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Add Test Cases for slices package (kubernetes-sigs#1084)
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* Add Test Cases for slices package

Signed-off-by: Joeyyy09 <imt_2021063@iiitm.ac.in>

* Fix linting issues

Signed-off-by: Joeyyy09 <imt_2021063@iiitm.ac.in>

* Fix linting issues

Signed-off-by: Joeyyy09 <imt_2021063@iiitm.ac.in>

---------

Signed-off-by: Joeyyy09 <imt_2021063@iiitm.ac.in>
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@joeyyy09
joeyyy09 committed May 29, 2024
1 parent 194ceb2 commit 837d3e8
Showing 1 changed file with 328 additions and 8 deletions.
336 changes: 328 additions & 8 deletions pkg/utils/slices/slices_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,16 +17,18 @@ limitations under the License.
package slices

import (
"errors"
"fmt"
"reflect"
"testing"
)

func TestContains(t *testing.T) {
type args[S interface{ ~[]T }, T comparable] struct {
type args[S ~[]T, T comparable] struct {
s S
t T
}
type testCase[S interface{ ~[]T }, T comparable] struct {
type testCase[S ~[]T, T comparable] struct {
name string
args args[S, T]
want bool
Expand Down Expand Up @@ -59,11 +61,11 @@ func TestContains(t *testing.T) {
}

func TestFilter(t *testing.T) {
type args[S interface{ ~[]T }, T any] struct {
type args[S ~[]T, T any] struct {
s S
f func(T) bool
}
type testCase[S interface{ ~[]T }, T any] struct {
type testCase[S ~[]T, T any] struct {
name string
args args[S, T]
want []T
Expand All @@ -90,11 +92,11 @@ func TestFilter(t *testing.T) {
}

func TestFind(t *testing.T) {
type args[S interface{ ~[]T }, T any] struct {
type args[S ~[]T, T any] struct {
s S
f func(T) bool
}
type testCase[S interface{ ~[]T }, T any] struct {
type testCase[S ~[]T, T any] struct {
name string
args args[S, T]
wantT T
Expand Down Expand Up @@ -127,11 +129,11 @@ func TestFind(t *testing.T) {
}

func TestMap(t *testing.T) {
type args[S interface{ ~[]T }, T any, O any] struct {
type args[S ~[]T, T any, O any] struct {
s S
f func(T) O
}
type testCase[S interface{ ~[]T }, T any, O any] struct {
type testCase[S ~[]T, T any, O any] struct {
name string
args args[S, T, O]
want []O
Expand All @@ -156,3 +158,321 @@ func TestMap(t *testing.T) {
})
}
}

func TestMapWithError(t *testing.T) {
type args[S ~[]T, T any, O any] struct {
s S
f func(T) (O, error)
}
type testCase[S ~[]T, T any, O any] struct {
name string
args args[S, T, O]
want []O
wantErr bool
}
tests := []testCase[[]string, string, int]{
{
name: "test map with error no error",
args: args[[]string, string, int]{
s: []string{"a", "b", "c"},
f: func(s string) (int, error) {
return len(s), nil
},
},
want: []int{1, 1, 1},
wantErr: false,
},
{
name: "test map with error with error",
args: args[[]string, string, int]{
s: []string{"a", "b", "c"},
f: func(s string) (int, error) {
if s == "b" {
return 0, errors.New("error")
}
return len(s), nil
},
},
want: nil,
wantErr: true,
},
{
name: "test map with error empty slice",
args: args[[]string, string, int]{
s: []string{},
f: func(s string) (int, error) {
return len(s), nil
},
},
want: []int{},
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := MapWithError(tt.args.s, tt.args.f)
if (err != nil) != tt.wantErr {
t.Errorf("MapWithError() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("MapWithError() = %v, want %v", got, tt.want)
}
})
}
}

func TestFilterAndMap(t *testing.T) {
type args[S ~[]T, T any, O any] struct {
s S
f func(T) (O, bool)
}
type testCase[S ~[]T, T any, O any] struct {
name string
args args[S, T, O]
want []O
}
tests := []testCase[[]string, string, int]{
{
name: "test filter and map",
args: args[[]string, string, int]{
s: []string{"a", "b", "c"},
f: func(s string) (int, bool) {
if s == "b" {
return 2, true
}
return 0, false
},
},
want: []int{2},
},
{
name: "test filter and map no match",
args: args[[]string, string, int]{
s: []string{"a", "b", "c"},
f: func(s string) (int, bool) {
return 0, false
},
},
want: []int{},
},
{
name: "test filter and map empty slice",
args: args[[]string, string, int]{
s: []string{},
f: func(s string) (int, bool) {
return 0, false
},
},
want: []int{},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := FilterAndMap(tt.args.s, tt.args.f); !reflect.DeepEqual(got, tt.want) {
t.Errorf("FilterAndMap() = %v, want %v", got, tt.want)
}
})
}
}

