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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| package bootstrap | ||
|
|
||
| import ( | ||
| "context" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
|
|
||
| func TestRetryInterceptor(t *testing.T) { | ||
| expecterErr := status.Error(codes.ResourceExhausted, "resource exhausted") | ||
| interceptor := retryInterceptor(100*time.Millisecond, 10*time.Millisecond) | ||
|
|
||
| testCases := []struct { | ||
| name string | ||
| invoker func(callCount int) error | ||
| maxRequestTime time.Duration | ||
| callCount int // expect exact count | ||
| minCallCount int // min, for when using a timeout | ||
| expectedErr error | ||
| }{ | ||
| { | ||
| name: "no error", | ||
| invoker: func(callCount int) error { | ||
| return nil | ||
| }, | ||
| maxRequestTime: 10 * time.Millisecond, | ||
| callCount: 1, | ||
| expectedErr: nil, | ||
| }, | ||
| { | ||
| name: "succeeds on 3rd attempt", | ||
| invoker: func(callCount int) error { | ||
| if callCount >= 3 { | ||
| return nil | ||
| } | ||
| return expecterErr | ||
| }, | ||
| maxRequestTime: 40 * time.Millisecond, | ||
| callCount: 3, | ||
| expectedErr: nil, | ||
| }, | ||
| { | ||
| name: "fails after timeout", | ||
| invoker: func(callCount int) error { | ||
| return expecterErr | ||
| }, | ||
| maxRequestTime: 150 * time.Millisecond, // add a buffer for test slowness | ||
| minCallCount: 10, | ||
| expectedErr: expecterErr, | ||
| }, | ||
| } | ||
|
|
||
| for _, tc := range testCases { | ||
| t.Run(tc.name, func(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| callCount := 0 | ||
| invoker := func(context.Context, string, any, any, *grpc.ClientConn, ...grpc.CallOption) error { | ||
| callCount++ | ||
| return tc.invoker(callCount) | ||
| } | ||
|
|
||
| start := time.Now() | ||
| err := interceptor( | ||
| context.Background(), "", nil, nil, nil, | ||
| invoker, | ||
| ) | ||
| if tc.expectedErr != nil { | ||
| assert.ErrorIs(t, err, tc.expectedErr) | ||
| } else { | ||
| assert.NoError(t, err) | ||
| } | ||
|
|
||
| if tc.minCallCount > 0 { | ||
| assert.GreaterOrEqual(t, callCount, tc.minCallCount) | ||
| } else { | ||
| assert.Equal(t, callCount, tc.callCount) | ||
| } | ||
| assert.LessOrEqual(t, time.Since(start), tc.maxRequestTime) | ||
| }) | ||
| } | ||
| } |
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