add unit tests

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

@@ -0,0 +1,67 @@
+package com.example.hpostesting
+
+import android.content.Context
+import com.example.hpostesting.data.CsvWriter
+import org.junit.Assert
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+@RunWith(RobolectricTestRunner::class)
+@Config(manifest = Config.NONE)
+class CsvWriterTest {
+
+    private lateinit var csvWriter: CsvWriter
+    private lateinit var context: Context
+
+    @Before
+    fun setUp() {
+        context = androidx.test.core.app.ApplicationProvider.getApplicationContext()
+        csvWriter = CsvWriter(context)
+    }
+
+    @Test
+    fun writeCsv_Success() {
+        // Arrange
+        val fileName = "test.csv"
+        val data = listOf(
+            arrayOf("1", "A", "1990", "Positive", "2024-02-04", "image_url1", "John Doe"),
+            arrayOf("2", "B", "1985", "Negative", "2024-02-05", "image_url2", "Jane Doe")
+        )
+
+        // Act
+        val result = csvWriter.writeCsv(fileName, data)
+
+        // Assert
+        Assert.assertTrue(result)
+    }
+
+//    @Test
+//    fun writeCsv_Failure() {
+//        // Arrange
+//        val fileName = "test.csv"
+//        val data = listOf(
+//            arrayOf("1", "A", "1990", "Positive", "2024-02-04", "image_url1", "John Doe"),
+//            arrayOf("2", "B", "1985", "Negative", "2024-02-05", "image_url2", "Jane Doe")
+//        )
+//
+//        // Mocking Environment.getExternalStorageDirectory()
+//        val mockFile = Mockito.mock(File::class.java)
+//        Mockito.`when`(Environment.getExternalStorageDirectory()).thenReturn(mockFile)
+//        Mockito.`when`(mockFile.exists()).thenReturn(true)
+//
+//        // Mocking FileWriter to simulate IOException
+//        val mockWriter = Mockito.mock(FileWriter::class.java)
+//        Mockito.`when`(mockWriter.write(Mockito.anyString())).thenThrow(IOException::class.java)
+//        Mockito.`when`(mockFile.absolutePath).thenReturn("/fake/path/to/file.csv")
+//        Mockito.`when`(FileWriter(mockFile)).thenReturn(mockWriter)
+//
+//        // Act
+//        val result = csvWriter.writeCsv(fileName, data)
+//
+//        // Assert
+//        Assert.assertFalse("Expected writeCsv to fail", result)
+//    }
+}

