From a0e2204b7a3b30932f3234826670a14a974f48f6 Mon Sep 17 00:00:00 2001
From: alierkilic <erkilic.alican@gmail.com>
Date: Mon, 17 Jan 2022 12:32:26 +0300
Subject: [PATCH] Add unit test for match function in analytics controller

Signed-off-by: alierkilic <erkilic.alican@gmail.com>

Refactor unit test for match function

Signed-off-by: alierkilic <erkilic.alican@gmail.com>

Add unit test for match function in analytics controller
---
 .../analytics/analytics_controller_test.go    | 157 ++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 pkg/controller/analytics/analytics_controller_test.go

diff --git a/pkg/controller/analytics/analytics_controller_test.go b/pkg/controller/analytics/analytics_controller_test.go
new file mode 100644
index 000000000..c114ef108
--- /dev/null
+++ b/pkg/controller/analytics/analytics_controller_test.go
@@ -0,0 +1,157 @@
+package analytics
+
+import (
+	"testing"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+func TestMatch(t *testing.T) {
+	matchLabels := make(map[string]string)
+	matchLabels["key1"] = "value1"
+
+	unmatchLabels := make(map[string]string)
+	unmatchLabels["key2"] = "value2"
+
+	tests := []struct {
+		description   string
+		matchLabels   map[string]string
+		labelSelector metav1.LabelSelector
+		expect        bool
+	}{
+		{
+			description: "match labels",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels:      unmatchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{},
+			},
+			expect: false,
+		},
+		{
+			description: "match expression key2 exists",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key2",
+					Operator: "Exists",
+					Values:   []string{},
+				}},
+			},
+			expect: false,
+		},
+		{
+			description: "match expression key1 exists",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key1",
+					Operator: "Exists",
+					Values:   []string{},
+				}},
+			},
+			expect: true,
+		},
+		{
+			description: "match expression key1 doesNotExists",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key1",
+					Operator: "DoesNotExist",
+					Values:   []string{},
+				}},
+			},
+			expect: false,
+		},
+		{
+			description: "match expression key2 doesNotExists",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key2",
+					Operator: "DoesNotExist",
+					Values:   []string{},
+				}},
+			},
+			expect: true,
+		},
+		{
+			description: "match expression key2 in",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key2",
+					Operator: "In",
+					Values:   []string{},
+				}},
+			},
+			expect: false,
+		},
+		{
+			description: "match expression key1 in value1",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key1",
+					Operator: "In",
+					Values:   []string{"value1"},
+				}},
+			},
+			expect: true,
+		},
+		{
+			description: "match expression key1 in value2",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key1",
+					Operator: "In",
+					Values:   []string{"value2"},
+				}},
+			},
+			expect: false,
+		},
+		{
+			description: "match expression key1 notIn value1",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key1",
+					Operator: "NotIn",
+					Values:   []string{"value1"},
+				}},
+			},
+			expect: false,
+		},
+		{
+			description: "match expression key1 notIn Value2",
+			matchLabels: matchLabels,
+			labelSelector: metav1.LabelSelector{
+				MatchLabels: matchLabels,
+				MatchExpressions: []metav1.LabelSelectorRequirement{{
+					Key:      "key1",
+					Operator: "NotIn",
+					Values:   []string{"value2"},
+				}},
+			},
+			expect: true,
+		},
+	}
+
+	for _, test := range tests {
+		isMatched := match(test.labelSelector, test.matchLabels)
+
+		if isMatched != test.expect {
+			t.Errorf("%s: expect match %v actual match %v", test.description, test.expect, isMatched)
+		}
+	}
+}