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go-micro/wrapper_test.go

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package micro
import (
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"context"
"testing"
"github.com/micro/go-micro/metadata"
)
func TestWrapper(t *testing.T) {
testData := []struct {
existing metadata.Metadata
headers metadata.Metadata
overwrite bool
}{
{
existing: metadata.Metadata{},
headers: metadata.Metadata{
"foo": "bar",
},
overwrite: true,
},
{
existing: metadata.Metadata{
"foo": "bar",
},
headers: metadata.Metadata{
"foo": "baz",
},
overwrite: false,
},
}
for _, d := range testData {
c := &clientWrapper{
headers: d.headers,
}
ctx := metadata.NewContext(context.Background(), d.existing)
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ctx = c.setHeaders(ctx)
md, _ := metadata.FromContext(ctx)
for k, v := range d.headers {
if d.overwrite && md[k] != v {
t.Fatalf("Expected %s=%s got %s=%s", k, v, k, md[k])
}
if !d.overwrite && md[k] != d.existing[k] {
t.Fatalf("Expected %s=%s got %s=%s", k, d.existing[k], k, md[k])
}
}
}
}