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seqhelper_test.go
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seqhelper_test.go
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package go2linq
import (
"context"
"errors"
"fmt"
"iter"
"reflect"
"sync/atomic"
"testing"
"github.com/solsw/errorhelper"
)
func TestSliceToSeq_int(t *testing.T) {
type args struct {
s []int
}
tests := []struct {
name string
args args
want iter.Seq[int]
}{
{name: "nil slice",
args: args{s: nil},
want: Empty[int](),
},
{name: "zero slice",
args: args{s: []int{}},
want: Empty[int](),
},
{name: "empty slice",
args: args{s: make([]int, 0)},
want: Empty[int](),
},
{name: "normal slice",
args: args{s: []int{1, 2, 3, 4}},
want: VarToSeq(1, 2, 3, 4),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := SliceToSeq(tt.args.s)
equal, _ := SequenceEqual(got, tt.want)
if !equal {
t.Errorf("SliceToSeq() = %v, want %v", StringDef(got), StringDef(tt.want))
}
})
}
}
func TestVarToSeq_int_1(t *testing.T) {
t.Run("", func(t *testing.T) {
next, stop := iter.Pull(VarToSeq(1))
defer stop()
_, _ = next()
_, got := next()
want := false
if got != want {
t.Errorf("VarToSeq_1() = %v, want %v", got, want)
}
})
}
func TestVarToSeq_int_2(t *testing.T) {
t.Run("", func(t *testing.T) {
next, stop := iter.Pull(VarToSeq(1, 2))
defer stop()
_, _ = next()
got, _ := next()
want := 2
if got != want {
t.Errorf("VarToSeq_2() = %v, want %v", got, want)
}
})
}
func TestStringFmt_int(t *testing.T) {
type args struct {
seq iter.Seq[int]
sep string
lrim string
rrim string
ledge string
redge string
}
tests := []struct {
name string
args args
want string
}{
{name: "1",
args: args{
seq: VarToSeq(1, 2, 3, 4),
sep: "-",
lrim: "<",
rrim: ">",
ledge: "[",
redge: "]",
},
want: "[<1>-<2>-<3>-<4>]",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := StringFmt(tt.args.seq, tt.args.sep, tt.args.lrim, tt.args.rrim, tt.args.ledge, tt.args.redge); got != tt.want {
t.Errorf("StringFmt() = %v, want %v", got, tt.want)
}
})
}
}
type intStringer int
func (i intStringer) String() string {
return fmt.Sprintf("%d+%d", i, i*i)
}
func TestStringDef(t *testing.T) {
type args struct {
seq iter.Seq[intStringer]
}
tests := []struct {
name string
args args
want string
}{
{name: "1",
args: args{
seq: VarToSeq(intStringer(1), intStringer(2), intStringer(3)),
},
want: "[1+1 2+4 3+9]",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := StringDef(tt.args.seq); got != tt.want {
t.Errorf("StringDef() = %v, want %v", got, tt.want)
}
})
}
}
func TestStringDef_any(t *testing.T) {
type args struct {
seq iter.Seq[any]
}
tests := []struct {
name string
args args
want string
}{
{name: "1",
args: args{
seq: VarToSeq(any(intStringer(1)), any(2), any(intStringer(3))),
},
want: "[1+1 2 3+9]",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := StringDef(tt.args.seq); got != tt.want {
t.Errorf("StringDef() = %v, want %v", got, tt.want)
}
})
}
}
func TestForEach_int(t *testing.T) {
var acc1 int
ctx1, cancel := context.WithCancel(context.Background())
type args struct {
ctx context.Context
seq iter.Seq[int]
action func(int) error
}
tests := []struct {
name string
args args
want int
wantErr bool
expectedErr error
}{
{name: "01",
args: args{
ctx: context.Background(),
action: func(i int) error {
acc1 += i * i
return nil
},
},
wantErr: true,
expectedErr: ErrNilSource,
},
{name: "02",
args: args{
ctx: context.Background(),
seq: VarToSeq(1, 2, 3),
},
wantErr: true,
expectedErr: ErrNilAction,
},
{name: "03",
args: args{
ctx: ctx1,
seq: VarToSeq(1, 2, 3),
action: func(i int) error {
if i == 2 {
cancel()
}
return nil
},
},
wantErr: true,
expectedErr: context.Canceled,
},
{name: "04",
args: args{
ctx: context.Background(),
seq: VarToSeq(1, 2, 3),
action: func(i int) error {
if i == 2 {
return errorhelper.CallerError(ErrTestError)
}
acc1 += i * i
return nil
},
},
wantErr: true,
