Add 'x/' from commit 'a10a11b9d371f36b7c3510da32a1d70b74e27bd1'

git-subtree-dir: x
git-subtree-mainline: 7d05a6ee8f
git-subtree-split: a10a11b9d3

x/utils/upload/upload_test.go

@@ -0,0 +1,37 @@
+package upload
+
+import (
+	"testing"
+
+	"kr.dev/diff"
+)
+
+func TestChunks(t *testing.T) {
+	const size = 101
+	const chunkSize = 10
+	var got []Chunk[int]
+	var lastN int
+	for n, c := range Chunks(size, chunkSize) {
+		if n != lastN+1 {
+			t.Errorf("n = %d; want %d", n, lastN+1)
+		}
+		got = append(got, c)
+		lastN = n
+	}
+
+	want := []Chunk[int]{
+		{0, 10},
+		{10, 10},
+		{20, 10},
+		{30, 10},
+		{40, 10},
+		{50, 10},
+		{60, 10},
+		{70, 10},
+		{80, 10},
+		{90, 10},
+		{100, 1},
+	}
+
+	diff.Test(t, t.Errorf, got, want)
+}