Added plan of tests

testing/helloworld/go.mod

@@ -1,3 +1,3 @@
 module main.go
 
-go 1.25.5
+go 1.24.5

testing/iterations/Makefile

@@ -0,0 +1,12 @@
+all: run
+
+build:
+	go build -o kek
+
+run: test
+	go run main.go
+test:
+	go test
+
+clean:
+	rm kek

testing/iterations/go.mod

@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.5

testing/iterations/main.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"fmt"
+)
+
+const iterCycles = 5
+
+func Repeat(char string) string {
+	var repeated string
+	for i := 0; i < iterCycles; i++ {
+		repeated += char
+	}
+	return repeated
+}
+
+func main() {
+	fmt.Println(Repeat("kek"))
+}

testing/iterations/repeated_test.go

@@ -0,0 +1,23 @@
+package main
+
+import "testing"
+
+func TestRepeat(t *testing.T) {
+	got := Repeat("a")
+	want := "aaaaa"
+
+	assertionCheck(t, got, want)
+}
+
+func BenchmarkRepeat(b *testing.B) {
+	for b.Loop() {
+		Repeat("a")
+	}
+}
+
+func assertionCheck(t testing.TB, got, want string) {
+	t.Helper()
+	if got != want {
+		t.Errorf("got %q want %q", got, want)
+	}
+}