test(sidecar): assert InputText types at cursor without clearing

Captures the adb command stream and verifies a single input-text call
with no preceding delete keyevents, plus the adb escaping cases.

sidecar/src/test/kotlin/dev/sanderling/sidecar/InputTextTest.kt

@@ -0,0 +1,38 @@
+package dev.sanderling.sidecar
+
+import org.junit.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class InputTextTest {
+
+    @Test fun inputTextTypesAtCursorWithoutClearing() {
+        val commands = mutableListOf<List<String>>()
+        val backend = StubDriverBackend("android") { commands.add(it) }
+
+        backend.inputText("Emergency Fund")
+
+        assertEquals(listOf(listOf("shell", "input", "text", "Emergency%sFund")), commands)
+    }
+
+    @Test fun escapeForAdbInputTextSubstitutesSpaces() {
+        assertEquals("hello%sworld", StubDriverBackend.escapeForAdbInputText("hello world"))
+    }
+
+    @Test fun escapeForAdbInputTextEscapesShellMetacharacters() {
+        val escaped = StubDriverBackend.escapeForAdbInputText("a&b|c;d\$e`f")
+        assertEquals("a\\&b\\|c\\;d\\\$e\\`f", escaped)
+    }
+
+    @Test fun escapeForAdbInputTextEscapesQuotesAndBackslash() {
+        assertEquals("\\'", StubDriverBackend.escapeForAdbInputText("'"))
+        assertEquals("\\\"", StubDriverBackend.escapeForAdbInputText("\""))
+        assertEquals("\\\\", StubDriverBackend.escapeForAdbInputText("\\"))
+    }
+
+    @Test fun escapeForAdbInputTextLeavesSimpleTextAlone() {
+        assertEquals("12.34", StubDriverBackend.escapeForAdbInputText("12.34"))
+        assertEquals("Coffee", StubDriverBackend.escapeForAdbInputText("Coffee"))
+        assertTrue("-5" == StubDriverBackend.escapeForAdbInputText("-5"))
+    }
+}