1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.net.apf 18 19 import androidx.test.filters.SmallTest 20 import androidx.test.runner.AndroidJUnit4 21 import com.android.testutils.assertThrows 22 import java.util.NoSuchElementException 23 import java.util.concurrent.atomic.AtomicReference 24 import kotlin.test.assertEquals 25 import org.junit.Before 26 import org.junit.Test 27 import org.junit.runner.RunWith 28 import org.mockito.Mock 29 import org.mockito.Mockito.inOrder 30 import org.mockito.MockitoAnnotations 31 32 @RunWith(AndroidJUnit4::class) 33 @SmallTest 34 class JumpTableTest { 35 36 @Mock 37 lateinit var gen: ApfGenerator 38 39 @Before setUpnull40 fun setUp() { 41 MockitoAnnotations.initMocks(this) 42 } 43 44 @Test(expected = NullPointerException::class) testNullStartLabelnull45 fun testNullStartLabel() { 46 // Can't use "null" because the method is @NonNull. 47 JumpTable(AtomicReference<String>(null).get(), 10) 48 } 49 50 @Test(expected = IllegalArgumentException::class) testNegativeSlotnull51 fun testNegativeSlot() { 52 JumpTable("my_jump_table", -1) 53 } 54 55 @Test(expected = IllegalArgumentException::class) testSlotTooLargenull56 fun testSlotTooLarge() { 57 JumpTable("my_jump_table", 13) 58 } 59 60 @Test testValidSlotNumbersnull61 fun testValidSlotNumbers() { 62 JumpTable("my_jump_table", 1) 63 JumpTable("my_jump_table", 10) 64 JumpTable("my_jump_table", 12) 65 } 66 67 @Test testGetStartLabelnull68 fun testGetStartLabel() { 69 assertEquals("xyz", JumpTable("xyz", 3).startLabel) 70 assertEquals("abc", JumpTable("abc", 9).startLabel) 71 } 72 73 @Test testCodeGenerationnull74 fun testCodeGeneration() { 75 val name = "my_jump_table" 76 val slot = 7 77 78 val j = JumpTable(name, slot) 79 j.addLabel("foo") 80 j.addLabel("bar") 81 j.addLabel("bar") 82 j.addLabel("baz") 83 84 assertEquals(0, j.getIndex("foo")) 85 assertEquals(1, j.getIndex("bar")) 86 assertEquals(2, j.getIndex("baz")) 87 88 assertThrows(NoSuchElementException::class.java) { 89 j.getIndex("nonexistent") 90 } 91 92 val inOrder = inOrder(gen) 93 94 j.generate(gen) 95 96 inOrder.verify(gen).defineLabel(name) 97 inOrder.verify(gen).addLoadFromMemory(ApfGenerator.Register.R0, slot) 98 inOrder.verify(gen).addJumpIfR0Equals(0, "foo") 99 inOrder.verify(gen).addJumpIfR0Equals(1, "bar") 100 inOrder.verify(gen).addJumpIfR0Equals(2, "baz") 101 inOrder.verify(gen).addJump(ApfGenerator.PASS_LABEL) 102 inOrder.verifyNoMoreInteractions() 103 } 104 } 105