clawbot
500768ad32
HumanBytes turns a byte count into a short string using powers of 1024, with whole bytes below the first threshold and one decimal place above it. Comes with a doc comment and table-driven tests. (closes #11) Model: opus-5
34 lines
847 B
Go
34 lines
847 B
Go
package util
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import "testing"
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func TestHumanBytes(t *testing.T) {
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tests := []struct {
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name string
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input uint64
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expected string
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}{
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{"zero", 0, "0 B"},
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{"one byte", 1, "1 B"},
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{"just below a kibibyte", 1023, "1023 B"},
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{"exactly a kibibyte", 1024, "1.0 KiB"},
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{"half a kibibyte more", 1536, "1.5 KiB"},
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{"rounds up into the next unit", 1048575, "1.0 MiB"},
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{"exactly a mebibyte", 1 << 20, "1.0 MiB"},
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{"a gibibyte", 1 << 30, "1.0 GiB"},
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{"a tebibyte", 1 << 40, "1.0 TiB"},
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{"a pebibyte", 1 << 50, "1.0 PiB"},
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{"an exbibyte", 1 << 60, "1.0 EiB"},
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{"the largest count there is", ^uint64(0), "16.0 EiB"},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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got := HumanBytes(test.input)
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if got != test.expected {
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t.Errorf("expected %q got %q", test.expected, got)
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}
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})
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}
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}
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