add missing tests for slice utils

minikube/state_utils/slice_test.go

@@ -0,0 +1,79 @@
+package state_utils
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestSliceOrNil(t *testing.T) {
+	type args struct {
+		slice []string
+	}
+	tests := []struct {
+		name string
+		args args
+		want []string
+	}{
+		{
+			name: "Should return non nil slice of type T",
+			args: args{
+				slice: []string{"abc"},
+			},
+			want: []string{"abc"},
+		},
+		{
+			name: "Should return nil",
+			args: args{
+				slice: []string{},
+			},
+			want: nil,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := SliceOrNil(tt.args.slice); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("SliceOrNil() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestReadSliceState(t *testing.T) {
+	type args struct {
+		slice interface{}
+	}
+	tests := []struct {
+		name string
+		args args
+		want []string
+	}{
+		{
+			name: "Should return string slice",
+			args: args{
+				slice: []string{"abc"},
+			},
+			want: []string{"abc"},
+		},
+		{
+			name: "Should construct string array",
+			args: args{
+				slice: []interface{}{"abc"},
+			},
+			want: []string{"abc"},
+		},
+		{
+			name: "Should return empty string array on unexpected type",
+			args: args{
+				slice: []int{},
+			},
+			want: []string{},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ReadSliceState(tt.args.slice); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("ReadSliceState() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}