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cluster_resolver: fix DiscoveryMechanismType marshal JSON (#4532)
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88
xds/internal/balancer/clusterresolver/balancerconfig/type_test.go
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/* | ||
* | ||
* Copyright 2021 gRPC 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. | ||
* | ||
*/ | ||
|
||
package balancerconfig | ||
|
||
import ( | ||
"encoding/json" | ||
"testing" | ||
|
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"github.com/google/go-cmp/cmp" | ||
) | ||
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func TestDiscoveryMechanismTypeMarshalJSON(t *testing.T) { | ||
tests := []struct { | ||
name string | ||
typ DiscoveryMechanismType | ||
want string | ||
}{ | ||
{ | ||
name: "eds", | ||
typ: DiscoveryMechanismTypeEDS, | ||
want: `"EDS"`, | ||
}, | ||
{ | ||
name: "dns", | ||
typ: DiscoveryMechanismTypeLogicalDNS, | ||
want: `"LOGICAL_DNS"`, | ||
}, | ||
} | ||
for _, tt := range tests { | ||
t.Run(tt.name, func(t *testing.T) { | ||
if got, err := json.Marshal(tt.typ); err != nil || string(got) != tt.want { | ||
t.Fatalf("DiscoveryMechanismTypeEDS.MarshalJSON() = (%v, %v), want (%s, nil)", string(got), err, tt.want) | ||
} | ||
}) | ||
} | ||
} | ||
func TestDiscoveryMechanismTypeUnmarshalJSON(t *testing.T) { | ||
tests := []struct { | ||
name string | ||
js string | ||
want DiscoveryMechanismType | ||
wantErr bool | ||
}{ | ||
{ | ||
name: "eds", | ||
js: `"EDS"`, | ||
want: DiscoveryMechanismTypeEDS, | ||
}, | ||
{ | ||
name: "dns", | ||
js: `"LOGICAL_DNS"`, | ||
want: DiscoveryMechanismTypeLogicalDNS, | ||
}, | ||
{ | ||
name: "error", | ||
js: `"1234"`, | ||
wantErr: true, | ||
}, | ||
} | ||
for _, tt := range tests { | ||
t.Run(tt.name, func(t *testing.T) { | ||
var got DiscoveryMechanismType | ||
err := json.Unmarshal([]byte(tt.js), &got) | ||
if (err != nil) != tt.wantErr { | ||
t.Fatalf("DiscoveryMechanismTypeEDS.UnmarshalJSON() error = %v, wantErr %v", err, tt.wantErr) | ||
} | ||
if diff := cmp.Diff(got, tt.want); diff != "" { | ||
t.Fatalf("DiscoveryMechanismTypeEDS.UnmarshalJSON() got unexpected output, diff (-got +want): %v", diff) | ||
} | ||
}) | ||
} | ||
} |