unit tests for lower and uppper bounds

app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt

@@ -970,7 +970,7 @@ class HemoCubeFragment : Fragment() {
                     return "Sickle Cell Trait"
                 if (ratio in 0.31..0.36)
                     return "Positive for Sickle Cell. HPLC for Confirmation"
-                if (ratio in 0.37..0.56)
+                if (ratio in 0.36..0.56)
                     return "Sickle Cell Disease"
             } else {
                 return "Invalid"

app/src/test/java/com/example/hpostesting/HemoCubeFragmentTest.kt

@@ -338,12 +338,19 @@ class HemoCubeFragmentTest {
     }
 
     @Test
-    fun testDeviceRatioClassificationSickleCellTrait() {
+    fun testDeviceRatioClassificationSickleCellTraitLowerBound() {
         val ratio = 0.251
         val result = hemoCubeFragment.deviceRatioClassification(ratio)
         assertEquals("Sickle Cell Trait", result)
     }
 
+    @Test
+    fun testDeviceRatioClassificationSickleCellTraitUpperBound() {
+        val ratio = 0.309
+        val result = hemoCubeFragment.deviceRatioClassification(ratio)
+        assertEquals("Sickle Cell Trait", result)
+    }
+
     @Test
     fun testDeviceRatioClassificationPositiveForSickleCell() {
         val ratio = 0.359
@@ -351,6 +358,13 @@ class HemoCubeFragmentTest {
         assertEquals("Positive for Sickle Cell. HPLC for Confirmation", result)
     }
 
+    @Test
+    fun testDeviceRatioClassificationSickleCellDiseaseLowerBound() {
+        val ratio = 0.361
+        val result = hemoCubeFragment.deviceRatioClassification(ratio)
+        assertEquals("Sickle Cell Disease", result)
+    }
+
     @Test
     fun testDeviceRatioClassificationSickleCellDisease() {
         val ratio = 0.45