secret-handshake: create test case generator

exercises/secret-handshake/.meta/gen.go

@@ -0,0 +1,49 @@
+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("secret-handshake", &j, t); err != nil {
+		log.Fatal(err)
+	}
+}
+
+// The JSON structure we expect to be able to unmarshal into
+type js struct {
+	Cases []struct {
+		Description string
+		Cases       []struct {
+			Description string
+			Property    string
+			Input       uint
+			Expected    []string
+		}
+	}
+}
+
+// template applied to above data structure generates the Go test cases
+var tmpl = `package secret
+
+{{.Header}}
+
+type secretHandshakeTest struct {
+	code uint
+	h []string
+}
+
+var tests = []secretHandshakeTest {
+{{range .J.Cases}} {{range .Cases}}{ {{ .Input }}, {{printf "%#v" .Expected }},
+},
+{{end}}{{end}}
+}
+`

exercises/secret-handshake/cases_test.go

@@ -0,0 +1,24 @@
+package secret
+
+// Source: exercism/x-common
+// Commit: 69c8700 secret-handshake: remove tests for numbers > 31 (#794)
+// x-common version: 1.1.0
+
+type secretHandshakeTest struct {
+	code uint
+	h    []string
+}
+
+var tests = []secretHandshakeTest{
+	{1, []string{"wink"}},
+	{2, []string{"double blink"}},
+	{4, []string{"close your eyes"}},
+	{8, []string{"jump"}},
+	{3, []string{"wink", "double blink"}},
+	{19, []string{"double blink", "wink"}},
+	{24, []string{"jump"}},
+	{16, []string{}},
+	{15, []string{"wink", "double blink", "close your eyes", "jump"}},
+	{31, []string{"jump", "close your eyes", "double blink", "wink"}},
+	{0, []string{}},
+}

exercises/secret-handshake/example.go

@@ -1,6 +1,6 @@
 package secret
 
-const testVersion = 1
+const testVersion = 2
 
 var signals = []string{"wink", "double blink", "close your eyes", "jump"}
 

exercises/secret-handshake/secret_handshake_test.go

@@ -5,23 +5,7 @@ import (
 	"testing"
 )
 
-const targetTestVersion = 1
-
-var tests = []struct {
-	code uint
-	h    []string
-}{
-	{1, []string{"wink"}},
-	{2, []string{"double blink"}},
-	{4, []string{"close your eyes"}},
-	{8, []string{"jump"}},
-	{3, []string{"wink", "double blink"}},
-	{19, []string{"double blink", "wink"}},
-	{31, []string{"jump", "close your eyes", "double blink", "wink"}},
-	{0, nil},
-	{32, nil},
-	{33, []string{"wink"}},
-}
+const targetTestVersion = 2
 
 func TestTestVersion(t *testing.T) {
 	if testVersion != targetTestVersion {