exercism/go/transpose/transpose_test.go

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2017-08-12 14:01:07 +00:00
package transpose
import (
"reflect"
"testing"
)
const targetTestVersion = 1
func TestTestVersion(t *testing.T) {
if testVersion != targetTestVersion {
t.Fatalf("Found testVersion = %v, want %v", testVersion, targetTestVersion)
}
}
func TestTranspose(t *testing.T) {
for _, test := range testCases {
actual := Transpose(test.input)
if !reflect.DeepEqual(actual, test.expected) {
// check for zero length slices
if len(actual) == 0 || len(test.expected) == 0 {
t.Fatalf("\n\tTranspose(%q): %s\n\n\tExpected: %q\n\tGot: %q",
test.input, test.description, test.expected, actual)
}
// let's make the error more specific and find the row it's on
min := min(len(test.expected), len(actual))
for i := 0; i < min; i++ {
if test.expected[i] != actual[i] {
t.Fatalf("\n\tTranspose(%q): %s\n\n\tExpected: %q\n\tGot: %q\n\n\tRow %d Expected: %q Got: %q",
test.input, test.description, test.expected, actual, i, test.expected[i], actual[i])
}
}
}
}
}
// helper function
// https://stackoverflow.com/questions/27516387/what-is-the-correct-way-to-find-the-min-between-two-integers-in-go
func min(a, b int) int {
if a < b {
return a
}
return b
}
func BenchmarkTranspose(b *testing.B) {
for _, test := range testCases {
for i := 0; i < b.N; i++ {
Transpose(test.input)
}
}
}