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// Copyright 2025 CUE 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
//
// https://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 cueexperiment
import (
"reflect"
"strings"
"testing"
)
func TestParseConfig(t *testing.T) {
// Define a test struct with experiment tags
type testFlags struct {
Feature1 bool `experiment:"since:v0.1.0"`
Feature2 bool `experiment:"since:v0.2.0,accepted:v1.0.0"`
Feature3 bool `experiment:"since:v0.3.0,rejected:v0.5.0"`
Feature4 bool `experiment:"since:v0.1.0,accepted:v0.4.0"`
}
tests := []struct {
name string
version string
experiments string
want testFlags
wantErr bool
errSubstr string
}{{
name: "empty_inputs",
version: "",
experiments: "",
want: testFlags{Feature2: true, Feature4: true},
wantErr: false,
}, {
name: "enable_feature1",
version: "v0.1.0",
experiments: "feature1",
want: testFlags{Feature1: true},
wantErr: false,
}, {
name: "enable_feature1_no_version",
experiments: "feature1",
want: testFlags{Feature1: true, Feature2: true, Feature4: true},
wantErr: false,
}, {
name: "enable_accepted_feature2_no_version",
experiments: "feature2",
want: testFlags{Feature2: true, Feature4: true},
wantErr: false,
}, {
name: "enable_rejected_feature3_no_version",
experiments: "feature3",
want: testFlags{Feature1: true, Feature2: true, Feature4: true},
wantErr: true,
errSubstr: `cannot set rejected experiment "feature3"`,
}, {
name: "feature_not_available_yet",
version: "v0.0.9",
experiments: "feature1",
want: testFlags{Feature2: true, Feature4: true},
wantErr: true,
errSubstr: "cannot set experiment \"feature1\" before version v0.1.0",
}, {
name: "rejected_feature",
version: "v0.5.0",
experiments: "feature3",
want: testFlags{Feature2: true, Feature4: true},
wantErr: true,
errSubstr: "cannot set rejected experiment \"feature3\"",
}, {
name: "accepted_feature_automatically_enabled",
version: "v1.0.0",
experiments: "",
want: testFlags{Feature2: true, Feature4: true},
wantErr: false,
}, {
name: "unknown_experiment",
version: "v1.0.0",
experiments: "nonexistent",
want: testFlags{Feature2: true, Feature4: true},
wantErr: true,
errSubstr: "unknown experiment \"nonexistent\"",
}, {
name: "multiple_experiments",
version: "v0.3.0",
experiments: "feature1,feature2,feature3",
want: testFlags{Feature1: true, Feature2: true, Feature3: true},
wantErr: false,
}, {
name: "case_insensitive",
version: "v0.3.0",
experiments: "FEATURE1",
want: testFlags{Feature1: true, Feature2: true, Feature4: true},
wantErr: true,
errSubstr: `unknown experiment "FEATURE1"`,
}, {
name: "experiments_with_spaces",
version: "v0.3.0",
experiments: " feature1 , feature2 ",
want: testFlags{Feature1: true, Feature2: true},
wantErr: false,
}, {
name: "multiple_errors",
version: "v0.0.9",
experiments: "feature1,feature3,nonexistent",
want: testFlags{Feature2: true, Feature4: true},
wantErr: true,
errSubstr: "cannot set experiment",
}}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var got testFlags
m := parseExperiments(tt.experiments)
err := parseConfig(&got, tt.version, m)
if tt.wantErr {
if err == nil {
t.Errorf("parseConfig() error = nil, want error containing %q", tt.errSubstr)
return
}
if !strings.Contains(err.Error(), tt.errSubstr) {
t.Errorf("parseConfig() error = %v, want error containing %q", err, tt.errSubstr)
}
return
}
if err != nil {
t.Errorf("parseConfig() unexpected error = %v", err)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("parseConfig() = %v, want %v", got, tt.want)
}
})
}
}
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