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pkg/api/testing: add deepcopy smoke test to roundtrip test #41466
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86 changes: 86 additions & 0 deletions
86
staging/src/k8s.io/apimachinery/pkg/api/testing/valuefuzz.go
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,86 @@ | ||
/* | ||
Copyright 2017 The Kubernetes Authors. | ||
|
||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
|
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http://www.apache.org/licenses/LICENSE-2.0 | ||
|
||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package testing | ||
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import ( | ||
"reflect" | ||
) | ||
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// ValueFuzz recursively changes all basic type values in an object. Any kind of references will not | ||
// be touch, i.e. the addresses of slices, maps, pointers will stay unchanged. | ||
func ValueFuzz(obj interface{}) { | ||
valueFuzz(reflect.ValueOf(obj)) | ||
} | ||
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func valueFuzz(obj reflect.Value) { | ||
switch obj.Kind() { | ||
case reflect.Array: | ||
for i := 0; i < obj.Len(); i++ { | ||
valueFuzz(obj.Index(i)) | ||
} | ||
case reflect.Slice: | ||
if obj.IsNil() { | ||
// TODO: set non-nil value | ||
} else { | ||
for i := 0; i < obj.Len(); i++ { | ||
valueFuzz(obj.Index(i)) | ||
} | ||
} | ||
case reflect.Interface, reflect.Ptr: | ||
if obj.IsNil() { | ||
// TODO: set non-nil value | ||
} else { | ||
valueFuzz(obj.Elem()) | ||
} | ||
case reflect.Struct: | ||
for i, n := 0, obj.NumField(); i < n; i++ { | ||
valueFuzz(obj.Field(i)) | ||
} | ||
case reflect.Map: | ||
if obj.IsNil() { | ||
// TODO: set non-nil value | ||
} else { | ||
for _, k := range obj.MapKeys() { | ||
// map values are not addressable. We need a copy. | ||
v := obj.MapIndex(k) | ||
copy := reflect.New(v.Type()) | ||
copy.Elem().Set(v) | ||
valueFuzz(copy.Elem()) | ||
obj.SetMapIndex(k, copy.Elem()) | ||
} | ||
// TODO: set some new value | ||
} | ||
case reflect.Func: // ignore, we don't have function types in our API | ||
default: | ||
if !obj.CanSet() { | ||
return | ||
} | ||
switch obj.Kind() { | ||
case reflect.String: | ||
obj.SetString(obj.String() + "x") | ||
case reflect.Bool: | ||
obj.SetBool(!obj.Bool()) | ||
case reflect.Float32, reflect.Float64: | ||
obj.SetFloat(obj.Float()*2.0 + 1.0) | ||
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int: | ||
obj.SetInt(obj.Int() + 1) | ||
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint: | ||
obj.SetUint(obj.Uint() + 1) | ||
default: | ||
} | ||
} | ||
} |
73 changes: 73 additions & 0 deletions
73
staging/src/k8s.io/apimachinery/pkg/api/testing/valuefuzz_test.go
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,73 @@ | ||
/* | ||
Copyright 2017 The Kubernetes Authors. | ||
|
||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
|
||
http://www.apache.org/licenses/LICENSE-2.0 | ||
|
||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
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package testing | ||
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import "testing" | ||
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func TestValueFuzz(t *testing.T) { | ||
type ( | ||
Y struct { | ||
I int | ||
B bool | ||
F float32 | ||
U uint | ||
} | ||
X struct { | ||
Ptr *X | ||
Y Y | ||
Map map[string]int | ||
Slice []int | ||
} | ||
) | ||
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x := X{ | ||
Ptr: &X{}, | ||
Map: map[string]int{"foo": 42}, | ||
Slice: []int{1,2,3}, | ||
} | ||
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p := x.Ptr | ||
m := x.Map | ||
s := x.Slice | ||
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ValueFuzz(x) | ||
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if x.Ptr.Y.I == 0 { | ||
t.Errorf("x.Ptr.Y.I should have changed") | ||
} | ||
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if x.Map["foo"] == 42 { | ||
t.Errorf("x.Map[foo] should have changed") | ||
} | ||
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if x.Slice[0] == 1 { | ||
t.Errorf("x.Slice[0] should have changed") | ||
} | ||
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if x.Ptr != p { | ||
t.Errorf("x.Ptr changed") | ||
} | ||
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m["foo"] = 7 | ||
if x.Map["foo"] != m["foo"] { | ||
t.Errorf("x.Map changed") | ||
} | ||
s[0] = 7 | ||
if x.Slice[0] != s[0] { | ||
t.Errorf("x.Slice changed") | ||
} | ||
} |
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Clever.