test: add RandomViewModelImpl

feature/makecolor/src/test/java/kosenda/makecolor/feature/viewmodel/RandomViewModelImplTest.kt

@@ -0,0 +1,49 @@
+package kosenda.makecolor.feature.viewmodel
+
+import androidx.compose.ui.graphics.Color
+import com.google.common.truth.Truth.assertThat
+import kosenda.makecolor.core.domain.UpdateOtherColorUseCase
+import kosenda.makecolor.core.model.data.RandomType
+import kosenda.makecolor.core.util.colorToRGB
+import kosenda.makecolor.core.util.rgbToColorData
+import org.junit.Test
+
+class RandomViewModelImplTest {
+
+    private val viewModel = RandomViewModelImpl(
+        updateOtherColorUseCase = UpdateOtherColorUseCase(),
+    )
+
+    @Test
+    fun updateColorData_newColor_updatedUiState() {
+        // 色の更新ができることを確認
+        val isRed = viewModel.uiState.value.colorData == rgbToColorData(colorToRGB(Color.Red))
+        val newColor = if (isRed) Color.Blue else Color.Red
+        assertThat(viewModel.uiState.value.colorData)
+            .isNotEqualTo(rgbToColorData(colorToRGB(newColor)))
+        viewModel.updateColorData(color = newColor)
+        assertThat(viewModel.uiState.value.colorData)
+            .isEqualTo(rgbToColorData(colorToRGB(newColor)))
+    }
+
+    @Test
+    fun updateRandomType_everyIndex_updatedUiState() {
+        // ランダムの種類の更新ができることを確認
+        viewModel.updateRandomType(index = RandomType.PASTEL.index)
+        assertThat(viewModel.uiState.value.selectRandomType).isEqualTo(RandomType.PASTEL)
+        viewModel.updateRandomType(index = RandomType.BLACK_AND_WHITE.index)
+        assertThat(viewModel.uiState.value.selectRandomType).isEqualTo(RandomType.BLACK_AND_WHITE)
+        viewModel.updateRandomType(index = RandomType.VIVID.index)
+        assertThat(viewModel.uiState.value.selectRandomType).isEqualTo(RandomType.VIVID)
+        viewModel.updateRandomType(index = RandomType.NOT_SPECIFIED.index)
+        assertThat(viewModel.uiState.value.selectRandomType).isEqualTo(RandomType.NOT_SPECIFIED)
+    }
+
+    @Test
+    fun outputRandomColors_once_updatedUiState() {
+        // ランダムの色の出力ができることを確認
+        val originRandomRGBColors = viewModel.uiState.value.randomRGBColors
+        viewModel.outputRandomColors()
+        assertThat(viewModel.uiState.value.randomRGBColors).isNotEqualTo(originRandomRGBColors)
+    }
+}