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randomness_test.go
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// Copyright 2021 The randomness Authors. All rights reserved.
// Use of this source code is governed by a MIT
// license that can be found in the LICENSE file.
package randomness
import "testing"
func Test_randomPortGenerator(t *testing.T) {
type args struct {
min int
max int
maxRetry int
}
tests := []struct {
name string
args args
times int
wantErr bool
maxRetry bool
excludePorts bool
}{
{
name: "Should fail - min is less than 1",
args: args{
min: 0,
max: 10,
},
times: 3,
wantErr: true,
maxRetry: false,
excludePorts: false,
},
{
name: "Should fail - min is negative",
args: args{
min: -10,
max: 10,
},
times: 3,
wantErr: true,
maxRetry: false,
excludePorts: false,
},
{
name: "Should fail - max less than 0 and is negative",
args: args{
min: 1,
max: -10,
},
times: 3,
wantErr: true,
maxRetry: false,
excludePorts: false,
},
{
name: "Should fail - max less than min",
args: args{
min: 3,
max: 1,
},
times: 3,
wantErr: true,
maxRetry: false,
excludePorts: false,
},
{
name: "Should work - max is max int capacity",
args: args{
min: 1,
max: 0,
},
times: 3,
wantErr: false,
maxRetry: false,
excludePorts: false,
},
{
name: "Should work - no range",
args: args{
min: 1,
max: 1,
},
times: 3,
wantErr: false,
maxRetry: false,
excludePorts: false,
},
{
name: "Should work - range 3",
args: args{
min: 1,
max: 3,
},
times: 3,
wantErr: false,
maxRetry: false,
excludePorts: false,
},
{
name: "Should work - with memory",
args: args{
min: 1,
max: 3,
},
times: 2,
wantErr: false,
maxRetry: false,
excludePorts: true,
},
{
name: "Should fail - all options saturated in the specified range",
args: args{
min: 1,
max: 3,
},
times: 10,
wantErr: true,
maxRetry: false,
excludePorts: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
r, err := New(tt.args.min, tt.args.max, tt.args.maxRetry, tt.excludePorts)
// Errored, but don't wanted.
if (err != nil) && !tt.wantErr {
t.Errorf("New() error = %v, wantErr %v", err, tt.wantErr)
return
}
// Errored, and wanted. Need to stop or ``.Generate` will be called
// on `nil` causing `panic`.
if (err != nil) && tt.wantErr {
return
}
// Control flag.
failed := false
for i := 0; i < tt.times; i++ {
_, err := r.Generate()
if err != nil {
failed = true
}
}
if failed != tt.wantErr {
t.Errorf("RandomPortGenerator() error = %v, wantErr %v", failed, tt.wantErr)
return
}
})
}
}