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Testing Map Equivalence in Go
In table-driven tests, the challenge of testing map equality arises. Manually checking lengths and key-value pairs becomes tedious, especially when repeated for different map types.
Idiomatic Solution
The idiomatic solution utilizes the Go standard library's reflect package. The reflect.DeepEqual function takes in two interface{} arguments and checks for equality by:
Example
import "reflect" func TestMapEquality(t *testing.T) { m1 := map[string]int{"foo": 1, "bar": 2} m2 := map[string]int{"foo": 1, "bar": 2} eq := reflect.DeepEqual(m1, m2) if !eq { t.Errorf("Maps not equal: %v", m1, m2) } }
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