Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

tests: add tests for go/slice #14989

Merged
merged 8 commits into from
Jan 25, 2024
Merged
198 changes: 198 additions & 0 deletions go/slice/slice_test.go
Original file line number Diff line number Diff line change
@@ -0,0 +1,198 @@
/*
Copyright 2024 The Vitess Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package slice

import (
"errors"
"testing"

"github.com/stretchr/testify/assert"
)

func TestAll(t *testing.T) {
testCases := []struct {
name string
input []int
fn func(int) bool
expected bool
}{
{
name: "EmptySlice",
input: []int{},
fn: func(i int) bool { return i > 0 },
expected: true,
},
{
name: "AllElementsTrue",
input: []int{1, 2, 3},
fn: func(i int) bool { return i > 0 },
expected: true,
},
{
name: "SomeElementsFalse",
input: []int{1, 2, 0},
fn: func(i int) bool { return i > 0 },
expected: false,
},
{
name: "SingleElementFalse",
input: []int{0},
fn: func(i int) bool { return i > 0 },
expected: false,
},
}

for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
result := All(tc.input, tc.fn)
assert.Equal(t, tc.expected, result)
})
}
}
systay marked this conversation as resolved.
Show resolved Hide resolved

func TestAny(t *testing.T) {
testCases := []struct {
name string
input []int
fn func(int) bool
expected bool
}{
{
name: "ReturnsTrue",
input: []int{1, 2, 3, 4, 5},
fn: func(n int) bool { return n == 3 },
expected: true,
},
{
name: "EmptySliceInput",
input: []int{},
fn: func(n int) bool { return n > 0 },
expected: false,
},
}

for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
result := Any(tc.input, tc.fn)
assert.Equal(t, tc.expected, result)
})
}
}

func TestMap(t *testing.T) {
testCases := []struct {
name string
input []int
fn func(int) int
expected []int
}{
{
name: "AppliesFunction",
input: []int{1, 2, 3, 4, 5},
fn: func(n int) int { return n * 2 },
expected: []int{2, 4, 6, 8, 10},
},
{
name: "EmptySliceInput",
input: nil,
fn: func(n int) int { return n },
expected: nil,
},
}

for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
result := Map(tc.input, tc.fn)
assert.Equal(t, tc.expected, result)
})
}
}

func TestFilter(t *testing.T) {
testCases := []struct {
name string
input []int
fn func(int) bool
expected []int
}{
{
name: "Filtering",
input: []int{1, 2, 3, 4, 5},
fn: func(i int) bool { return i%2 == 0 },
expected: []int{2, 4},
},
{
name: "AllElementsFilteredOut",
input: []int{1, 3, 5},
fn: func(i int) bool { return i%2 == 0 },
expected: []int{},
},
{
name: "EmptySliceInput",
input: nil,
fn: func(n int) bool { return n > 0 },
expected: nil,
},
}

for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
result := Filter(tc.input, tc.fn)
assert.Equal(t, tc.expected, result)
})
}
}

func TestMapWithError(t *testing.T) {
testCases := []struct {
name string
input []int
fn func(int) (int, error)
expected []int
expectedErr string
}{
{
name: "SuccessfulMapping",
input: []int{1, 2, 3},
fn: func(i int) (int, error) { return i * 2, nil },
expected: []int{2, 4, 6},
},
{
name: "ErrorReturned",
input: []int{1, 2, 3},
fn: func(i int) (int, error) { return 0, errors.New("error") },
expectedErr: "error",
},
{
name: "EmptySliceInput",
input: nil,
fn: func(n int) (int, error) { return n, nil },
expected: nil,
},
}

for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
result, err := MapWithError(tc.input, tc.fn)
if tc.expectedErr != "" {
assert.EqualError(t, err, tc.expectedErr)
} else {
assert.Equal(t, tc.expected, result)
}
})
}
}
Loading