For #6308 - Added unit tests for all `BrowserMenuItem.getHighlight` scenarios

package mozilla.components.browser.menu.ext

import android.graphics.Color

import androidx.test.ext.junit.runners.AndroidJUnit4

import mozilla.components.browser.menu.BrowserMenuHighlight

import mozilla.components.browser.menu.item.BrowserMenuHighlightableItem

import mozilla.components.browser.menu.item.BrowserMenuImageText

import org.junit.Assert

import org.junit.Test

import org.junit.runner.RunWith

@RunWith(AndroidJUnit4::class)

class BrowserMenuItemTest {

    @Test

    fun `highest prio item gets selected`() {

        val highlightLow1 = BrowserMenuHighlight.LowPriority(Color.YELLOW)

        val highlightLow2 = BrowserMenuHighlight.LowPriority(Color.RED)

        val highlightHigh = BrowserMenuHighlight.HighPriority(Color.GREEN)

        val list = listOf(

            BrowserMenuHighlightableItem(

                label = "Test1",

                startImageResource = 0,

                highlight = highlightLow1,

                isHighlighted = { true }

            ),

            BrowserMenuHighlightableItem(

                label = "Test2",

                startImageResource = 0,

                highlight = highlightLow2,

                isHighlighted = { true }

            ),

            BrowserMenuImageText(

                label = "Test3",

                imageResource = 0

            ),

            BrowserMenuHighlightableItem(

                label = "Test4",

                startImageResource = 0,

                highlight = highlightHigh,

                isHighlighted = { true }

            )

        )

        Assert.assertEquals(highlightHigh, list.getHighlight())

    }

    @Test

    fun `invisible item does not get selected`() {

        val highlightedVisible = BrowserMenuHighlightableItem(

            label = "Test1",

            startImageResource = 0,

            highlight = BrowserMenuHighlight.LowPriority(Color.YELLOW),

            isHighlighted = { true }

        )

        val highlightedInvisible = BrowserMenuHighlightableItem(

            label = "Test2",

            startImageResource = 0,

            highlight = BrowserMenuHighlight.HighPriority(Color.GREEN),

            isHighlighted = { true }

        )

        highlightedInvisible.visible = { false }

        val list = listOf(highlightedVisible, highlightedInvisible)

        Assert.assertEquals(highlightedVisible.highlight, list.getHighlight())

    }

    @Test

    fun `non highlightable item does not get selected`() {

        val highlight = BrowserMenuHighlight.LowPriority(Color.YELLOW)

        val highlight2 = BrowserMenuHighlight.HighPriority(Color.GREEN)

        val list = listOf(

            BrowserMenuHighlightableItem(

                label = "Test1",

                startImageResource = 0,

                highlight = highlight,

                isHighlighted = { true }

            ),

            BrowserMenuHighlightableItem(

                label = "Test2",

                startImageResource = 0,

                highlight = highlight2,

                isHighlighted = { false }

            )

        )

        Assert.assertEquals(highlight, list.getHighlight())

    }

    @Test

    fun `higher prio highlight which cannot propagate does not get selected`() {

        val highlight = BrowserMenuHighlight.LowPriority(Color.YELLOW)

        val highlightNonPropagate = BrowserMenuHighlight.HighPriority(Color.GREEN,

            canPropagate = false)

        val list = listOf(

            BrowserMenuHighlightableItem(

                label = "Test1",

                startImageResource = 0,

                highlight = highlight,

                isHighlighted = { true }

            ),

            BrowserMenuHighlightableItem(

                label = "Test2",

                startImageResource = 0,

                highlight = highlightNonPropagate,

                isHighlighted = { true }

            )

        )

        Assert.assertEquals(highlight, list.getHighlight())

    }

}