5879cfba67903713d388b659cb01dff34b8
Contents?: true
Size: 1.91 KB
Versions: 92
Compression:
Stored size: 1.91 KB
Contents
package main
import (
"log"
"text/template"
"../../../gen"
)
func main() {
t, err := template.New("").Parse(tmpl)
if err != nil {
log.Fatal(err)
}
var j js
if err := gen.Gen("change", &j, t); err != nil {
log.Fatal(err)
}
}
// The JSON structure we expect to be able to unmarshal into
type js struct {
Exercise string
Version string
Comments []string
Cases []OneCase
}
// template applied to above data structure generates the Go test cases
type OneCase struct {
Description string
Property string
Input struct {
Coins []int
Target int
}
Expected interface{}
}
func (c OneCase) Valid() bool {
valid, _ := determineExpected(c.Expected)
return valid
}
func (c OneCase) IntSlice() []int {
_, list := determineExpected(c.Expected)
return list
}
// determineExpected examines an .Expected interface{} object and determines
// whether an error is indicated by an int value (actually -1) in the JSON,
// or whether .Expected is a slice of integer coins.
func determineExpected(expected interface{}) (valid bool, list []int) {
_, ok := expected.(int)
if ok {
return false, nil
}
ilist, ok := expected.([]interface{})
if !ok {
return false, nil
}
list = make([]int, 0)
for _, iv := range ilist {
// The literals from the JSON are unmarshalled to float64 values,
// which are converted to int for the template output.
v, isFloat64 := iv.(float64)
if isFloat64 {
list = append(list, int(v))
}
}
return true, list
}
var tmpl = `package change
{{.Header}}
var testCases = []struct {
description string
coins []int
target int
valid bool // true => no error, false => error expected
expectedChange []int // when .valid == true, the expected change coins
}{
{{range .J.Cases}}{
{{printf "%q" .Description}},
{{printf "%#v" .Input.Coins}},
{{printf "%d" .Input.Target}},
{{printf "%v" .Valid}},
{{printf "%#v" .IntSlice}},
},
{{end}}}
`
Version data entries
92 entries across 92 versions & 1 rubygems