| // Copyright 2014 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.devtools.build.lib.syntax; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.google.devtools.build.lib.syntax.SkylarkList.Tuple; |
| import com.google.devtools.build.lib.syntax.util.EvaluationTestCase; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Tests for SkylarkList. |
| */ |
| @RunWith(JUnit4.class) |
| public class SkylarkListTest extends EvaluationTestCase { |
| |
| @Test |
| public void testIndex() throws Exception { |
| eval("l = [1, '2', 3]"); |
| assertThat(eval("l[0]")).isEqualTo(1); |
| assertThat(eval("l[1]")).isEqualTo("2"); |
| assertThat(eval("l[2]")).isEqualTo(3); |
| |
| eval("t = (1, '2', 3)"); |
| assertThat(eval("t[0]")).isEqualTo(1); |
| assertThat(eval("t[1]")).isEqualTo("2"); |
| assertThat(eval("t[2]")).isEqualTo(3); |
| } |
| |
| @Test |
| public void testIndexOutOfBounds() throws Exception { |
| checkEvalError("Index out of range (index is 3, but sequence has 3 elements)", |
| "['a', 'b', 'c'][3]"); |
| checkEvalError("Index out of range (index is 10, but sequence has 3 elements)", |
| "['a', 'b', 'c'][10]"); |
| checkEvalError("Index out of range (index is 0, but sequence has 0 elements)", |
| "[][0]"); |
| } |
| |
| @Test |
| public void testNegativeIndices() throws Exception { |
| eval("l = ['a', 'b', 'c']"); |
| assertThat(eval("l[0]")).isEqualTo("a"); |
| assertThat(eval("l[-1]")).isEqualTo("c"); |
| assertThat(eval("l[-2]")).isEqualTo("b"); |
| assertThat(eval("l[-3]")).isEqualTo("a"); |
| checkEvalError("Index out of range (index is -4, but sequence has 3 elements)", |
| "l[-4]"); |
| checkEvalError("Index out of range (index is -1, but sequence has 0 elements)", |
| "[][-1]"); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private SkylarkList<Object> listEval(String... input) throws Exception { |
| return (SkylarkList<Object>) eval(input); |
| } |
| |
| @Test |
| public void testSlice() throws Exception { |
| eval("l = ['a', 'b', 'c']"); |
| assertThat(listEval("l[0:3]")).containsExactly("a", "b", "c").inOrder(); |
| assertThat(listEval("l[0:2]")).containsExactly("a", "b").inOrder(); |
| assertThat(listEval("l[0:1]")).containsExactly("a").inOrder(); |
| assertThat(listEval("l[0:0]")).isEmpty(); |
| assertThat(listEval("l[1:3]")).containsExactly("b", "c").inOrder(); |
| assertThat(listEval("l[2:3]")).containsExactly("c").inOrder(); |
| assertThat(listEval("l[3:3]")).isEmpty(); |
| assertThat(listEval("l[2:1]")).isEmpty(); |
| assertThat(listEval("l[3:0]")).isEmpty(); |
| |
| eval("t = ('a', 'b', 'c')"); |
| assertThat(listEval("t[0:3]")).containsExactly("a", "b", "c").inOrder(); |
| assertThat(listEval("t[1:2]")).containsExactly("b").inOrder(); |
| } |
| |
| @Test |
| public void testSliceDefault() throws Exception { |
| eval("l = ['a', 'b', 'c']"); |
| assertThat(listEval("l[:]")).containsExactly("a", "b", "c").inOrder(); |
| assertThat(listEval("l[:2]")).containsExactly("a", "b").inOrder(); |
| assertThat(listEval("l[2:]")).containsExactly("c").inOrder(); |
| } |
| |
| @Test |
| public void testSliceNegative() throws Exception { |
| eval("l = ['a', 'b', 'c']"); |
| assertThat(listEval("l[-2:-1]")).containsExactly("b").inOrder(); |
| assertThat(listEval("l[-2:]")).containsExactly("b", "c").inOrder(); |
| assertThat(listEval("l[0:-1]")).containsExactly("a", "b").inOrder(); |
| assertThat(listEval("l[-1:1]")).isEmpty(); |
| } |
| |
| @Test |
| public void testSliceBounds() throws Exception { |
| eval("l = ['a', 'b', 'c']"); |
| assertThat(listEval("l[0:5]")).containsExactly("a", "b", "c").inOrder(); |
| assertThat(listEval("l[-10:2]")).containsExactly("a", "b").inOrder(); |
| assertThat(listEval("l[3:10]")).isEmpty(); |
| assertThat(listEval("l[-10:-9]")).isEmpty(); |
| } |
| |
| @Test |
| public void testSliceSkip() throws Exception { |
| eval("l = ['a', 'b', 'c', 'd', 'e', 'f', 'g']"); |
| assertThat(listEval("l[0:6:2]")).containsExactly("a", "c", "e").inOrder(); |
| assertThat(listEval("l[0:7:2]")).containsExactly("a", "c", "e", "g").inOrder(); |
| assertThat(listEval("l[0:10:2]")).containsExactly("a", "c", "e", "g").inOrder(); |
