Improved SearchFragmentTest:

After addressing the issue documented in https://github.com/kiwix/java-libkiwix/pull/61, we now have the ability to search within zim files that do not have a Xapian index. As a result, we have enhanced our test to utilize pre-existing zim files. This improvement leads to reduced time consumption, improved memory efficiency, and minimized network usage impact.

app/src/androidTest/java/org/kiwix/kiwixmobile/search/SearchFragmentTest.kt

@@ -18,27 +18,28 @@
 package org.kiwix.kiwixmobile.search
 
 import androidx.core.content.edit
+import androidx.core.net.toUri
 import androidx.preference.PreferenceManager
 import androidx.test.core.app.ActivityScenario
 import androidx.test.internal.runner.junit4.statement.UiThreadStatement
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.uiautomator.UiDevice
-import com.adevinta.android.barista.interaction.BaristaSleepInteractions
 import leakcanary.LeakAssertions
 import org.junit.After
-import org.junit.Assert
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
 import org.kiwix.kiwixmobile.BaseActivityTest
 import org.kiwix.kiwixmobile.R
 import org.kiwix.kiwixmobile.core.utils.SharedPreferenceUtil
-import org.kiwix.kiwixmobile.download.downloadRobot
 import org.kiwix.kiwixmobile.main.KiwixMainActivity
+import org.kiwix.kiwixmobile.nav.destination.library.LocalLibraryFragmentDirections.actionNavigationLibraryToNavigationReader
 import org.kiwix.kiwixmobile.testutils.RetryRule
-import org.kiwix.kiwixmobile.testutils.TestUtils
 import org.kiwix.kiwixmobile.testutils.TestUtils.closeSystemDialogs
 import org.kiwix.kiwixmobile.testutils.TestUtils.isSystemUINotRespondingDialogVisible
+import java.io.File
+import java.io.FileOutputStream
+import java.io.OutputStream
 
 class SearchFragmentTest : BaseActivityTest() {
 
@@ -67,29 +68,40 @@ class SearchFragmentTest : BaseActivityTest() {
   fun searchFragmentSimple() {
     ActivityScenario.launch(KiwixMainActivity::class.java).onActivity {
       kiwixMainActivity = it
+      kiwixMainActivity.navigate(R.id.libraryFragment)
     }
-    BaristaSleepInteractions.sleep(TestUtils.TEST_PAUSE_MS.toLong())
-    try {
-      downloadRobot {
-        clickLibraryOnBottomNav()
-        deleteZimIfExists(false)
-        clickDownloadOnBottomNav()
-        waitForDataToLoad()
-        downloadZimFile()
-        assertDownloadStart()
-        waitUntilDownloadComplete()
-        clickLibraryOnBottomNav()
-        checkIfZimFileDownloaded()
-        downloadZimFile()
+    val loadFileStream =
+      SearchFragmentTest::class.java.classLoader.getResourceAsStream("testzim.zim")
+    val zimFile = File(context.cacheDir, "testzim.zim")
+    if (zimFile.exists()) zimFile.delete()
+    zimFile.createNewFile()
+    loadFileStream.use { inputStream ->
+      val outputStream: OutputStream = FileOutputStream(zimFile)
+      outputStream.use { it ->
+        val buffer = ByteArray(inputStream.available())
+        var length: Int
+        while (inputStream.read(buffer).also { length = it } > 0) {
+          it.write(buffer, 0, length)
+        }
       }
-    } catch (e: Exception) {
-      Assert.fail(
-        "Couldn't find downloaded file ' Off the Grid ' Original Exception: ${e.message}"
+    }
+    UiThreadStatement.runOnUiThread {
+      kiwixMainActivity.navigate(
+        actionNavigationLibraryToNavigationReader()
+          .apply { zimFileUri = zimFile.toUri().toString() }
       )
     }
     search { checkZimFileSearchSuccessful(R.id.readerFragment) }
     UiThreadStatement.runOnUiThread {
-      kiwixMainActivity.openSearch(searchString = "100R")
+      if (zimFile.canRead()) {
+        kiwixMainActivity.openSearch(searchString = "Android")
+      } else {
+        throw RuntimeException(
+          "File $zimFile is not readable." +
+            " Original File $zimFile is readable = ${zimFile.canRead()}" +
+            " Size ${zimFile.length()}"
+        )
+      }
     }
     search {
       clickOnSearchItemInSearchList()