add unit tests

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

@@ -0,0 +1,84 @@
+package com.example.hpostesting
+
+import android.content.SharedPreferences
+import com.example.hpostesting.presentation.hemocube.HemoCubeFragment
+import com.example.hpostesting.presentation.hemocube.HemocubeActivity
+import `in`.sminnovations.hpostesting.databinding.FragmentHemoCubeReferenceBinding
+import junit.framework.TestCase
+import org.junit.Before
+import org.junit.Test
+import org.mockito.ArgumentMatchers
+import org.mockito.Mock
+import org.mockito.Mockito
+import org.mockito.MockitoAnnotations
+
+class HemoCubeFragmentTest {
+
+    @Mock
+    private lateinit var mockSharedPreferences: SharedPreferences
+
+    @Mock
+    private lateinit var mockActivity: HemocubeActivity // Replace with your actual Activity class
+
+    @Mock
+    private lateinit var mockBinding: FragmentHemoCubeReferenceBinding // Replace with your actual Binding class
+
+    private lateinit var hemoCubeFragment: HemoCubeFragment
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+        hemoCubeFragment = HemoCubeFragment()
+    }
+
+    @Test
+    fun `extractMiddleString to get device id`() {
+        // Arrange
+        Mockito.`when`(
+            mockSharedPreferences.getString(
+                ArgumentMatchers.anyString(),
+                ArgumentMatchers.anyString()
+            )
+        ).thenReturn("dummy_value")
+
+        // Act
+        val deviceId = hemoCubeFragment.extractMiddleString("SNS HPP1-9000 SNE")
+
+        // Assert
+        TestCase.assertEquals("HPP1-9000", deviceId)
+    }
+
+    @Test
+    fun `updateDeviceId in shared pref`() {
+        // Arrange
+        Mockito.`when`(
+            mockSharedPreferences.getString(
+                ArgumentMatchers.anyString(),
+                ArgumentMatchers.anyString()
+            )
+        ).thenReturn("HPP1-0001")
+
+        // Act
+        val deviceId = mockSharedPreferences.getString(
+            ArgumentMatchers.anyString(),
+            ArgumentMatchers.anyString()
+        )
+
+        // Assert
+        TestCase.assertEquals("HPP1-0001", deviceId)
+    }
+
+    @Test
+    fun `allReadingsComplete check`() {
+        // Arrange
+        val repeatReadingCount = 1
+        val readingsPerSample = 1
+
+        // Act
+        val result = hemoCubeFragment.allReadingsComplete(repeatReadingCount, readingsPerSample)
+
+        // Assert
+        TestCase.assertEquals(true, result)
+        TestCase.assertEquals(hemoCubeFragment.allReadingsComplete(0, 1), false)
+    }
+}