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79 lines
1.5 KiB
Go
79 lines
1.5 KiB
Go
package serverinterceptors
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/zeromicro/go-zero/core/load"
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"github.com/zeromicro/go-zero/core/stat"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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)
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func TestUnarySheddingInterceptor(t *testing.T) {
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tests := []struct {
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name string
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allow bool
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handleErr error
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expect error
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}{
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{
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name: "allow",
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allow: true,
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handleErr: nil,
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expect: nil,
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},
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{
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name: "allow",
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allow: true,
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handleErr: context.DeadlineExceeded,
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expect: context.DeadlineExceeded,
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},
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{
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name: "reject",
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allow: false,
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handleErr: nil,
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expect: status.Error(codes.ResourceExhausted, load.ErrServiceOverloaded.Error()),
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},
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}
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for _, test := range tests {
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test := test
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t.Run(test.name, func(t *testing.T) {
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t.Parallel()
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shedder := mockedShedder{allow: test.allow}
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metrics := stat.NewMetrics("mock")
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interceptor := UnarySheddingInterceptor(shedder, metrics)
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_, err := interceptor(context.Background(), nil, &grpc.UnaryServerInfo{
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FullMethod: "/",
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}, func(ctx context.Context, req any) (any, error) {
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return nil, test.handleErr
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})
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assert.Equal(t, test.expect, err)
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})
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}
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}
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type mockedShedder struct {
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allow bool
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}
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func (m mockedShedder) Allow() (load.Promise, error) {
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if m.allow {
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return mockedPromise{}, nil
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}
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return nil, load.ErrServiceOverloaded
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}
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type mockedPromise struct{}
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func (m mockedPromise) Pass() {
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}
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func (m mockedPromise) Fail() {
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}
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