1 // Copyright 2014 The Chromium 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 "testing/gtest/include/gtest/gtest.h" 6 #include "tools/gn/input_file.h" 7 #include "tools/gn/parse_tree.h" 8 #include "tools/gn/scope.h" 9 #include "tools/gn/test_with_scope.h" 10 11 TEST(ParseTree, Accessor) { 12 TestWithScope setup; 13 14 // Make a pretend parse node with proper tracking that we can blame for the 15 // given value. 16 InputFile input_file(SourceFile("//foo")); 17 Token base_token(Location(&input_file, 1, 1, 1), Token::IDENTIFIER, "a"); 18 Token member_token(Location(&input_file, 1, 1, 1), Token::IDENTIFIER, "b"); 19 20 AccessorNode accessor; 21 accessor.set_base(base_token); 22 23 scoped_ptr<IdentifierNode> member_identifier( 24 new IdentifierNode(member_token)); 25 accessor.set_member(member_identifier.Pass()); 26 27 // The access should fail because a is not defined. 28 Err err; 29 Value result = accessor.Execute(setup.scope(), &err); 30 EXPECT_TRUE(err.has_error()); 31 EXPECT_EQ(Value::NONE, result.type()); 32 33 // Define a as a Scope. It should still fail because b isn't defined. 34 err = Err(); 35 setup.scope()->SetValue("a", 36 Value(NULL, scoped_ptr<Scope>(new Scope(setup.scope()))), NULL); 37 result = accessor.Execute(setup.scope(), &err); 38 EXPECT_TRUE(err.has_error()); 39 EXPECT_EQ(Value::NONE, result.type()); 40 41 // Define b, accessor should succeed now. 42 const int64 kBValue = 42; 43 err = Err(); 44 setup.scope()->GetMutableValue("a", false)->scope_value()->SetValue( 45 "b", Value(NULL, kBValue), NULL); 46 result = accessor.Execute(setup.scope(), &err); 47 EXPECT_FALSE(err.has_error()); 48 ASSERT_EQ(Value::INTEGER, result.type()); 49 EXPECT_EQ(kBValue, result.int_value()); 50 } 51 52 TEST(ParseTree, BlockUnusedVars) { 53 TestWithScope setup; 54 55 // Printing both values should be OK. 56 TestParseInput input_all_used( 57 "{\n" 58 " a = 12\n" 59 " b = 13\n" 60 " print(\"$a $b\")\n" 61 "}"); 62 EXPECT_FALSE(input_all_used.has_error()); 63 64 Err err; 65 input_all_used.parsed()->Execute(setup.scope(), &err); 66 EXPECT_FALSE(err.has_error()); 67 68 // Skipping one should throw an unused var error. 69 TestParseInput input_unused( 70 "{\n" 71 " a = 12\n" 72 " b = 13\n" 73 " print(\"$a\")\n" 74 "}"); 75 EXPECT_FALSE(input_unused.has_error()); 76 77 input_unused.parsed()->Execute(setup.scope(), &err); 78 EXPECT_TRUE(err.has_error()); 79 80 // Also verify that the unused variable has the correct origin set. The 81 // origin will point to the value assigned to the variable (in this case, the 82 // "13" assigned to "b". 83 EXPECT_EQ(3, err.location().line_number()); 84 EXPECT_EQ(7, err.location().char_offset()); 85 86 } 87 88 TEST(ParseTree, OriginForDereference) { 89 TestWithScope setup; 90 TestParseInput input( 91 "a = 6\n" 92 "get_target_outputs(a)"); 93 EXPECT_FALSE(input.has_error()); 94 95 Err err; 96 input.parsed()->Execute(setup.scope(), &err); 97 EXPECT_TRUE(err.has_error()); 98 99 // The origin for the "not a string" error message should be where the value 100 // was dereferenced (the "a" on the second line). 101 EXPECT_EQ(2, err.location().line_number()); 102 EXPECT_EQ(20, err.location().char_offset()); 103 } 104
