chore: establish local platform baseline

internal/idempotency/executor_test.go

@@ -0,0 +1,20 @@
+package idempotency
+
+import "testing"
+
+func TestHashIsStable(t *testing.T) {
+	first := Hash([]byte(`{"name":"test"}`))
+	second := Hash([]byte(`{"name":"test"}`))
+	if first != second || len(first) != 64 {
+		t.Fatalf("unexpected hashes: %q %q", first, second)
+	}
+	if first == Hash([]byte(`{"name":"other"}`)) {
+		t.Fatal("different bodies should not have the same hash")
+	}
+}
+
+func TestValidateRequest(t *testing.T) {
+	if err := validateRequest(Request{}); err == nil {
+		t.Fatal("empty request should fail")
+	}
+}