feat(Go-StudyExample):2021/02/09:新增merge源码阅读和单测代码

SourceAnalysisAndTool/mergo@v0.3.11/issue61_test.go

@@ -0,0 +1,24 @@
+package mergo_test
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/imdario/mergo"
+)
+
+func TestIssue61MergeNilMap(t *testing.T) {
+	type T struct {
+		I map[string][]string
+	}
+	t1 := T{}
+	t2 := T{I: map[string][]string{"hi": {"there"}}}
+
+	if err := mergo.Merge(&t1, t2); err != nil {
+		t.Fail()
+	}
+
+	if !reflect.DeepEqual(t2, T{I: map[string][]string{"hi": {"there"}}}) {
+		t.FailNow()
+	}
+}