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Side by Side Diff: tests/language/switch_case_warn_test.dart

Issue 2765693002: Update all tests (Closed)
Patch Set: Created 3 years, 9 months ago
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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 // Test switch statement. 4 // Test switch statement.
5 5
6 // Tests some switch-case statements blocks that should and should not 6 // Tests some switch-case statements blocks that should and should not
7 // cause static warnings. 7 // cause static warnings.
8 // This test is not testing runtime behavior, only static warnings. 8 // This test is not testing runtime behavior, only static warnings.
9 9
10 // None of the cases blocks should cause a warning. 10 // None of the cases blocks should cause a warning.
(...skipping 16 matching lines...) Expand all
27 case 3: 27 case 3:
28 nop(x); 28 nop(x);
29 continue; // Continue loop. 29 continue; // Continue loop.
30 case 4: 30 case 4:
31 nop(x); 31 nop(x);
32 continue LOOP; 32 continue LOOP;
33 case 5: 33 case 5:
34 nop(x); 34 nop(x);
35 continue LAST; 35 continue LAST;
36 // Avoid warning for "return;"" and "return e;" in same function. 36 // Avoid warning for "return;"" and "return e;" in same function.
37 case 6: /// retnon: ok 37 case 6: //# retnon: ok
38 nop(x); /// retnon: continued 38 nop(x); //# retnon: continued
39 return; /// retnon: continued 39 return; //# retnon: continued
40 case 7: /// retval: ok 40 case 7: //# retval: ok
41 nop(x); /// retval: continued 41 nop(x); //# retval: continued
42 return x; /// retval: continued 42 return x; //# retval: continued
43 case 8: 43 case 8:
44 nop(x); 44 nop(x);
45 throw x; 45 throw x;
46 case 9: 46 case 9:
47 nop(x); 47 nop(x);
48 rethrow; 48 rethrow;
49 case 10: 49 case 10:
50 case 11: { 50 case 11: {
51 nop(x); 51 nop(x);
52 break; // Break switch. 52 break; // Break switch.
53 } 53 }
54 case 12: { 54 case 12: {
55 nop(x); 55 nop(x);
56 break LOOP; 56 break LOOP;
57 } 57 }
58 case 13: { 58 case 13: {
59 nop(x); 59 nop(x);
60 continue; // Continue loop. 60 continue; // Continue loop.
61 } 61 }
62 case 14: { 62 case 14: {
63 nop(x); 63 nop(x);
64 continue LOOP; 64 continue LOOP;
65 } 65 }
66 case 15: { 66 case 15: {
67 nop(x); 67 nop(x);
68 continue LAST; 68 continue LAST;
69 } 69 }
70 case 16: { /// retnon: continued 70 case 16: { //# retnon: continued
71 nop(x); /// retnon: continued 71 nop(x); //# retnon: continued
72 return; /// retnon: continued 72 return; //# retnon: continued
73 } /// retnon: continued 73 } //# retnon: continued
74 case 17: { /// retval: continued 74 case 17: { //# retval: continued
75 nop(x); /// retval: continued 75 nop(x); //# retval: continued
76 return x; /// retval: continued 76 return x; //# retval: continued
77 } /// retval: continued 77 } //# retval: continued
78 case 18: { 78 case 18: {
79 nop(x); 79 nop(x);
80 throw x; 80 throw x;
81 } 81 }
82 case 19: { 82 case 19: {
83 nop(x); 83 nop(x);
84 rethrow; 84 rethrow;
85 } 85 }
86 LAST: 86 LAST:
87 case 20: { 87 case 20: {
(...skipping 12 matching lines...) Expand all
100 100
101 // All these switch cases should cause warnings. 101 // All these switch cases should cause warnings.
102 void testSwitchWarn(x) { 102 void testSwitchWarn(x) {
103 // Catch all control flow from the switch and ignore it. 103 // Catch all control flow from the switch and ignore it.
104 TRY: try { 104 TRY: try {
105 throw 0; 105 throw 0;
106 } catch (e) { 106 } catch (e) {
107 // Wrap in loop as target for continue/break. 107 // Wrap in loop as target for continue/break.
