fix: report correct values in kube_pod_status_reason metric (added tests)

Author: carlosmorenokm1

internal/store/pod_test.go

@@ -2290,3 +2290,85 @@ func BenchmarkPodStore(b *testing.B) {
 		}
 	}
 }
+
+func TestGetPodStatusReasonValue(t *testing.T) {
+	reason := "TestReason"
+
+	tests := []struct {
+		name string
+		pod  *v1.Pod
+		want float64
+	}{
+		{
+			name: "matches Status.Reason",
+			pod: &v1.Pod{
+				Status: v1.PodStatus{
+					Reason: "TestReason",
+				},
+			},
+			want: 1,
+		},
+		{
+			name: "matches condition Reason",
+			pod: &v1.Pod{
+				Status: v1.PodStatus{
+					Conditions: []v1.PodCondition{
+						{
+							Reason: "TestReason",
+						},
+					},
+				},
+			},
+			want: 1,
+		},
+		{
+			name: "matches container terminated Reason",
+			pod: &v1.Pod{
+				Status: v1.PodStatus{
+					ContainerStatuses: []v1.ContainerStatus{
+						{
+							State: v1.ContainerState{
+								Terminated: &v1.ContainerStateTerminated{
+									Reason: "TestReason",
+								},
+							},
+						},
+					},
+				},
+			},
+			want: 1,
+		},
+		{
+			name: "no match returns 0",
+			pod: &v1.Pod{
+				Status: v1.PodStatus{
+					Reason: "OtherReason",
+					Conditions: []v1.PodCondition{
+						{
+							Reason: "NotTestReason",
+						},
+					},
+					ContainerStatuses: []v1.ContainerStatus{
+						{
+							State: v1.ContainerState{
+								Terminated: &v1.ContainerStateTerminated{
+									Reason: "AnotherReason",
+								},
+							},
+						},
+					},
+				},
+			},
+			want: 0,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := getPodStatusReasonValue(tt.pod, reason)
+			if got != tt.want {
+				t.Errorf("getPodStatusReasonValue() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}