Add Cmp

assert.go

@@ -3,6 +3,8 @@ package assert
 import (
 	"reflect"
 	"runtime"
+
+	"github.com/google/go-cmp/cmp"
 )
 
 // Assert is a helper for tests
@@ -167,3 +169,12 @@ func (a Assert) SameElements(expected, actual interface{}, msg ...interface{}) {
 
 	a(false, msg...)
 }
+
+func (a Assert) Cmp(expected, actual interface{}, opts ...cmp.Option) {
+	diff := cmp.Diff(expected, actual, opts...)
+	if diff == `` {
+		return
+	}
+
+	a(false, "\n"+diff)
+}

go.mod

@@ -0,0 +1,5 @@
+module git.fuyu.moe/Fuyu/assert
+
+go 1.14
+
+require github.com/google/go-cmp v0.4.0

go.sum

@@ -0,0 +1,3 @@
+github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=