Initial commit

app/src/androidTest/java/com/aryan/reader/tts/TtsUtilsTest.kt

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+// TtsUtilsTest.kt
+package com.aryan.reader.tts
+
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+import org.junit.runner.RunWith
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+@RunWith(AndroidJUnit4::class)
+class TtsUtilsTest {
+
+    @Test
+    fun splitTextIntoChunks_withShortText_returnsSingleChunk() {
+        val text = "This is a short sentence."
+        val chunks = splitTextIntoChunks(text, 100)
+        assertThat(chunks).containsExactly("This is a short sentence.")
+    }
+
+    @Test
+    fun splitTextIntoChunks_withMultipleSentences_splitsCorrectly() {
+        val text = "First sentence. Second sentence! Third sentence? And a fourth."
+        val chunks = splitTextIntoChunks(text, 20)
+        assertThat(chunks).containsExactly(
+            "First sentence.",
+            "Second sentence!",
+            "Third sentence?",
+            "And a fourth."
+        ).inOrder()
+    }
+
+    @Test
+    fun splitTextIntoChunks_combinesShortSentences() {
+        val text = "First. Second. Third. Fourth."
+        val chunks = splitTextIntoChunks(text, maxLengthPerChunk = 20)
+        assertThat(chunks).containsExactly(
+            "First. Second.",
+            "Third. Fourth."
+        ).inOrder()
+    }
+
+    @Test
+    fun splitTextIntoChunks_withLongSentence_doesNotSplitSentence() {
+        val text = "This is a very long sentence that exceeds the maximum chunk length but has no punctuation to split on."
+        val chunks = splitTextIntoChunks(text, 50)
+        assertThat(chunks).containsExactly(text)
+    }
+
+    @Test
+    fun splitTextIntoChunks_withEmptyText_returnsEmptyList() {
+        val text = ""
+        val chunks = splitTextIntoChunks(text, 100)
+        assertThat(chunks).isEmpty()
+    }
+
+    @Test
+    fun splitTextIntoChunks_withBlankText_returnsEmptyList() {
+        val text = "   "
+        val chunks = splitTextIntoChunks(text, 100)
+        assertThat(chunks).isEmpty()
+    }
+
+    @Test
+    fun splitTextIntoChunks_handlesAbbreviations() {
+        val text = "Mr. Smith went to Washington. Dr. Jones followed."
+        val chunks = splitTextIntoChunks(text, 40)
+        assertThat(chunks).containsExactly(
+            "Mr. Smith went to Washington.",
+            "Dr. Jones followed."
+        ).inOrder()
+    }
+}