go: Unit test example

go/unit_test_example/main.go

@@ -0,0 +1,11 @@
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("vim-go")
+}
+
+func sum(x, y int) int {
+	return x + y + 1
+}

go/unit_test_example/main_test.go

@@ -0,0 +1,14 @@
+package main
+
+import "testing"
+
+/* Must be camelcase and start with "Test"
+   so Testsum will not work. sumTest will not work
+*/
+func TestSum(t *testing.T) {
+	total := sum(1, 7)
+
+	if total != 8 {
+		t.Errorf("Sum was incorrect, got: %d, want: %d.", total, 8)
+	}
+}