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

@@ -0,0 +1,350 @@
+package com.example.hpostesting
+
+import android.content.Context
+import android.content.SharedPreferences
+import com.example.hpostesting.presentation.trueheme.TrueHemeFragment
+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 TrueHemeFragmentTest {
+
+    @Mock
+    lateinit var mockContext: Context
+
+    @Mock
+    private lateinit var mockSharedPreferences: SharedPreferences
+
+    private lateinit var fragment: TrueHemeFragment
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+        fragment = TrueHemeFragment()
+    }
+
+    @Test
+    fun `extractV2HardwareId to get device id`() {
+        // Arrange
+        Mockito.`when`(
+            mockSharedPreferences.getString(
+                ArgumentMatchers.anyString(),
+                ArgumentMatchers.anyString()
+            )
+        ).thenReturn("dummy_value")
+
+        // Act
+        val deviceId = fragment.extractV2HardwareId("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 = fragment.allReadingsComplete(repeatReadingCount, readingsPerSample)
+
+        // Assert
+        TestCase.assertEquals(true, result)
+        TestCase.assertEquals(fragment.allReadingsComplete(0, 1), false)
+    }
+
+    @Test
+    fun `extractV1HardwareId should return hardware ID when input contains SN`() {
+        // Arrange
+        val input = "Some text SN ABC123 some more text"
+
+        // Act
+        val result = fragment.extractV1HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("ABC123", result)
+    }
+
+    @Test
+    fun `extractV1HardwareId should return null when input does not contain SN`() {
+        // Arrange
+        val input = "Some text without SN"
+
+        // Act
+        val result = fragment.extractV1HardwareId(input)
+
+        // Assert
+        TestCase.assertNull(result)
+    }
+
+    @Test
+    fun `extractV1HardwareId should return null when input is empty`() {
+        // Arrange
+        val input = ""
+
+        // Act
+        val result = fragment.extractV1HardwareId(input)
+
+        // Assert
+        TestCase.assertNull(result)
+    }
+
+    @Test
+    fun `extractV1HardwareId should return null when input is null`() {
+        // Arrange
+        val input: String? = null
+
+        // Act
+        val result = input?.let { fragment.extractV1HardwareId(it) }
+
+        // Assert
+        TestCase.assertNull(result)
+    }
+
+    @Test
+    fun `extractV1HardwareId should return hardware ID when input contains SN in a specific format`() {
+        // Arrange
+        val input = """
+            SN HCV-000-3001
+            #BS
+            #BC
+            #SS
+            #SC
+            RESULT
+            LB1 20636.32
+            LB2 15855.67
+            LB3 21801.36
+            LB4 18362.33
+            LS1 17287
+            LS2 14855.67
+            LS3 15282.31
+            LS4 9737.98
+            REND
+        """.trimIndent()
+
+        // Act
+        val result = fragment.extractV1HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("HCV-000-3001", result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should return the correct hardware ID when it exists in the input`() {
+        // Arrange
+        val input = "SNS ABC123 SNE"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("ABC123", result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should return null when no hardware ID is found in the input`() {
+        // Arrange
+        val input = "No hardware ID in this input"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertNull(result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should handle whitespace around the hardware ID`() {
+        // Arrange
+        val input = "SNS   XYZ789    SNE"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("XYZ789", result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should handle provided input string with HCV-000-3013`() {
+        // Arrange
+        val input = "SNS HCV-000-3013 SNE\n" +
+                "#SS1\n" +
+                "#SC1\n" +
+                "RESULT \n" +
+                "LB1 23411.00\n" +
+                "LB2 21417.00\n" +
+                "LB3 23869.00\n" +
+                "LB4 24967.00\n" +
+                "LS1 3401.00\n" +
+                "LS2 1107.00\n" +
+                "LS3 14410.00\n" +
+                "LS4 15047.00\n" +
+                "REND\n"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("HCV-000-3013", result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should handle provided input string with HPP1-4001`() {
+        // Arrange
+        val input = "SNS HPP1-4001 SNE#SS1\n" +
+                "#SC1\n" +
+                "RESULT\n" +
+                "LB1 23777\n" +
+                "LB2 24130\n" +
+                "LB3 23442\n" +
+                "LB4 23945\n" +
+                "LS1 2521\n" +
+                "LS2 973\n" +
+                "LS3 10252\n" +
+                "LS4 11017\n" +
+                "REND\n"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("HPP1-4001", result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should handle provided input string with HPP1-000-4001`() {
+        // Arrange
+        val input = "SNS HPP1-000-4001 SNE#SS1\n" +
+                "#SC1\n" +
+                "RESULT\n" +
+                "LB1 23777\n" +
+                "LB2 24130\n" +
+                "LB3 23442\n" +
+                "LB4 23945\n" +
+                "LS1 2521\n" +
+                "LS2 973\n" +
+                "LS3 10252\n" +
+                "LS4 11017\n" +
+                "REND\n"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("HPP1-000-4001", result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should handle provided input string with HPP-000-4001`() {
+        // Arrange
+        val input = "SNS HPP-000-4001 SNE#SS1\n" +
+                "#SC1\n" +
+                "RESULT\n" +
+                "LB1 23777\n" +
+                "LB2 24130\n" +
+                "LB3 23442\n" +
+                "LB4 23945\n" +
+                "LS1 2521\n" +
+                "LS2 973\n" +
+                "LS3 10252\n" +
+                "LS4 11017\n" +
+                "REND\n"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("HPP-000-4001", result)
+    }
+
+    @Test
+    fun `extractV2HardwareId should handle provided input string with HPP-000-5001`() {
+        // Arrange
+        val input = "SNS HPP-000-5001 SNE#SS1\n" +
+                "#SC1\n" +
+                "RESULT\n" +
+                "LB1 23777\n" +
+                "LB2 24130\n" +
+                "LB3 23442\n" +
+                "LB4 23945\n" +
+                "LS1 2521\n" +
+                "LS2 973\n" +
+                "LS3 10252\n" +
+                "LS4 11017\n" +
+                "REND\n"
+
+        // Act
+        val result = fragment.extractV2HardwareId(input)
+
+        // Assert
+        TestCase.assertEquals("HPP-000-5001", result)
+    }
+
+    @Test
+    fun testDeviceRatioClassificationNormal() {
+        val ratio = 0.25
+        val result = fragment.deviceRatioClassification(ratio)
+        TestCase.assertEquals("Normal", result)
+    }
+
+    @Test
+    fun testDeviceRatioClassificationNegativeBorderline() {
+        val ratio = 0.31
+        val result = fragment.deviceRatioClassification(ratio)
+        TestCase.assertEquals("Negative Borderline, Repeat Test", result)
+    }
+
+    @Test
+    fun testDeviceRatioClassificationSickleCellTrait() {
+        val ratio = 0.34
+        val result = fragment.deviceRatioClassification(ratio)
+        TestCase.assertEquals("Sickle Cell Trait", result)
+    }
+
+    @Test
+    fun testDeviceRatioClassificationPositiveForSickleCell() {
+        val ratio = 0.37
+        val result = fragment.deviceRatioClassification(ratio)
+        TestCase.assertEquals("Positive for Sickle Cell. HPLC for Confirmation", result)
+    }
+
+    @Test
+    fun testDeviceRatioClassificationSickleCellDisease() {
+        val ratio = 0.45
+        val result = fragment.deviceRatioClassification(ratio)
+        TestCase.assertEquals("Sickle Cell Disease", result)
+    }
+
+    @Test
+    fun testDeviceRatioClassificationInvalid() {
+        val ratio: Double? = null
+        val result = fragment.deviceRatioClassification(ratio)
+        TestCase.assertEquals("Invalid", result)
+    }
+}