1 // Copyright 2020 The Tint Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "src/ast/fallthrough_statement.h"
16 #include "src/reader/wgsl/parser_impl_test_helper.h"
17
18 namespace tint {
19 namespace reader {
20 namespace wgsl {
21 namespace {
22
TEST_F(ParserImplTest,CaseBody_Empty)23 TEST_F(ParserImplTest, CaseBody_Empty) {
24 auto p = parser("");
25 auto e = p->case_body();
26 ASSERT_FALSE(p->has_error()) << p->error();
27 EXPECT_FALSE(e.errored);
28 EXPECT_TRUE(e.matched);
29 EXPECT_EQ(e->statements.size(), 0u);
30 }
31
TEST_F(ParserImplTest,CaseBody_Statements)32 TEST_F(ParserImplTest, CaseBody_Statements) {
33 auto p = parser(R"(
34 var a: i32;
35 a = 2;)");
36
37 auto e = p->case_body();
38 ASSERT_FALSE(p->has_error()) << p->error();
39 EXPECT_FALSE(e.errored);
40 EXPECT_TRUE(e.matched);
41 ASSERT_EQ(e->statements.size(), 2u);
42 EXPECT_TRUE(e->statements[0]->Is<ast::VariableDeclStatement>());
43 EXPECT_TRUE(e->statements[1]->Is<ast::AssignmentStatement>());
44 }
45
TEST_F(ParserImplTest,CaseBody_InvalidStatement)46 TEST_F(ParserImplTest, CaseBody_InvalidStatement) {
47 auto p = parser("a =");
48 auto e = p->case_body();
49 EXPECT_TRUE(p->has_error());
50 EXPECT_TRUE(e.errored);
51 EXPECT_FALSE(e.matched);
52 EXPECT_EQ(e.value, nullptr);
53 }
54
TEST_F(ParserImplTest,CaseBody_Fallthrough)55 TEST_F(ParserImplTest, CaseBody_Fallthrough) {
56 auto p = parser("fallthrough;");
57 auto e = p->case_body();
58 ASSERT_FALSE(p->has_error()) << p->error();
59 EXPECT_FALSE(e.errored);
60 EXPECT_TRUE(e.matched);
61 ASSERT_EQ(e->statements.size(), 1u);
62 EXPECT_TRUE(e->statements[0]->Is<ast::FallthroughStatement>());
63 }
64
TEST_F(ParserImplTest,CaseBody_Fallthrough_MissingSemicolon)65 TEST_F(ParserImplTest, CaseBody_Fallthrough_MissingSemicolon) {
66 auto p = parser("fallthrough");
67 auto e = p->case_body();
68 EXPECT_TRUE(p->has_error());
69 EXPECT_TRUE(e.errored);
70 EXPECT_FALSE(e.matched);
71 EXPECT_EQ(e.value, nullptr);
72 EXPECT_EQ(p->error(), "1:12: expected ';' for fallthrough statement");
73 }
74
75 } // namespace
76 } // namespace wgsl
77 } // namespace reader
78 } // namespace tint
79