exercism/go/largest-series-product/largest_series_product_test.go

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2016-08-13 23:20:14 +00:00
package lsproduct
import "testing"
const testVersion = 1
// Retired testVersions
// (none) ba7a22a355a32901caf46529c799fa53118ded0a
var tests = []struct {
digits string
span int
product int64
ok bool
}{
{"0123456789",
2, 72, true},
{"12",
2, 2, true},
{"19",
2, 9, true},
{"576802143",
2, 48, true},
{"0123456789",
3, 504, true},
{"1027839564",
3, 270, true},
{"0123456789",
5, 15120, true},
{"73167176531330624919225119674426574742355349194934",
6, 23520, true},
{"52677741234314237566414902593461595376319419139427",
6, 28350, true},
{"",
0, 1, true},
{"123",
4, 0, false},
{pe1k, 5, 40824, true}, // original PE problem
{pe1k, 13, 23514624000, true}, // new PE problem
}
const pe1k = "73167176531330624919225119674426574742355349194934" +
"96983520312774506326239578318016984801869478851843" +
"85861560789112949495459501737958331952853208805511" +
"12540698747158523863050715693290963295227443043557" +
"66896648950445244523161731856403098711121722383113" +
"62229893423380308135336276614282806444486645238749" +
"30358907296290491560440772390713810515859307960866" +
"70172427121883998797908792274921901699720888093776" +
"65727333001053367881220235421809751254540594752243" +
"52584907711670556013604839586446706324415722155397" +
"53697817977846174064955149290862569321978468622482" +
"83972241375657056057490261407972968652414535100474" +
"82166370484403199890008895243450658541227588666881" +
"16427171479924442928230863465674813919123162824586" +
"17866458359124566529476545682848912883142607690042" +
"24219022671055626321111109370544217506941658960408" +
"07198403850962455444362981230987879927244284909188" +
"84580156166097919133875499200524063689912560717606" +
"05886116467109405077541002256983155200055935729725" +
"71636269561882670428252483600823257530420752963450"
func TestLargestSeriesProduct(t *testing.T) {
if TestVersion != testVersion {
t.Fatalf("Found TestVersion = %v, want %v", TestVersion, testVersion)
}
for _, test := range tests {
p, err := LargestSeriesProduct(test.digits, test.span)
switch {
case err != nil:
if test.ok {
t.Fatalf("LargestSeriesProduct(%s, %d) returned error %q. "+
"Error not expected.",
test.digits, test.span, err)
}
case !test.ok:
t.Fatalf("LargestSeriesProduct(%s, %d) = %d, %v. Expected error",
test.digits, test.span, p, err)
case int64(p) != test.product:
t.Fatalf("LargestSeriesProduct(%s, %d) = %d, want %d",
test.digits, test.span, p, test.product)
}
}
}
func BenchmarkLargestSeriesProduct(b *testing.B) {
for i := 0; i < b.N; i++ {
for _, test := range tests {
LargestSeriesProduct(test.digits, test.span)
}
}
}