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42 lines
850 B
Go

3 years ago
package merge
import (
"testing"
)
func TestMergeTables(t *testing.T) {
alice := Table[string, *additive]{
"vanilla": add(3),
"chocolate": add(5),
"strawberry": add(2),
}
bob := Table[string, *additive]{
"vanilla": add(2),
"chocolate": add(3),
"pistacchio": add(5),
}
votes := make(Table[string, *additive])
if err := votes.Merge(alice); err != nil {
t.Fatalf("tables failed to merge: %v", err)
}
if err := votes.Merge(bob); err != nil {
t.Fatalf("tables failed to merge: %v", err)
}
check := func(k string, n int) {
if have := votes[k].total; have != n {
t.Fatalf("expected %d votes for %s but saw %v instead", n, k, have)
}
}
check("vanilla", 5)
check("chocolate", 8)
check("strawberry", 2)
check("pistacchio", 5)
bob["pistacchio"].Merge(add(100))
bob["pistacchio"] = add(1)
check("pistacchio", 5)
3 years ago
}