Bug 1630119 - Set initial text and selection correctly on sendDummyKeyboardEvent. r=geckoview-reviewers,owlish

This test is rarely failure when initial text and selection correctly. Because
we don't wait for setting initial data, or it is text is too short to update
text.

So I re-write this tests. And also, this has typo fix for test name.

Differential Revision: https://phabricator.services.mozilla.com/D131048

mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/TextInputDelegateTest.kt

@@ -738,21 +738,17 @@ class TextInputDelegateTest : BaseSessionTest() {
     }
 
     @WithDisplay(width = 512, height = 512) // Child process updates require having a display.
-    @Test fun sendDummpyKeyboardEvent() {
+    @Test fun sendDummyKeyboardEvent() {
         // unnecessary for designmode
         assumeThat("Not in designmode", id, not(equalTo("#designmode")))
 
-        mainSession.textInput.view = View(InstrumentationRegistry.getInstrumentation().targetContext)
-
-        mainSession.loadTestPath(INPUTS_PATH)
-        mainSession.waitForPageStop()
-
-        textContent = ""
-        mainSession.evaluateJS("document.querySelector('$id').focus()")
-        mainSession.waitUntilCalled(GeckoSession.TextInputDelegate::class, "restartInput")
+        setupContent("")
 
         val ic = mainSession.textInput.onCreateInputConnection(EditorInfo())!!
-        ic.commitText("a", 1)
+        assertText("Set initial text", ic, "")
+
+        commitText(ic, "foo", 1)
+        assertTextAndSelectionAt("commit text and selection", ic, "foo", 3)
 
         // Dispatching keydown, input and keyup
         val promise =
@@ -763,7 +759,7 @@ class TextInputDelegateTest : BaseSessionTest() {
                                          { once: true }) },
                                      { once: true}))""")
         ic.beginBatchEdit();
-        ic.setSelection(0, 1)
+        ic.setSelection(0, 3)
         ic.setComposingText("", 1)
         ic.endBatchEdit()
         promise.value