1 // Copyright 2016 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/v8.h" 6 7 #include "src/interpreter/source-position-table.h" 8 #include "test/unittests/test-utils.h" 9 10 namespace v8 { 11 namespace internal { 12 namespace interpreter { 13 14 class SourcePositionTableTest : public TestWithIsolateAndZone { 15 public: 16 SourcePositionTableTest() {} 17 ~SourcePositionTableTest() override {} 18 }; 19 20 // Some random offsets, mostly at 'suspicious' bit boundaries. 21 static int offsets[] = {0, 1, 2, 3, 4, 30, 31, 32, 22 33, 62, 63, 64, 65, 126, 127, 128, 23 129, 250, 1000, 9999, 12000, 31415926}; 24 25 TEST_F(SourcePositionTableTest, EncodeStatement) { 26 SourcePositionTableBuilder builder(isolate(), zone()); 27 for (int i = 0; i < arraysize(offsets); i++) { 28 builder.AddPosition(offsets[i], offsets[i], true); 29 } 30 31 // To test correctness, we rely on the assertions in ToSourcePositionTable(). 32 // (Also below.) 33 CHECK(!builder.ToSourcePositionTable().is_null()); 34 } 35 36 TEST_F(SourcePositionTableTest, EncodeStatementDuplicates) { 37 SourcePositionTableBuilder builder(isolate(), zone()); 38 for (int i = 0; i < arraysize(offsets); i++) { 39 builder.AddPosition(offsets[i], offsets[i], true); 40 builder.AddPosition(offsets[i], offsets[i] + 1, true); 41 } 42 43 // To test correctness, we rely on the assertions in ToSourcePositionTable(). 44 // (Also below.) 45 CHECK(!builder.ToSourcePositionTable().is_null()); 46 } 47 48 TEST_F(SourcePositionTableTest, EncodeExpression) { 49 SourcePositionTableBuilder builder(isolate(), zone()); 50 for (int i = 0; i < arraysize(offsets); i++) { 51 builder.AddPosition(offsets[i], offsets[i], false); 52 } 53 CHECK(!builder.ToSourcePositionTable().is_null()); 54 } 55 56 TEST_F(SourcePositionTableTest, EncodeAscending) { 57 SourcePositionTableBuilder builder(isolate(), zone()); 58 59 int code_offset = 0; 60 int source_position = 0; 61 for (int i = 0; i < arraysize(offsets); i++) { 62 code_offset += offsets[i]; 63 source_position += offsets[i]; 64 if (i % 2) { 65 builder.AddPosition(code_offset, source_position, true); 66 } else { 67 builder.AddPosition(code_offset, source_position, false); 68 } 69 } 70 71 // Also test negative offsets for source positions: 72 for (int i = 0; i < arraysize(offsets); i++) { 73 code_offset += offsets[i]; 74 source_position -= offsets[i]; 75 if (i % 2) { 76 builder.AddPosition(code_offset, source_position, true); 77 } else { 78 builder.AddPosition(code_offset, source_position, false); 79 } 80 } 81 82 CHECK(!builder.ToSourcePositionTable().is_null()); 83 } 84 85 } // namespace interpreter 86 } // namespace internal 87 } // namespace v8 88
