Added snapshot test for Preview activity

MOB-2955

widgetssdk/src/testSnapshot/java/com/glia/widgets/filepreview/FilePreviewTest.kt

@@ -0,0 +1,57 @@
+package com.glia.widgets.filepreview
+
+import android.view.MenuInflater
+import androidx.annotation.RawRes
+import com.android.ide.common.rendering.api.SessionParams
+import com.glia.widgets.R
+import com.glia.widgets.SnapshotTest
+import com.glia.widgets.StringProvider
+import com.glia.widgets.databinding.FilePreviewActivityBinding
+import com.glia.widgets.di.Dependencies
+import com.glia.widgets.snapshotutils.SnapshotStringProvider
+import org.junit.Test
+
+internal class FilePreviewTest : SnapshotTest(
+    renderingMode = SessionParams.RenderingMode.NORMAL,
+    theme = "Application_Glia_FilePreview_Activity"
+) {
+
+    override fun setUp() {
+        super.setUp()
+
+        val sp: StringProvider = SnapshotStringProvider(context)
+        Dependencies.setStringProvider(sp)
+    }
+
+    @Test
+    fun defaultView() {
+        snapshot(
+            setupView().root
+        )
+    }
+
+    fun setupView(
+        title: String? = "Snapshot preview",
+        showDownloadIcon: Boolean = true,
+        showShareIcon: Boolean = false,
+        @RawRes imageRes: Int? = R.drawable.test_banner
+    ): FilePreviewActivityBinding {
+        val filePreviewActivityBinding = FilePreviewActivityBinding.inflate(layoutInflater)
+
+        filePreviewActivityBinding.toolbar.title = title
+
+        val menu = filePreviewActivityBinding.toolbar.menu
+        MenuInflater(context).inflate(R.menu.menu_file_preview, menu)
+        menu.findItem(R.id.save_item).also {
+            it.isVisible = showDownloadIcon
+        }
+        menu.findItem(R.id.share_item).also {
+            it.isVisible = showShareIcon
+        }
+
+        imageRes?.also { filePreviewActivityBinding.filePreviewView.setImageResource(it) }
+
+        return filePreviewActivityBinding
+    }
+
+}