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|
package function
import (
"testing"
"github.com/zclconf/go-cty/cty"
)
func TestUnpredictable(t *testing.T) {
f := New(&Spec{
Params: []Parameter{
{
Name: "fixed",
Type: cty.Bool,
},
},
VarParam: &Parameter{
Name: "variadic",
Type: cty.String,
},
Type: func(args []cty.Value) (cty.Type, error) {
if len(args) == 1 {
return cty.Bool, nil
} else {
return cty.String, nil
}
},
Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
return cty.NullVal(retType), nil
},
})
uf := Unpredictable(f)
{
predVal, err := f.Call([]cty.Value{cty.True})
if err != nil {
t.Fatal(err)
}
if !predVal.RawEquals(cty.NullVal(cty.Bool)) {
t.Fatal("wrong predictable result")
}
}
t.Run("argument type error", func(t *testing.T) {
_, err := uf.Call([]cty.Value{cty.StringVal("hello")})
if err == nil {
t.Fatal("call successful; want error")
}
})
t.Run("type check 1", func(t *testing.T) {
ty, err := uf.ReturnTypeForValues([]cty.Value{cty.True})
if err != nil {
t.Fatal(err)
}
if !ty.Equals(cty.Bool) {
t.Errorf("wrong type %#v; want %#v", ty, cty.Bool)
}
})
t.Run("type check 2", func(t *testing.T) {
ty, err := uf.ReturnTypeForValues([]cty.Value{cty.True, cty.StringVal("hello")})
if err != nil {
t.Fatal(err)
}
if !ty.Equals(cty.String) {
t.Errorf("wrong type %#v; want %#v", ty, cty.String)
}
})
t.Run("call", func(t *testing.T) {
v, err := uf.Call([]cty.Value{cty.True})
if err != nil {
t.Fatal(err)
}
if !v.RawEquals(cty.UnknownVal(cty.Bool)) {
t.Errorf("wrong result %#v; want %#v", v, cty.UnknownVal(cty.Bool))
}
})
}
|
