add new test

Author: david-allison

AnkiDroid/src/test/java/com/ichi2/anki/CardBrowserScreenshotTest.kt

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2026 David Allison <davidallisongithub@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.ichi2.anki
+
+import android.view.Gravity
+import android.view.View
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.core.graphics.Insets
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Screenshot tests for [CardBrowser]
+ *
+ * `./gradlew :AnkiDroid:verifyRoborazziPlayDebug -Pscreenshot --tests "com.ichi2.anki.CardBrowserScreenshotTest"`
+ */
+@RunWith(AndroidJUnit4::class)
+class CardBrowserScreenshotTest : ScreenshotTest() {
+    @Test
+    fun cardBrowserWith30Notes() =
+        withCardBrowser(noteCount = 50) { browser ->
+            // Robolectric reports zero system-bar insets by default. Inject realistic ones
+            // so the app's edge-to-edge layout responds as it would on a real device.
+            val density = browser.resources.displayMetrics.density
+            val statusBarPx = (24 * density).toInt()
+            val navBarPx = (48 * density).toInt()
+            val insets =
+                WindowInsetsCompat
+                    .Builder()
+                    .setInsets(WindowInsetsCompat.Type.statusBars(), Insets.of(0, statusBarPx, 0, 0))
+                    .setInsets(WindowInsetsCompat.Type.navigationBars(), Insets.of(0, 0, 0, navBarPx))
+                    .build()
+            ViewCompat.dispatchApplyWindowInsets(browser.window.decorView, insets)
+
+            // overlay a translucent band where the nav bar would sit
+            // to see if content is drawn underneath it
+            val decor = browser.window.decorView as ViewGroup
+            val navBarOverlay =
+                View(browser).apply {
+                    setBackgroundColor(0x80000000.toInt())
+                }
+            decor.addView(
+                navBarOverlay,
+                FrameLayout.LayoutParams(
+                    FrameLayout.LayoutParams.MATCH_PARENT,
+                    navBarPx,
+                    Gravity.BOTTOM,
+                ),
+            )
+
+            captureScreen("30_notes")
+        }
+}

AnkiDroid/src/test/java/com/ichi2/anki/CardBrowserTest.kt

@@ -974,26 +974,6 @@ class CardBrowserTest : RobolectricTest() {
         advanceRobolectricLooper()
     }
 
-    /** Returns an instance of [CardBrowser] containing [noteCount] notes */
-    private fun getBrowserWithNotes(
-        noteCount: Int,
-        reversed: Boolean = false,
-    ): CardBrowser {
-        ensureCollectionLoadIsSynchronous()
-        if (reversed) {
-            for (i in 0 until noteCount) {
-                addBasicAndReversedNote(i.toString(), "back")
-            }
-        } else {
-            for (i in 0 until noteCount) {
-                addBasicNote(i.toString(), "back")
-            }
-        }
-        return super.startRegularActivity<CardBrowser>(Intent()).also {
-            advanceRobolectricLooper() // may be a fix for flaky tests
-        }
-    }
-
     private val browserWithNoNewCards: CardBrowser
         get() = getBrowserWithNotes(0)
 
@@ -2132,3 +2112,30 @@ suspend fun CardBrowser.selectAll() {
 
 val CardBrowser.menu: Menu
     get() = if (this.useSearchView) cardBrowserFragment.searchBar!!.menu else shadowOf(this).optionsMenu!!
+
+/** Returns an instance of [CardBrowser] containing [noteCount] notes */
+context(test: RobolectricTest)
+fun getBrowserWithNotes(
+    noteCount: Int,
+    reversed: Boolean = false,
+): CardBrowser {
+    test.ensureCollectionLoadIsSynchronous()
+    if (reversed) {
+        for (i in 0 until noteCount) {
+            test.addBasicAndReversedNote(i.toString(), "back")
+        }
+    } else {
+        for (i in 0 until noteCount) {
+            test.addBasicNote(i.toString(), "back")
+        }
+    }
+    return test.startRegularActivity<CardBrowser>(Intent()).also {
+        advanceRobolectricLooper() // may be a fix for flaky tests
+    }
+}
+
+context(test: RobolectricTest)
+fun withCardBrowser(
+    noteCount: Int,
+    block: (CardBrowser) -> Unit,
+) = block(getBrowserWithNotes(noteCount))