TracingStatusHelper unit test (#114)

* TracingStatusHelper unit test

* removed duplicate

Corona-Warn-App/src/androidTest/java/de/rki/coronawarnapp/ExampleInstrumentedTest.kt

-package de.rki.coronawarnapp
-
-import androidx.test.ext.junit.runners.AndroidJUnit4
-import androidx.test.platform.app.InstrumentationRegistry
-import org.junit.Assert.assertEquals
-import org.junit.Test
-import org.junit.runner.RunWith
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("de.rki.coronawarnapp", appContext.packageName)
-    }
-}

Corona-Warn-App/src/test/java/de/rki/coronawarnapp/ExampleUnitTest.kt

-package de.rki.coronawarnapp
-
-import org.junit.Assert.assertEquals
-import org.junit.Test
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-class ExampleUnitTest {
-    @Test
-    fun addition_isCorrect() {
-        assertEquals(4, 2 + 2)
-    }
-}

Corona-Warn-App/src/test/java/de/rki/coronawarnapp/util/formatter/TracingStatusHelperTest.kt

+package de.rki.coronawarnapp.util.formatter
+
+import org.hamcrest.CoreMatchers.`is`
+import org.hamcrest.MatcherAssert.assertThat
+import org.junit.Test
+
+class TracingStatusHelperTest {
+
+    @Test
+    fun testTracingActiveAllOn() {
+        val result = tracingStatusHelper(tracing = true, bluetooth = true, connection = true)
+        assertThat(result, `is`((TracingStatusHelper.TRACING_ACTIVE)))
+    }
+
+    @Test
+    fun testTracingInactiveWhenAllOff() {
+        val result = tracingStatusHelper(tracing = false, bluetooth = false, connection = false)
+        assertThat(result, `is`((TracingStatusHelper.TRACING_INACTIVE)))
+    }
+
+    @Test
+    fun testTracingInactiveWhenTracingOffBluetoothOffConnectionOn() {
+        val result = tracingStatusHelper(tracing = false, bluetooth = false, connection = true)
+        assertThat(result, `is`((TracingStatusHelper.TRACING_INACTIVE)))
+    }
+
+    @Test
+    fun testTracingInactiveWhenTracingOffBluetoothOnConnectionOff() {
+        val result = tracingStatusHelper(tracing = false, bluetooth = true, connection = false)
+        assertThat(result, `is`((TracingStatusHelper.TRACING_INACTIVE)))
+    }
+
+    @Test
+    fun testTracingInactiveWhenTracingOffBluetoothOnConnectionOn() {
+        val result = tracingStatusHelper(tracing = false, bluetooth = true, connection = true)
+        assertThat(result, `is`((TracingStatusHelper.TRACING_INACTIVE)))
+    }
+
+    @Test
+    fun testBluetoothInactiveWhenTracingOnBluetoothOffConnectionOn() {
+        val result = tracingStatusHelper(tracing = true, bluetooth = false, connection = true)
+        assertThat(result, `is`((TracingStatusHelper.BLUETOOTH)))
+    }
+
+    @Test
+    fun testBluetoothInactiveWhenTracingOnBluetoothOffConnectionOff() {
+        val result = tracingStatusHelper(tracing = true, bluetooth = false, connection = false)
+        assertThat(result, `is`((TracingStatusHelper.BLUETOOTH)))
+    }
+
+    @Test
+    fun testConnectionInactiveWhenTracingOnBluetoothOffConnectionOff() {
+        val result = tracingStatusHelper(tracing = true, bluetooth = true, connection = false)
+        assertThat(result, `is`((TracingStatusHelper.CONNECTION)))
+    }
+}
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