Sha256: b3cf89ee79e4af549f56475c3eb3191915820a17bc23d39d4b68d52082067915

Contents?: true

Size: 1.34 KB

Versions: 92

Compression:

Stored size: 1.34 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("collatz-conjecture", &j, t); err != nil {
		log.Fatal(err)
	}
}

type OneCase struct {
	Description string
	Input       struct {
		Number int
	}
	Expected interface{}
}

// The JSON structure we expect to be able to unmarshal into
type js struct {
	Cases []OneCase
}

func (c OneCase) Valid() bool {
	valid, _ := determineExpected(c.Expected)
	return valid
}

func (c OneCase) Answer() int {
	_, answer := determineExpected(c.Expected)
	return answer
}

// determineExpected examines an .Expected interface{} object and determines
// whether a test case is valid(bool) and has an answer or expects an error.
// returning valid and answer.
func determineExpected(expected interface{}) (bool, int) {
	ans, ok := expected.(float64)
	if ok {
		return ok, int(ans)
	}
	return false, 0
}

// template applied to above data structure generates the Go test cases
var tmpl = `package collatzconjecture

{{.Header}}

var testCases = []struct {
	description string
	input       int
	expectError bool
	expected    int
}{
{{range .J.Cases}}{
	description:	"{{.Description}}",
	input:		{{.Input.Number}},
{{if .Valid}} expected:	{{.Answer}},
{{- else}} expectError: true,
{{- end}}
},
{{end}}}
`

Version data entries

92 entries across 92 versions & 1 rubygems

Version Path
trackler-2.2.1.180 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.179 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.178 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.177 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.176 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.175 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.174 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.173 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.172 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.171 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.170 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.169 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.167 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.166 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.165 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.164 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.163 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.162 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.161 tracks/go/exercises/collatz-conjecture/.meta/gen.go
trackler-2.2.1.160 tracks/go/exercises/collatz-conjecture/.meta/gen.go