add more tests

Author: ovechkin-dm

proxy/proxy_test.go

@@ -0,0 +1,121 @@
+package tests
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+
+	"github.com/ovechkin-dm/go-dyno/pkg/dyno"
+)
+
+type Foo interface {
+	Bar() string
+	Baz() int
+	Arr(arr [30]int, i int) int
+	privateMethod() int
+	MultiArg(i int, j int, a [2]int, f [2]float64) int
+}
+
+func TestToString(t *testing.T) {
+	proxy, err := dyno.Dynamic[Foo](func(m reflect.Method, values []reflect.Value) []reflect.Value {
+		return []reflect.Value{reflect.ValueOf("Hello")}
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	s := fmt.Sprintf("%v", proxy)
+	if s != "DynamicProxy" {
+		t.Fatalf("Expected 'DynamicProxy', got '%s'", s)
+	}
+}
+
+func TestSingleMethod(t *testing.T) {
+	proxy, err := dyno.Dynamic[Foo](func(m reflect.Method, values []reflect.Value) []reflect.Value {
+		return []reflect.Value{reflect.ValueOf("Hello")}
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	s := proxy.Bar()
+	if s != "Hello" {
+		t.Fatalf("Expected 'Hello', got '%s'", s)
+	}
+}
+
+func TestMultipleMethods(t *testing.T) {
+	proxy, err := dyno.Dynamic[Foo](func(m reflect.Method, values []reflect.Value) []reflect.Value {
+		switch m.Name {
+		case "Bar":
+			return []reflect.Value{reflect.ValueOf("Hello")}
+		default:
+			return []reflect.Value{reflect.ValueOf(42)}
+		}
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	s := proxy.Bar()
+	if s != "Hello" {
+		t.Fatalf("Expected 'Hello', got '%s'", s)
+	}
+	i := proxy.Baz()
+	if i != 42 {
+		t.Fatalf("Expected 42, got %d", i)
+	}
+}
+
+func TestStackAlignment(t *testing.T) {
+	var arr [30]int
+	for i := 0; i < 30; i++ {
+		arr[i] = i
+	}
+	proxy, err := dyno.Dynamic[Foo](func(m reflect.Method, values []reflect.Value) []reflect.Value {
+		sum := 0
+		for i := 0; i < len(values[0].Interface().([30]int)); i++ {
+			sum += values[0].Interface().([30]int)[i]
+		}
+		return []reflect.Value{reflect.ValueOf(sum + int(values[1].Int()))}
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	result := proxy.Arr(arr, 12)
+	if result != 447 {
+		t.Fatalf("Expected 447, got %d", result)
+	}
+}
+
+func TestPrivateIface(t *testing.T) {
+	p, err := dyno.Dynamic[Foo](func(m reflect.Method, values []reflect.Value) []reflect.Value {
+		return []reflect.Value{reflect.ValueOf(10)}
+	})
+	if err != nil {
+		t.FailNow()
+	}
+	result := p.privateMethod()
+	if result != 10 {
+		t.FailNow()
+	}
+}
+
+func TestStackAlign(t *testing.T) {
+	var args []any
+	p, err := dyno.Dynamic[Foo](func(m reflect.Method, values []reflect.Value) []reflect.Value {
+		for i := range values {
+			args = append(args, values[i].Interface())
+		}
+		return []reflect.Value{reflect.ValueOf(values[0].Interface().(int) + 1)}
+	})
+	if err != nil {
+		t.FailNow()
+	}
+	result := p.MultiArg(10, 20, [2]int{123, 124}, [2]float64{123.1, 124.2})
+	if args[0] != 10 || args[1] != 20 || args[2] != [2]int{123, 124} || args[3] != [2]float64{123.1, 124.2} {
+		fmt.Println("Got wrong args: ", args)
+		t.FailNow()
+	}
+	if result != 11 {
+		fmt.Println("Got wrong result: ", result)
+		t.FailNow()
+	}
+}