Feat: add structure helper

common/structure/structure_test.go

@@ -0,0 +1,141 @@
+package structure
+
+import (
+	"reflect"
+	"testing"
+)
+
+var decoder = NewDecoder(Option{TagName: "test"})
+var weakTypeDecoder = NewDecoder(Option{TagName: "test", WeaklyTypedInput: true})
+
+type Baz struct {
+	Foo int    `test:"foo"`
+	Bar string `test:"bar"`
+}
+
+type BazSlice struct {
+	Foo int      `test:"foo"`
+	Bar []string `test:"bar"`
+}
+
+type BazOptional struct {
+	Foo int    `test:"foo,omitempty"`
+	Bar string `test:"bar,omitempty"`
+}
+
+func TestStructure_Basic(t *testing.T) {
+	rawMap := map[string]interface{}{
+		"foo":   1,
+		"bar":   "test",
+		"extra": false,
+	}
+
+	goal := &Baz{
+		Foo: 1,
+		Bar: "test",
+	}
+
+	s := &Baz{}
+	err := decoder.Decode(rawMap, s)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+	if !reflect.DeepEqual(s, goal) {
+		t.Fatalf("bad: %#v", s)
+	}
+}
+
+func TestStructure_Slice(t *testing.T) {
+	rawMap := map[string]interface{}{
+		"foo": 1,
+		"bar": []string{"one", "two"},
+	}
+
+	goal := &BazSlice{
+		Foo: 1,
+		Bar: []string{"one", "two"},
+	}
+
+	s := &BazSlice{}
+	err := decoder.Decode(rawMap, s)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+	if !reflect.DeepEqual(s, goal) {
+		t.Fatalf("bad: %#v", s)
+	}
+}
+
+func TestStructure_Optional(t *testing.T) {
+	rawMap := map[string]interface{}{
+		"foo": 1,
+	}
+
+	goal := &BazOptional{
+		Foo: 1,
+	}
+
+	s := &BazOptional{}
+	err := decoder.Decode(rawMap, s)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+	if !reflect.DeepEqual(s, goal) {
+		t.Fatalf("bad: %#v", s)
+	}
+}
+
+func TestStructure_MissingKey(t *testing.T) {
+	rawMap := map[string]interface{}{
+		"foo": 1,
+	}
+
+	s := &Baz{}
+	err := decoder.Decode(rawMap, s)
+	if err == nil {
+		t.Fatalf("should throw error: %#v", s)
+	}
+}
+
+func TestStructure_ParamError(t *testing.T) {
+	rawMap := map[string]interface{}{}
+	s := Baz{}
+	err := decoder.Decode(rawMap, s)
+	if err == nil {
+		t.Fatalf("should throw error: %#v", s)
+	}
+}
+
+func TestStructure_SliceTypeError(t *testing.T) {
+	rawMap := map[string]interface{}{
+		"foo": 1,
+		"bar": []int{1, 2},
+	}
+
+	s := &BazSlice{}
+	err := decoder.Decode(rawMap, s)
+	if err == nil {
+		t.Fatalf("should throw error: %#v", s)
+	}
+}
+
+func TestStructure_WeakType(t *testing.T) {
+	rawMap := map[string]interface{}{
+		"foo": "1",
+		"bar": []int{1},
+	}
+
+	goal := &BazSlice{
+		Foo: 1,
+		Bar: []string{"1"},
+	}
+
+	s := &BazSlice{}
+	err := weakTypeDecoder.Decode(rawMap, s)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+	if !reflect.DeepEqual(s, goal) {
+		t.Fatalf("bad: %#v", s)
+	}
+}