exercism/go/binary/binary_test.go

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2016-08-13 23:20:14 +00:00
package binary
import (
"testing"
)
// You must implement the function,
//
// func ParseBinary(string) (int, error)
//
// It is standard for Go functions to return error values to report error conditions.
// The test cases below are all valid binary numbers however. For this exercise you
// may simply return nil for the error value in all cases.
//
// For bonus points though, what errors might be possible when parsing a number?
// Can you add code to detect error conditions and return appropriate error values?
var testCases = []struct {
binary string
expected int
}{
{"1", 1},
{"10", 2},
{"11", 3},
{"100", 4},
{"1001", 9},
{"11010", 26},
{"10001101000", 1128},
{"0", 0},
}
func TestParseBinary(t *testing.T) {
for _, tt := range testCases {
actual, err := ParseBinary(tt.binary)
// We don't expect errors for any of the test cases.
if err != nil {
t.Fatalf("ParseBinary(%v) returned error %q. Error not expected.",
tt.binary, err)
}
// Well, we don't expect wrong answers either.
if actual != tt.expected {
t.Fatalf("ParseBinary(%v): actual %d, expected %v",
tt.binary, actual, tt.expected)
}
}
}
// Benchmark combined time for all tests
func BenchmarkBinary(b *testing.B) {
for i := 0; i < b.N; i++ {
for _, tt := range testCases {
ParseBinary(tt.binary)
}
}
}