expectedErr: ErrTestError,
},
{name: "1",
args: args{
ctx: context.Background(),
seq: VarToSeq(1, 2, 3),
action: func(i int) error {
acc1 += i * i
return nil
},
},
want: 14,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
acc1 = 0
err := ForEach(tt.args.ctx, tt.args.seq, tt.args.action)
if (err != nil) != tt.wantErr {
t.Errorf("ForEach() error = %v, wantErr %v", err, tt.wantErr)
return
}
if tt.wantErr {
if !errors.Is(err, tt.expectedErr) {
t.Errorf("ForEach() error = %v, expectedErr %v", err, tt.expectedErr)
}
return
}
if !reflect.DeepEqual(acc1, tt.want) {
t.Errorf("ForEach() = %v, want %v", acc1, tt.want)
}
})
}
}
func TestForEachConcurrent_int(t *testing.T) {
var acc1 int64
canceledCtx, cancel := context.WithCancel(context.Background())
cancel()
type args struct {
ctx context.Context
seq iter.Seq[int]
action func(int) error
}
tests := []struct {
name string
args args
want int64
wantErr bool
expectedErr error
}{
{name: "01",
args: args{
ctx: canceledCtx,
seq: VarToSeq(1, 2, 3),
action: func(int) error { return nil },
},
wantErr: true,
expectedErr: context.Canceled,
},
{name: "02",
args: args{
ctx: context.Background(),
seq: VarToSeq(1, 2, 3),
action: func(i int) error {
if i == 2 {
return errorhelper.CallerError(ErrTestError)
}
atomic.AddInt64(&acc1, int64(i*i))
return nil
},
},
wantErr: true,
expectedErr: ErrTestError,
},
{name: "1",
args: args{
ctx: context.Background(),
seq: errorhelper.Must(Range(1, 1000)),
action: func(i int) error {
// acc1 += int64(i * i) // <- demonstrates race error
atomic.AddInt64(&acc1, int64(i*i))
return nil
},
},
want: 333833500,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
acc1 = 0
err := ForEachConcurrent(tt.args.ctx, tt.args.seq, tt.args.action)
if (err != nil) != tt.wantErr {
t.Errorf("ForEachConcurrent() error = %v, wantErr %v", err, tt.wantErr)
return
}
if tt.wantErr {
if !errors.Is(err, tt.expectedErr) {
t.Errorf("ForEachConcurrent() error = %v, expectedErr %v", err, tt.expectedErr)
}
return
}
if !reflect.DeepEqual(acc1, tt.want) {
t.Errorf("ForEachConcurrent() = %v, want %v", acc1, tt.want)
}
})
}
}
func TestSeqString_int(t *testing.T) {
type args struct {
seq iter.Seq[int]
}
tests := []struct {
name string
args args
want iter.Seq[string]
}{
{name: "1",
args: args{
seq: VarToSeq(1, 2, 3),
},
want: VarToSeq("1", "2", "3"),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, _ := SeqString(tt.args.seq)
equal, _ := SequenceEqual(got, tt.want)
if !equal {
t.Errorf("SeqString() = %v, want %v", StringDef(got), StringDef(tt.want))
}
})
}
}
func TestSeqString_any(t *testing.T) {
type args struct {
seq iter.Seq[any]
}
tests := []struct {
name string
args args
want iter.Seq[string]
}{
{name: "1",
args: args{
seq: VarToSeq(any(1), any(intStringer(2)), any(3)),
},
want: VarToSeq("1", "2+4", "3"),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, _ := SeqString(tt.args.seq)
equal, _ := SequenceEqual(got, tt.want)
if !equal {
t.Errorf("SeqString() = %v, want %v", StringDef(got), StringDef(tt.want))
}
})
}
}
func TestStrings_int(t *testing.T) {
type args struct {
seq iter.Seq[int]
}
tests := []struct {
name string
args args
want []string
}{
{name: "1",
args: args{
seq: VarToSeq(1, 2, 3),
},
want: []string{"1", "2", "3"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, _ := Strings(tt.args.seq)
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("Strings() = %v, want %v", got, tt.want)
}
})
}
}
func TestStrings_intStringer(t *testing.T) {
type args struct {
seq iter.Seq[intStringer]
}
tests := []struct {
name string
args args
want []string
}{
{name: "1",
args: args{
seq: VarToSeq(intStringer(1), 2, 3),
},
want: []string{"1+1", "2+4", "3+9"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, _ := Strings(tt.args.seq)
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("Strings() = %v, want %v", got, tt.want)
}
})
}
}