1 /*
<lambda>null2 * Copyright (C) 2019 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 @file:JvmName("MiscAsserts")
18
19 package com.android.testutils
20
21 import com.android.testutils.FunctionalUtils.ThrowingRunnable
22 import java.lang.reflect.Modifier
23 import kotlin.system.measureTimeMillis
24 import kotlin.test.assertEquals
25 import kotlin.test.assertFailsWith
26 import kotlin.test.assertFalse
27 import kotlin.test.assertTrue
28
29 private const val TAG = "Connectivity unit test"
30
31 fun <T> assertEmpty(ts: Array<T>) = ts.size.let { len ->
32 assertEquals(0, len, "Expected empty array, but length was $len")
33 }
34
lennull35 fun <T> assertEmpty(ts: Collection<T>) = ts.size.let { len ->
36 assertEquals(0, len, "Expected empty collection, but length was $len")
37 }
38
lennull39 fun <T> assertLength(expected: Int, got: Array<T>) = got.size.let { len ->
40 assertEquals(expected, len, "Expected array of length $expected, but was $len for $got")
41 }
42
lennull43 fun <T> assertLength(expected: Int, got: List<T>) = got.size.let { len ->
44 assertEquals(expected, len, "Expected list of length $expected, but was $len for $got")
45 }
46
47 // Bridge method to help write this in Java. If you're writing Kotlin, consider using
48 // kotlin.test.assertFailsWith instead, as that method is reified and inlined.
assertThrowsnull49 fun <T : Exception> assertThrows(expected: Class<T>, block: ThrowingRunnable): T {
50 return assertFailsWith(expected.kotlin) { block.run() }
51 }
52
assertThrowsnull53 fun <T : Exception> assertThrows(msg: String, expected: Class<T>, block: ThrowingRunnable): T {
54 return assertFailsWith(expected.kotlin, msg) { block.run() }
55 }
56
assertEqualBothWaysnull57 fun <T> assertEqualBothWays(o1: T, o2: T) {
58 assertTrue(o1 == o2)
59 assertTrue(o2 == o1)
60 }
61
assertNotEqualEitherWaynull62 fun <T> assertNotEqualEitherWay(o1: T, o2: T) {
63 assertFalse(o1 == o2)
64 assertFalse(o2 == o1)
65 }
66
assertStringContainsnull67 fun assertStringContains(got: String, want: String) {
68 assertTrue(got.contains(want), "$got did not contain \"${want}\"")
69 }
70
assertContainsExactlynull71 fun assertContainsExactly(actual: IntArray, vararg expected: Int) {
72 // IntArray#sorted() returns a list, so it's fine to test with equals()
73 assertEquals(actual.sorted(), expected.sorted(),
74 "$actual does not contain exactly $expected")
75 }
76
assertContainsStringsExactlynull77 fun assertContainsStringsExactly(actual: Array<String>, vararg expected: String) {
78 assertEquals(actual.sorted(), expected.sorted(),
79 "$actual does not contain exactly $expected")
80 }
81
assertContainsAllnull82 fun <T> assertContainsAll(list: Collection<T>, vararg elems: T) {
83 assertContainsAll(list, elems.asList())
84 }
85
assertContainsAllnull86 fun <T> assertContainsAll(list: Collection<T>, elems: Collection<T>) {
87 elems.forEach { assertTrue(list.contains(it), "$it not in list") }
88 }
89
assertRunsInAtMostnull90 fun assertRunsInAtMost(descr: String, timeLimit: Long, fn: Runnable) {
91 assertRunsInAtMost(descr, timeLimit) { fn.run() }
92 }
93
assertRunsInAtMostnull94 fun assertRunsInAtMost(descr: String, timeLimit: Long, fn: () -> Unit) {
95 val timeTaken = measureTimeMillis(fn)
96 val msg = String.format("%s: took %dms, limit was %dms", descr, timeTaken, timeLimit)
97 assertTrue(timeTaken <= timeLimit, msg)
98 }
99
100 /**
101 * Verifies that the number of nonstatic fields in a java class equals a given count.
102 * Note: this is essentially not useful for Kotlin code where fields are not really a thing.
103 *
104 * This assertion serves as a reminder to update test code around it if fields are added
105 * after the test is written.
106 * @param count Expected number of nonstatic fields in the class.
107 * @param clazz Class to test.
108 */
assertFieldCountEqualsnull109 fun <T> assertFieldCountEquals(count: Int, clazz: Class<T>) {
110 assertEquals(count, clazz.declaredFields.filter {
111 !Modifier.isStatic(it.modifiers) && !Modifier.isTransient(it.modifiers)
112 }.size)
113 }
114
assertSameElementsnull115 fun <T> assertSameElements(expected: List<T>, actual: List<T>) {
116 val expectedSet: HashSet<T> = HashSet(expected)
117 assertEquals(expectedSet.size, expected.size, "expected list contains duplicates")
118 val actualSet: HashSet<T> = HashSet(actual)
119 assertEquals(actualSet.size, actual.size, "actual list contains duplicates")
120 assertEquals(expectedSet, actualSet)
121 }