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authorDimitri Sokolyuk <demon@dim13.org>2016-08-26 14:44:10 +0200
committerDimitri Sokolyuk <demon@dim13.org>2016-08-26 14:44:10 +0200
commitacbc22c498a5e58b810f6a3838fa85e597b7f4d9 (patch)
tree1e543f56ad4e63a0df55a5ea269b41720bb0f287 /go/sum-of-multiples/sum_of_multiples_test.go
parentf47002f53090869eb8a0d725b7770959a3af30db (diff)
Solve sum of multiples
Diffstat (limited to 'go/sum-of-multiples/sum_of_multiples_test.go')
-rw-r--r--go/sum-of-multiples/sum_of_multiples_test.go73
1 files changed, 73 insertions, 0 deletions
diff --git a/go/sum-of-multiples/sum_of_multiples_test.go b/go/sum-of-multiples/sum_of_multiples_test.go
new file mode 100644
index 0000000..9ab0bb2
--- /dev/null
+++ b/go/sum-of-multiples/sum_of_multiples_test.go
@@ -0,0 +1,73 @@
+package summultiples
+
+import "testing"
+
+var test35 = []struct {
+ limit int
+ sum int
+}{
+ {1, 0},
+ {4, 3},
+ {10, 23},
+ {100, 2318},
+ {1000, 233168},
+}
+
+var varTests = []struct {
+ divisors []int
+ limit int
+ sum int
+}{
+ {[]int{7, 13, 17}, 20, 51},
+ {[]int{43, 47}, 10000, 2203160},
+ {[]int{5, 10, 12}, 10000, 13331672},
+ {[]int{1, 1}, 10000, 49995000},
+ // Note: The following test case deviates from the README.
+ // The README specifies some rather odd defaults, whereas
+ // this has the more logical approach of not implementing any
+ // defaults, which causes the resulting sum to be zero.
+ // See discussion in:
+ // https://github.com/exercism/xgo/issues/256 and
+ // https://github.com/exercism/x-common/issues/198
+ {[]int{}, 10000, 0},
+}
+
+func Test35(t *testing.T) {
+ sum35 := MultipleSummer(3, 5)
+ for _, test := range test35 {
+ s := sum35(test.limit)
+ if s != test.sum {
+ t.Fatalf("Sum to %d returned %d, want %d.", test.limit, s, test.sum)
+ }
+ }
+}
+
+func TestVar(t *testing.T) {
+ for _, test := range varTests {
+ sv := MultipleSummer(test.divisors...)
+ s := sv(test.limit)
+ if s != test.sum {
+ t.Fatalf("Sum of multiples of %v to %d returned %d, want %d.",
+ test.divisors, test.limit, s, test.sum)
+ }
+ }
+}
+
+func Benchmark35(b *testing.B) {
+ sum35 := MultipleSummer(3, 5)
+ b.ResetTimer() // bench just the sum function
+ for i := 0; i < b.N; i++ {
+ for _, test := range test35 {
+ sum35(test.limit)
+ }
+ }
+}
+
+func BenchmarkVar(b *testing.B) {
+ // bench combined time to bind sum function and call it.
+ for i := 0; i < b.N; i++ {
+ for _, test := range varTests {
+ MultipleSummer(test.divisors...)(test.limit)
+ }
+ }
+}