package moves

import (
	"encoding/json"
	"testing"
)

func TestCheckZeroValueFails(t *testing.T) {
	var c Check
	if c.OK {
		t.Fatal("a zero Check must not be OK")
	}
	if c.Reason != "" {
		t.Fatalf("zero reason %q", c.Reason)
	}
}

func TestCheckJSONWireNames(t *testing.T) {
	b, err := json.Marshal(Check{OK: true, Reason: "r"})
	if err != nil {
		t.Fatal(err)
	}
	if string(b) != `{"ok":true,"reason":"r"}` {
		t.Fatalf("wire form %s", b)
	}
	var back Check
	if err := json.Unmarshal([]byte(`{"ok":false,"reason":"why"}`), &back); err != nil {
		t.Fatal(err)
	}
	if back.OK || back.Reason != "why" {
		t.Fatalf("round trip %+v", back)
	}
	var zero Check
	if err := json.Unmarshal([]byte(`{}`), &zero); err != nil || zero.OK {
		t.Fatalf("empty object read as %+v, %v", zero, err)
	}
}