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test_sieve.go
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test_sieve.go
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package test
import (
"fmt"
"reflect"
"testing"
)
func matchString(a, b string) (bool, error) {
return a == b, nil
}
// Sieve is a function to test a sieve of Eratosthenes function
func Sieve(SieveOfEratosthenes func(n int) []int) {
testSieve := func(t *testing.T) {
tests := []struct {
n int
want []int
}{
{
n: 10,
want: []int{2, 3, 5, 7},
},
{
n: 20,
want: []int{2, 3, 5, 7, 11, 13, 17, 19},
},
{
n: 100,
want: []int{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97},
},
{
n: 200,
want: []int{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199},
},
{
n: 300,
want: []int{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293},
},
{
n: 400,
want: []int{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397},
},
{
n: 500,
want: []int{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499},
},
}
for _, tt := range tests {
name := fmt.Sprintf("Prime numbers until %d", tt.n)
t.Run(name, func(t *testing.T) {
t.Log()
got := SieveOfEratosthenes(tt.n)
if !reflect.DeepEqual(tt.want, got) {
t.Errorf("Expected: %v, got: %v", tt.want, got)
}
})
}
}
testSuite := []testing.InternalTest{
{
Name: "TestSieve",
F: testSieve,
},
}
testing.Main(matchString, testSuite, nil, nil)
}