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101 lines
2.3 KiB
Go
101 lines
2.3 KiB
Go
package humanize
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import (
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"math"
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"testing"
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)
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func TestSI(t *testing.T) {
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tests := []struct {
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name string
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num float64
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formatted string
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}{
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{"e-24", 1e-24, "1 yF"},
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{"e-21", 1e-21, "1 zF"},
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{"e-18", 1e-18, "1 aF"},
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{"e-15", 1e-15, "1 fF"},
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{"e-12", 1e-12, "1 pF"},
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{"e-12", 2.2345e-12, "2.2345 pF"},
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{"e-12", 2.23e-12, "2.23 pF"},
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{"e-11", 2.23e-11, "22.3 pF"},
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{"e-10", 2.2e-10, "220 pF"},
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{"e-9", 2.2e-9, "2.2 nF"},
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{"e-8", 2.2e-8, "22 nF"},
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{"e-7", 2.2e-7, "220 nF"},
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{"e-6", 2.2e-6, "2.2 µF"},
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{"e-6", 1e-6, "1 µF"},
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{"e-5", 2.2e-5, "22 µF"},
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{"e-4", 2.2e-4, "220 µF"},
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{"e-3", 2.2e-3, "2.2 mF"},
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{"e-2", 2.2e-2, "22 mF"},
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{"e-1", 2.2e-1, "220 mF"},
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{"e+0", 2.2e-0, "2.2 F"},
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{"e+0", 2.2, "2.2 F"},
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{"e+1", 2.2e+1, "22 F"},
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{"0", 0, "0 F"},
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{"e+1", 22, "22 F"},
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{"e+2", 2.2e+2, "220 F"},
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{"e+2", 220, "220 F"},
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{"e+3", 2.2e+3, "2.2 kF"},
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{"e+3", 2200, "2.2 kF"},
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{"e+4", 2.2e+4, "22 kF"},
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{"e+4", 22000, "22 kF"},
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{"e+5", 2.2e+5, "220 kF"},
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{"e+6", 2.2e+6, "2.2 MF"},
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{"e+6", 1e+6, "1 MF"},
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{"e+7", 2.2e+7, "22 MF"},
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{"e+8", 2.2e+8, "220 MF"},
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{"e+9", 2.2e+9, "2.2 GF"},
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{"e+10", 2.2e+10, "22 GF"},
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{"e+11", 2.2e+11, "220 GF"},
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{"e+12", 2.2e+12, "2.2 TF"},
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{"e+15", 2.2e+15, "2.2 PF"},
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{"e+18", 2.2e+18, "2.2 EF"},
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{"e+21", 2.2e+21, "2.2 ZF"},
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{"e+24", 2.2e+24, "2.2 YF"},
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// special case
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{"1F", 1000 * 1000, "1 MF"},
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{"1F", 1e6, "1 MF"},
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// negative number
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{"-100 F", -100, "-100 F"},
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}
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for _, test := range tests {
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got := SI(test.num, "F")
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if got != test.formatted {
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t.Errorf("On %v (%v), got %v, wanted %v",
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test.name, test.num, got, test.formatted)
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}
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gotf, gotu, err := ParseSI(test.formatted)
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if err != nil {
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t.Errorf("Error parsing %v (%v): %v", test.name, test.formatted, err)
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continue
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}
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if math.Abs(1-(gotf/test.num)) > 0.01 {
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t.Errorf("On %v (%v), got %v, wanted %v (±%v)",
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test.name, test.formatted, gotf, test.num,
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math.Abs(1-(gotf/test.num)))
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}
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if gotu != "F" {
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t.Errorf("On %v (%v), expected unit F, got %v",
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test.name, test.formatted, gotu)
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}
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}
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// Parse error
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gotf, gotu, err := ParseSI("x1.21JW") // 1.21 jigga whats
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if err == nil {
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t.Errorf("Expected error on x1.21JW, got %v %v", gotf, gotu)
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}
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}
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func BenchmarkParseSI(b *testing.B) {
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for i := 0; i < b.N; i++ {
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ParseSI("2.2346ZB")
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}
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}
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