| assertThat(listEval("l[-6:10:2]")).containsExactly("b", "d", "f").inOrder(); |
| assertThat(listEval("l[1:5:3]")).containsExactly("b", "e").inOrder(); |
| assertThat(listEval("l[-10:3:2]")).containsExactly("a", "c").inOrder(); |
| assertThat(listEval("l[-10:10:1]")).containsExactly( |
| "a", "b", "c", "d", "e", "f", "g").inOrder(); |
| } |
| |
| @Test |
| public void testSliceNegativeSkip() throws Exception { |
| eval("l = ['a', 'b', 'c', 'd', 'e', 'f', 'g']"); |
| assertThat(listEval("l[5:2:-1]")).containsExactly("f", "e", "d").inOrder(); |
| assertThat(listEval("l[5:2:-2]")).containsExactly("f", "d").inOrder(); |
| assertThat(listEval("l[5:3:-2]")).containsExactly("f").inOrder(); |
| assertThat(listEval("l[6::-4]")).containsExactly("g", "c").inOrder(); |
| assertThat(listEval("l[7::-4]")).containsExactly("g", "c").inOrder(); |
| assertThat(listEval("l[-1::-4]")).containsExactly("g", "c").inOrder(); |
| assertThat(listEval("l[-1:-10:-4]")).containsExactly("g", "c").inOrder(); |
| assertThat(listEval("l[-1:-3:-4]")).containsExactly("g").inOrder(); |
| assertThat(listEval("l[2:5:-1]")).isEmpty(); |
| assertThat(listEval("l[-10:5:-1]")).isEmpty(); |
| assertThat(listEval("l[1:-8:-1]")).containsExactly("b", "a").inOrder(); |
| |
| checkEvalError("Slice step cannot be zero", "l[2:5:0]"); |
| } |
| |
| @Test |
| public void testListSize() throws Exception { |
| assertThat(eval("len([42, 'hello, world', []])")).isEqualTo(3); |
| } |
| |
| @Test |
| public void testListEmpty() throws Exception { |
| assertThat(eval("8 if [1, 2, 3] else 9")).isEqualTo(8); |
| assertThat(eval("8 if [] else 9")).isEqualTo(9); |
| } |
| |
| @Test |
| public void testListConcat() throws Exception { |
| assertThat(eval("[1, 2] + [3, 4]")) |
| .isEqualTo(SkylarkList.createImmutable(Tuple.of(1, 2, 3, 4))); |
| } |
| |
| @Test |
| public void testConcatListIndex() throws Exception { |
| eval("l = [1, 2] + [3, 4]", |
| "e0 = l[0]", |
| "e1 = l[1]", |
| "e2 = l[2]", |
| "e3 = l[3]"); |
| assertEquals(1, lookup("e0")); |
| assertEquals(2, lookup("e1")); |
| assertEquals(3, lookup("e2")); |
| assertEquals(4, lookup("e3")); |
| } |
| |
| @Test |
| public void testConcatListHierarchicalIndex() throws Exception { |
| eval("l = [1] + (([2] + [3, 4]) + [5])", |
| "e0 = l[0]", |
| "e1 = l[1]", |
| "e2 = l[2]", |
| "e3 = l[3]", |
| "e4 = l[4]"); |
| assertEquals(1, lookup("e0")); |
| assertEquals(2, lookup("e1")); |
| assertEquals(3, lookup("e2")); |
| assertEquals(4, lookup("e3")); |
| assertEquals(5, lookup("e4")); |
| } |
| |
| @Test |
| public void testConcatListSize() throws Exception { |
| assertEquals(4, eval("len([1, 2] + [3, 4])")); |
| } |
| |
| @Test |
| public void testAppend() throws Exception { |
| eval("l = [1, 2]"); |
| assertEquals(eval("l.append([3, 4])"), Runtime.NONE); |
| assertEquals(lookup("l"), eval("[1, 2, [3, 4]]")); |
| } |
| |
| @Test |
| public void testExtend() throws Exception { |
| eval("l = [1, 2]"); |
| assertEquals(eval("l.extend([3, 4])"), Runtime.NONE); |
| assertEquals(lookup("l"), eval("[1, 2, 3, 4]")); |
| } |
| |
| @Test |
| public void testConcatListToString() throws Exception { |
| eval("l = [1, 2] + [3, 4]", |
| "s = str(l)"); |
| assertEquals("[1, 2, 3, 4]", lookup("s")); |
| } |
| |
| @Test |
| public void testConcatListNotEmpty() throws Exception { |
| eval("l = [1, 2] + [3, 4]", |
| "if l:", |
| " v = 1", |
| "else:", |
| " v = 0"); |
| assertEquals(1, lookup("v")); |
| } |
| |
| @Test |
| public void testConcatListEmpty() throws Exception { |
| eval("l = [] + []", |
| "if l:", |
| " v = 1", |
| "else:", |
| " v = 0"); |
| assertEquals(0, lookup("v")); |
| } |
| |
| @Test |
| public void testListComparison() throws Exception { |
| assertEquals(true, eval("(1, 'two', [3, 4]) == (1, 'two', [3, 4])")); |
| assertEquals(true, eval("[1, 2, 3, 4] == [1, 2] + [3, 4]")); |
| assertEquals(false, eval("[1, 2, 3, 4] == (1, 2, 3, 4)")); |
| assertEquals(false, eval("[1, 2] == [1, 2, 3]")); |
| assertEquals(true, eval("[] == []")); |
| assertEquals(true, eval("() == ()")); |
| assertEquals(false, eval("() == (1,)")); |
| assertEquals(false, eval("(1) == (1,)")); |
| } |
| } |