73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package letter
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import (
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"reflect"
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"testing"
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)
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// In the separate file frequency.go, you are given a function, Frequency(),
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// to sequentially count letter frequencies in a single text.
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// Perform this exercise on parallelism using Go concurrency features.
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// Make concurrent calls to Frequency and combine results to obtain the answer.
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func TestConcurrentFrequency(t *testing.T) {
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seq := Frequency(euro + dutch + us)
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con := ConcurrentFrequency([]string{euro, dutch, us})
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if !reflect.DeepEqual(con, seq) {
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t.Fatal("ConcurrentFrequency wrong result")
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}
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}
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var (
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euro = `Freude schöner Götterfunken
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Tochter aus Elysium,
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Wir betreten feuertrunken,
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Himmlische, dein Heiligtum!
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Deine Zauber binden wieder
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Was die Mode streng geteilt;
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Alle Menschen werden Brüder,
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Wo dein sanfter Flügel weilt.`
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dutch = `Wilhelmus van Nassouwe
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ben ik, van Duitsen bloed,
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den vaderland getrouwe
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blijf ik tot in den dood.
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Een Prinse van Oranje
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ben ik, vrij, onverveerd,
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den Koning van Hispanje
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heb ik altijd geëerd.`
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us = `O say can you see by the dawn's early light,
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What so proudly we hailed at the twilight's last gleaming,
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Whose broad stripes and bright stars through the perilous fight,
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O'er the ramparts we watched, were so gallantly streaming?
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And the rockets' red glare, the bombs bursting in air,
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Gave proof through the night that our flag was still there;
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O say does that star-spangled banner yet wave,
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O'er the land of the free and the home of the brave?`
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)
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func BenchmarkConcurrentFrequency(b *testing.B) {
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b.StopTimer()
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var bTest []string
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for i := 0; i < 5; i++ {
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bTest = append(bTest, euro)
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bTest = append(bTest, dutch)
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bTest = append(bTest, us)
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}
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b.StartTimer()
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ConcurrentFrequency(bTest)
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b.StopTimer()
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}
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func BenchmarkMyConcurrentFrequency(b *testing.B) {
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b.StopTimer()
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var bTest []string
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for i := 0; i < 5; i++ {
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bTest = append(bTest, euro)
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bTest = append(bTest, dutch)
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bTest = append(bTest, us)
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}
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b.StartTimer()
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MyConcurrentFrequency(bTest)
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b.StopTimer()
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}
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