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| 1 | +/* |
| 2 | +Copyright 2024 The Kubernetes Authors. |
| 3 | +
|
| 4 | +Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +you may not use this file except in compliance with the License. |
| 6 | +You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | +Unless required by applicable law or agreed to in writing, software |
| 11 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +See the License for the specific language governing permissions and |
| 14 | +limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package featuregate_test |
| 18 | + |
| 19 | +import ( |
| 20 | + . "github.com/onsi/ginkgo" |
| 21 | + . "github.com/onsi/gomega" |
| 22 | + |
| 23 | + "sigs.k8s.io/controller-tools/pkg/featuregate" |
| 24 | +) |
| 25 | + |
| 26 | +var _ = Describe("FeatureGate Evaluator", func() { |
| 27 | + var evaluator *featuregate.FeatureGateEvaluator |
| 28 | + var gates featuregate.FeatureGateMap |
| 29 | + |
| 30 | + BeforeEach(func() { |
| 31 | + gates = featuregate.FeatureGateMap{ |
| 32 | + "alpha": true, |
| 33 | + "beta": false, |
| 34 | + "gamma": true, |
| 35 | + "delta": false, |
| 36 | + } |
| 37 | + evaluator = featuregate.NewFeatureGateEvaluator(gates) |
| 38 | + }) |
| 39 | + |
| 40 | + Describe("NewFeatureGateEvaluator", func() { |
| 41 | + It("should create evaluator with provided gates", func() { |
| 42 | + Expect(evaluator).NotTo(BeNil()) |
| 43 | + }) |
| 44 | + }) |
| 45 | + |
| 46 | + Describe("FeatureGateMap.IsEnabled", func() { |
| 47 | + It("should return true for enabled gates", func() { |
| 48 | + Expect(gates.IsEnabled("alpha")).To(BeTrue()) |
| 49 | + Expect(gates.IsEnabled("gamma")).To(BeTrue()) |
| 50 | + }) |
| 51 | + |
| 52 | + It("should return false for disabled gates", func() { |
| 53 | + Expect(gates.IsEnabled("beta")).To(BeFalse()) |
| 54 | + Expect(gates.IsEnabled("delta")).To(BeFalse()) |
| 55 | + }) |
| 56 | + |
| 57 | + It("should return false for unknown gates", func() { |
| 58 | + Expect(gates.IsEnabled("unknown")).To(BeFalse()) |
| 59 | + }) |
| 60 | + }) |
| 61 | + |
| 62 | + Describe("EvaluateExpression", func() { |
| 63 | + Context("with empty expressions", func() { |
| 64 | + It("should return true for empty string", func() { |
| 65 | + Expect(evaluator.EvaluateExpression("")).To(BeTrue()) |
| 66 | + }) |
| 67 | + }) |
| 68 | + |
| 69 | + Context("with single gate expressions", func() { |
| 70 | + It("should evaluate enabled gates correctly", func() { |
| 71 | + Expect(evaluator.EvaluateExpression("alpha")).To(BeTrue()) |
| 72 | + Expect(evaluator.EvaluateExpression("gamma")).To(BeTrue()) |
| 73 | + }) |
| 74 | + |
| 75 | + It("should evaluate disabled gates correctly", func() { |
| 76 | + Expect(evaluator.EvaluateExpression("beta")).To(BeFalse()) |
| 77 | + Expect(evaluator.EvaluateExpression("delta")).To(BeFalse()) |
| 78 | + }) |
| 79 | + |
| 80 | + It("should evaluate unknown gates as false", func() { |
| 81 | + Expect(evaluator.EvaluateExpression("unknown")).To(BeFalse()) |
| 82 | + }) |
| 83 | + }) |
| 84 | + |
| 85 | + Context("with OR expressions", func() { |
| 86 | + It("should return true when any gate is enabled", func() { |
| 87 | + Expect(evaluator.EvaluateExpression("alpha|beta")).To(BeTrue()) |
| 88 | + Expect(evaluator.EvaluateExpression("beta|gamma")).To(BeTrue()) |
| 89 | + Expect(evaluator.EvaluateExpression("alpha|gamma")).To(BeTrue()) |
| 90 | + }) |
| 91 | + |
| 92 | + It("should return false when all gates are disabled", func() { |
| 93 | + Expect(evaluator.EvaluateExpression("beta|delta")).To(BeFalse()) |
| 94 | + }) |
| 95 | + |
| 96 | + It("should handle multiple OR gates", func() { |
| 97 | + Expect(evaluator.EvaluateExpression("beta|delta|alpha")).To(BeTrue()) |
| 98 | + Expect(evaluator.EvaluateExpression("beta|delta|unknown")).To(BeFalse()) |
| 99 | + }) |
| 100 | + }) |
| 101 | + |
| 102 | + Context("with AND expressions", func() { |
| 103 | + It("should return true when all gates are enabled", func() { |
| 104 | + Expect(evaluator.EvaluateExpression("alpha&gamma")).To(BeTrue()) |
| 105 | + }) |
| 106 | + |
| 107 | + It("should return false when any gate is disabled", func() { |
| 108 | + Expect(evaluator.EvaluateExpression("alpha&beta")).To(BeFalse()) |
| 109 | + Expect(evaluator.EvaluateExpression("beta&gamma")).To(BeFalse()) |
| 110 | + Expect(evaluator.EvaluateExpression("beta&delta")).To(BeFalse()) |
| 111 | + }) |
| 112 | + |
| 113 | + It("should handle multiple AND gates", func() { |
| 114 | + Expect(evaluator.EvaluateExpression("alpha&gamma&beta")).To(BeFalse()) |
| 115 | + Expect(evaluator.EvaluateExpression("alpha&gamma&unknown")).To(BeFalse()) |
| 116 | + }) |
| 117 | + }) |
| 118 | + |
| 119 | + Context("with complex expressions", func() { |
| 120 | + It("should handle gates with special characters", func() { |
| 121 | + gatesWithSpecial := featuregate.FeatureGateMap{ |
| 122 | + "my-feature": true, |
| 123 | + "under_score": false, |
| 124 | + "v1beta1": true, |
| 125 | + } |
| 126 | + specialEvaluator := featuregate.NewFeatureGateEvaluator(gatesWithSpecial) |
| 127 | + |
| 128 | + Expect(specialEvaluator.EvaluateExpression("my-feature")).To(BeTrue()) |
| 129 | + Expect(specialEvaluator.EvaluateExpression("under_score")).To(BeFalse()) |
| 130 | + Expect(specialEvaluator.EvaluateExpression("v1beta1")).To(BeTrue()) |
| 131 | + Expect(specialEvaluator.EvaluateExpression("my-feature|under_score")).To(BeTrue()) |
| 132 | + Expect(specialEvaluator.EvaluateExpression("my-feature&v1beta1")).To(BeTrue()) |
| 133 | + }) |
| 134 | + }) |
| 135 | + }) |
| 136 | +}) |
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