openide/java/java-tests/testSrc/com/intellij/util/PopupUtilTest.kt

// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package com.intellij.util

import com.intellij.ide.highlighter.JavaFileType
import com.intellij.ide.ui.IdeUiService
import com.intellij.openapi.editor.ex.EditorEx
import com.intellij.openapi.editor.impl.AbstractEditorTest
import org.junit.Test
import java.awt.Dimension
import java.awt.Point


class PopupUtilTest : AbstractEditorTest() {

  @Test
  fun testPopupPositionsInsideEditor() {
    init("""
      import org.junit.Test
      class TestCase {
        @Test fun tes<caret>t() {}
      }
    """.trimIndent(), JavaFileType.INSTANCE)
    val editor = editor as EditorEx
    editor.scrollPane.viewport.apply {
      viewPosition = Point(0, 0)
      extentSize = Dimension(500, 1000)
    }
    val logicalPosition = editor.caretModel.logicalPosition
    val context = IdeUiService.getInstance().createUiDataContext(editor.contentComponent)
    val xyBalloonPosition = editor.logicalPositionToXY(logicalPosition)
    val xyPopupPosition = Point(xyBalloonPosition.x, xyBalloonPosition.y + editor.lineHeight)
    val balloonPosition = getBestBalloonPosition(context)
    val popupPosition = getBestPopupPosition(context)
    assertEquals(editor.lineHeight, popupPosition.point.y - balloonPosition.point.y)
    assertEquals(0, popupPosition.point.x - balloonPosition.point.x)
    assertEquals(xyBalloonPosition, balloonPosition.point)
    assertEquals(xyPopupPosition, popupPosition.point)
  }
}