restructured the project to comply community guideline, for others check release note

internal/error/builder_test.go

@@ -0,0 +1,53 @@
+package error
+
+import (
+	"testing"
+
+	. "github.com/yusing/go-proxy/internal/utils/testing"
+)
+
+func TestBuilderEmpty(t *testing.T) {
+	eb := NewBuilder("qwer")
+	ExpectTrue(t, eb.Build() == nil)
+	ExpectTrue(t, eb.Build().NoError())
+	ExpectFalse(t, eb.HasError())
+}
+
+func TestBuilderAddNil(t *testing.T) {
+	eb := NewBuilder("asdf")
+	var err NestedError
+	for range 3 {
+		eb.Add(nil)
+	}
+	for range 3 {
+		eb.Add(err)
+	}
+	ExpectTrue(t, eb.Build() == nil)
+	ExpectTrue(t, eb.Build().NoError())
+	ExpectFalse(t, eb.HasError())
+}
+
+func TestBuilderNested(t *testing.T) {
+	eb := NewBuilder("error occurred")
+	eb.Add(Failure("Action 1").With(Invalid("Inner", "1")).With(Invalid("Inner", "2")))
+	eb.Add(Failure("Action 2").With(Invalid("Inner", "3")))
+
+	got := eb.Build().String()
+	expected1 :=
+		(`error occurred:
+  - Action 1 failed:
+    - invalid Inner: 1
+    - invalid Inner: 2
+  - Action 2 failed:
+    - invalid Inner: 3`)
+	expected2 :=
+		(`error occurred:
+  - Action 1 failed:
+    - invalid Inner: "1"
+    - invalid Inner: "2"
+  - Action 2 failed:
+    - invalid Inner: "3"`)
+	if got != expected1 && got != expected2 {
+		t.Errorf("expected \n%s, got \n%s", expected1, got)
+	}
+}