refactor: rename output2 to output

Author: superus8r

app/src/main/java/org/kabiri/android/usbterminal/MainActivity.kt

@@ -64,7 +64,7 @@ class MainActivity : AppCompatActivity() {
             UsbTerminalTheme {
                 val autoScrollEnabled = settingViewModel.currentAutoScroll.collectAsState(initial = true).value
                 TerminalOutput(
-                    logs = viewModel.output2,
+                    logs = viewModel.output,
                     autoScroll = autoScrollEnabled,
                 )
             }

app/src/main/java/org/kabiri/android/usbterminal/viewmodel/MainActivityViewModel.kt

@@ -46,7 +46,7 @@ internal class MainActivityViewModel
         val errorMessage: StateFlow<String>
             get() = _errorMessageFlow
 
-        val output2 = SnapshotStateList<OutputText>()
+        val output = SnapshotStateList<OutputText>()
 
         internal fun startObservingUsbDevice() {
             // Subscribe to USB device changes.
@@ -110,7 +110,7 @@ internal class MainActivityViewModel
 
         fun serialWrite(command: String): Boolean {
             val outputText = OutputText(command, OutputText.OutputType.TYPE_NORMAL)
-            output2.add(outputText)
+            output.add(outputText)
             return arduinoUseCase.serialWrite(command)
         }
 
@@ -156,7 +156,7 @@ internal class MainActivityViewModel
                 arduinoDefaultOutput,
                 arduinoInfoOutput,
                 arduinoErrorOutput,
-            ).onEach { output2.add(it) }
+            ).onEach { output.add(it) }
                 .launchIn(viewModelScope)
         }
     }

app/src/test/java/org/kabiri/android/usbterminal/viewmodel/MainActivityViewModelTest.kt

@@ -241,7 +241,7 @@ internal class MainActivityViewModelTest {
             // assert
             verify { mockArduinoUsecase.serialWrite(expected) }
             assertThat(result).isTrue()
-            val outputText = sut.output2.last().text
+            val outputText = sut.output.last().text
             assertThat(outputText).contains(expected)
         }
 
@@ -265,8 +265,8 @@ internal class MainActivityViewModelTest {
             advanceUntilIdle()
 
             // assert
-            assertThat(sut.output2).isNotEmpty()
-            val last = sut.output2.last()
+            assertThat(sut.output).isNotEmpty()
+            val last = sut.output.last()
             assertThat(last.text).isEqualTo("arduino info message")
             assertThat(last.type).isEqualTo(OutputText.OutputType.TYPE_INFO)
         }
@@ -291,8 +291,8 @@ internal class MainActivityViewModelTest {
             advanceUntilIdle()
 
             // assert
-            assertThat(sut.output2).isNotEmpty()
-            val last = sut.output2.last()
+            assertThat(sut.output).isNotEmpty()
+            val last = sut.output.last()
             assertThat(last.text).isEqualTo("default message")
             assertThat(last.type).isEqualTo(OutputText.OutputType.TYPE_NORMAL)
         }