diff --git a/Tests/FakeGPIO.hpp b/Tests/FakeGPIO.hpp
index 77d1871..b85dd9a 100644
--- a/Tests/FakeGPIO.hpp
+++ b/Tests/FakeGPIO.hpp
@@ -7,16 +7,37 @@
 #include "GPIO.hpp"
 
 struct FakeGpio {
-    std::vector<std::string> log;
+    std::vector<std::string> operations;
+    std::vector<uint8_t>     bus_values;
+    std::vector<uint32_t>    delays;
 
-    void set_data_bus(uint8_t val) { log.push_back("data " + std::to_string(val)); }
-    void set_a0(Port port)         { log.push_back(port == Port::ADDRESS ? "a0 ADDR" : "a0 DATA"); }
-    void set_a1(Bank bank)         { log.push_back(bank == Bank::BANK_0 ? "a1 B0" : "a1 B1"); }
-    void set_cs(State s)           { log.push_back(s == State::ACTIVE ? "cs ON" : "cs OFF"); }
-    void set_wr(State s)           { log.push_back(s == State::ACTIVE ? "wr ON" : "wr OFF"); }
-    void set_ic(State s)           { log.push_back(s == State::ACTIVE ? "ic ON" : "ic OFF"); }
-    void set_rd(State s)           { log.push_back(s == State::ACTIVE ? "rd ON" : "rd OFF"); }
-    void delay_ticks(uint32_t n)   { log.push_back("delay " + std::to_string(n)); }
+
+    void set_data_bus(uint8_t val) {
+        operations.push_back("data_bus");
+        bus_values.push_back(val);
+    }
+    void set_a0(Port port) {
+        operations.push_back(port == Port::ADDRESS ? "a0 ADDRESS" : "a0 DATA");
+    }
+    void set_a1(Bank bank) {
+        operations.push_back(bank == Bank::BANK_0 ? "a1 BANK_0" : "a1 BANK_1");
+    }
+    void set_cs(State s) {
+        operations.push_back(s == State::ACTIVE ? "cs ACTIVE" : "cs INACTIVE");
+    }
+    void set_wr(State s) {
+        operations.push_back(s == State::ACTIVE ? "wr ACTIVE" : "wr INACTIVE");
+    }
+    void set_ic(State s) {
+        operations.push_back(s == State::ACTIVE ? "ic ACTIVE" : "ic INACTIVE");
+    }
+    void set_rd(State s) {
+        operations.push_back(s == State::ACTIVE ? "rd ACTIVE" : "rd INACTIVE");
+    }
+    void delay_ticks(uint32_t n) {
+        operations.push_back("delay_ticks");
+        delays.push_back(n);
+    }
 };
 
 #endif
\ No newline at end of file
diff --git a/Tests/test_write.cpp b/Tests/test_write.cpp
index 5c69a13..f706a54 100644
--- a/Tests/test_write.cpp
+++ b/Tests/test_write.cpp
@@ -2,18 +2,22 @@
 #include "YMF262-HAL.hpp"
 #include "FakeGPIO.hpp"
 
-TEST(YMF262Write, FazDoisCiclos) {
+class YMF262_HALWriteTest : public ::testing::Test {
+protected:
     FakeGpio fake;
-    YMF262_HAL<FakeGpio> hal(fake, 14318000, 216000000);
+    YMF262_HAL<FakeGpio> hal{fake, 14318000, 216000000};
+    // ^ fake e hal criados ANTES de cada teste, prontos pra usar
+};
 
+TEST_F(YMF262_HALWriteTest,TestForEmptyRun) {
     hal.write(Bank::BANK_0, 0x40, 0x20);
+    EXPECT_NE(fake.operations.size(),0);
+    EXPECT_NE(fake.bus_values.size(), 0);
+    EXPECT_NE(fake.delays.size(), 0);
 
-    // imprime o que foi registrado (pra você VER a coreografia)
-    for (const auto& linha : fake.log) {
-        std::cout << linha << "\n";
-    }
+}
 
-    // verificações básicas: o primeiro ciclo é endereço, o barramento recebeu 0x40 (64)
-    EXPECT_EQ(fake.log.front(), "a0 ADDR");        // começou em modo endereço
-    EXPECT_FALSE(fake.log.empty());                 // anotou algo
+TEST_F(YMF262_HALWriteTest, A0MudaEntreCiclos) {
+    hal.write(Bank::BANK_0, 0x40, 0x20);
+    EXPECT_EQ(fake.operations.front(), "a0 ADDRESS");
 }
\ No newline at end of file