Files
vaultik/internal/s3/client_internal_test.go
T
clawbot 8b22ae8d42
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Pass s3.part_size to the multipart uploader (closes #232)
s3.part_size was loaded and defaulted but never reached the S3 client,
whose uploader used a fixed 10MiB part. The client now takes the part
size from the config, for storage_url and for the s3.* fields, and
config load rejects a value below 5MiB or above 5GiB, an explicit 0
included. A blob too large for S3's limit of 10,000 parts at that size
is uploaded in larger parts, since the uploader cannot learn the size of
the reader it is given. The docs gave the default as 5MB, which the
config file reads as 5,000,000 bytes, below the minimum; they now say
5MiB.

Judgement call: the 5GiB maximum is enforced along with the 5MiB
minimum the issue names.

Model: opus-5-5
2026-10-07 14:29:10 +02:00

56 lines
1.2 KiB
Go

package s3
import "testing"
// TestUploadPartSize checks that an upload too large for 10,000 parts of the
// configured size gets parts just large enough to fit in 10,000.
func TestUploadPartSize(t *testing.T) {
t.Parallel()
const mib = 1024 * 1024
tests := []struct {
name string
configured int64
size int64
want int64
}{
{
name: "an upload that fits keeps the configured size",
configured: 5 * mib,
size: 10 * 1024 * mib,
want: 5 * mib,
},
{
name: "exactly 10,000 parts keeps the configured size",
configured: 6 * mib,
size: 10_000 * 6 * mib,
want: 6 * mib,
},
{
name: "one byte more than 10,000 parts adds a byte to each",
configured: 6 * mib,
size: 10_000*6*mib + 1,
want: 6*mib + 1,
},
{
name: "zero means the SDK default of 5MiB",
configured: 0,
size: 1,
want: 5 * mib,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
got := uploadPartSize(tt.configured, tt.size)
if got != tt.want {
t.Errorf("uploadPartSize(%d, %d) = %d, want %d",
tt.configured, tt.size, got, tt.want)
}
})
}
}