func TestUnique(t *testing.T) {
type args[S ~[]T, T comparable] struct {
s S
}
type testCase[S ~[]T, T comparable] struct {
name string
args args[S, T]
want []T
}
tests := []testCase[[]int, int]{
{
name: "test unique with duplicates",
args: args[[]int, int]{
s: []int{1, 2, 2, 3, 4, 4, 4, 5},
},
want: []int{1, 2, 3, 4, 5},
},
{
name: "test unique without duplicates",
args: args[[]int, int]{
s: []int{1, 2, 3, 4, 5},
},
want: []int{1, 2, 3, 4, 5},
},
{
name: "test unique empty slice",
args: args[[]int, int]{
s: []int{},
},
want: []int{},
},
{
name: "test unique single element",
args: args[[]int, int]{
s: []int{1},
},
want: []int{1},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := Unique(tt.args.s); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Unique() = %v, want %v", got, tt.want)
}
})
}
}

func TestEqual(t *testing.T) {
type args[S ~[]T, T comparable] struct {
s1 S
s2 S
}
type testCase[S ~[]T, T comparable] struct {
name string
args args[S, T]
want bool
}
tests := []testCase[[]int, int]{
{
name: "test equal slices",
args: args[[]int, int]{
s1: []int{1, 2, 3, 4, 5},
s2: []int{1, 2, 3, 4, 5},
},
want: true,
},
{
name: "test not equal slices different lengths",
args: args[[]int, int]{
s1: []int{1, 2, 3, 4, 5},
s2: []int{1, 2, 3, 4},
},
want: false,
},
{
name: "test not equal slices different elements",
args: args[[]int, int]{
s1: []int{1, 2, 3, 4, 5},
s2: []int{1, 2, 3, 4, 6},
},
want: false,
},
{
name: "test equal empty slices",
args: args[[]int, int]{
s1: []int{},
s2: []int{},
},
want: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := Equal(tt.args.s1, tt.args.s2); got != tt.want {
t.Errorf("Equal() = %v, want %v", got, tt.want)
}
})
}
}

func TestReverse(t *testing.T) {
type args[S ~[]T, T any] struct {
s S
}
type testCase[S ~[]T, T any] struct {
name string
args args[S, T]
want []T
}
tests := []testCase[[]int, int]{
{
name: "test reverse",
args: args[[]int, int]{
s: []int{1, 2, 3, 4, 5},
},
want: []int{5, 4, 3, 2, 1},
},
{
name: "test reverse empty slice",
args: args[[]int, int]{
s: []int{},
},
want: []int{},
},
{
name: "test reverse single element",
args: args[[]int, int]{
s: []int{1},
},
want: []int{1},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := Reverse(tt.args.s); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Reverse() = %v, want %v", got, tt.want)
}
})
}
}

func TestGroupBy(t *testing.T) {
type args[S ~[]T, T any, K comparable] struct {
s S
f func(T) K
}
type testCase[S ~[]T, T any, K comparable] struct {
name string
args args[S, T, K]
want map[K][]T
}
tests := []testCase[[]string, string, string]{
{
name: "test group by first letter",
args: args[[]string, string, string]{
s: []string{"apple", "apricot", "banana", "cherry"},
f: func(s string) string {
return string(s[0])
},
},
want: map[string][]string{
"a": {"apple", "apricot"},
"b": {"banana"},
"c": {"cherry"},
},
},
{
name: "test group by length",
args: args[[]string, string, string]{
s: []string{"apple", "banana", "cherry", "date"},
f: func(s string) string {
return fmt.Sprintf("%d", len(s))
},
},
want: map[string][]string{
"5": {"apple"},
"6": {"banana", "cherry"},
"4": {"date"},
},
},
{
name: "test group by empty slice",
args: args[[]string, string, string]{
s: []string{},
f: func(s string) string {
return fmt.Sprintf("%d", len(s))
},
},
want: map[string][]string{},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := GroupBy(tt.args.s, tt.args.f); !reflect.DeepEqual(got, tt.want) {
t.Errorf("GroupBy() = %v, want %v", got, tt.want)
}
})
}
}

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