108 LOOP: do { 108 LOOP: do {
109 switch (x) { 109 switch (x) {
110 case 0: /// 01: static type warning 110 case 0: //# 01: static type warning
111 case 1: { /// 01: continued 111 case 1: { //# 01: continued
112 { /// 01: continued 112 { //# 01: continued
113 nop(x); /// 01: continued 113 nop(x); //# 01: continued
114 break; // Break switch. /// 01: continued 114 break; // Break switch. //# 01: continued
115 } /// 01: continued 115 } //# 01: continued
116 } /// 01: continued 116 } //# 01: continued
117 case 2: { /// 02: static type warning 117 case 2: { //# 02: static type warning
118 { /// 02: continued 118 { //# 02: continued
119 nop(x); /// 02: continued 119 nop(x); //# 02: continued
120 break LOOP; /// 02: continued 120 break LOOP; //# 02: continued
121 } /// 02: continued 121 } //# 02: continued
122 } /// 02: continued 122 } //# 02: continued
123 case 3: { /// 03: static type warning 123 case 3: { //# 03: static type warning
124 { /// 03: continued 124 { //# 03: continued
125 nop(x); /// 03: continued 125 nop(x); //# 03: continued
126 continue; // Continue loop. /// 03: continued 126 continue; // Continue loop. //# 03: continued
127 } /// 03: continued 127 } //# 03: continued
128 } /// 03: continued 128 } //# 03: continued
129 case 4: { /// 04: static type warning 129 case 4: { //# 04: static type warning
130 { /// 04: continued 130 { //# 04: continued
131 nop(x); /// 04: continued 131 nop(x); //# 04: continued
132 continue LOOP; /// 04: continued 132 continue LOOP; //# 04: continued
133 } /// 04: continued 133 } //# 04: continued
134 } /// 04: continued 134 } //# 04: continued
135 case 5: { /// 05: static type warning 135 case 5: { //# 05: static type warning
136 { /// 05: continued 136 { //# 05: continued
137 nop(x); /// 05: continued 137 nop(x); //# 05: continued
138 continue LAST; /// 05: continued 138 continue LAST; //# 05: continued
139 } /// 05: continued 139 } //# 05: continued
140 } /// 05: continued 140 } //# 05: continued
141 case 6: { /// 06: static type warning 141 case 6: { //# 06: static type warning
142 { /// 06: continued 142 { //# 06: continued
143 nop(x); /// 06: continued 143 nop(x); //# 06: continued
144 return; /// 06: continued 144 return; //# 06: continued
145 } /// 06: continued 145 } //# 06: continued
146 } /// 06: continued 146 } //# 06: continued
147 case 7: { /// 07: static type warning 147 case 7: { //# 07: static type warning
148 { /// 07: continued 148 { //# 07: continued
149 nop(x); /// 07: continued 149 nop(x); //# 07: continued
150 return x; /// 07: continued 150 return x; //# 07: continued
151 } /// 07: continued 151 } //# 07: continued
152 } /// 07: continued 152 } //# 07: continued
153 case 8: { /// 08: static type warning 153 case 8: { //# 08: static type warning
154 { /// 08: continued 154 { //# 08: continued
155 nop(x); /// 08: continued 155 nop(x); //# 08: continued
156 throw x; /// 08: continued 156 throw x; //# 08: continued
157 } /// 08: continued 157 } //# 08: continued
158 } /// 08: continued 158 } //# 08: continued
159 case 9: { /// 09: static type warning 159 case 9: { //# 09: static type warning
160 { /// 09: continued 160 { //# 09: continued
161 nop(x); /// 09: continued 161 nop(x); //# 09: continued
162 rethrow; /// 09: continued 162 rethrow; //# 09: continued
163 } /// 09: continued 163 } //# 09: continued
164 } /// 09: continued 164 } //# 09: continued
165 case 10: /// 10: static type warning 165 case 10: //# 10: static type warning
166 while (true) break; /// 10: continued 166 while (true) break; //# 10: continued
167 case 11: /// 11: static type warning 167 case 11: //# 11: static type warning
168 do break; while (true); /// 11: continued 168 do break; while (true); //# 11: continued
169 case 12: /// 12: static type warning 169 case 12: //# 12: static type warning
170 for (;;) break; /// 12: continued 170 for (;;) break; //# 12: continued
171 case 13: /// 13: static type warning 171 case 13: //# 13: static type warning
172 for (var _ in []) break; /// 13: continued 172 for (var _ in []) break; //# 13: continued
173 case 14: /// 14: static type warning 173 case 14: //# 14: static type warning
174 if (x) break; else break; /// 14: continued 174 if (x) break; else break; //# 14: continued
175 case 15: /// 15: static type warning 175 case 15: //# 15: static type warning
176 (throw 0); /// 15: continued 176 (throw 0); //# 15: continued
177 case 16: /// 16: static type warning 177 case 16: //# 16: static type warning
178 nop(x); // fallthrough. /// 16: continued 178 nop(x); // fallthrough. //# 16: continued
179 case 17: /// 17: static type warning 179 case 17: //# 17: static type warning
180 L: break; /// 17: continued 180 L: break; //# 17: continued
181 LAST: 181 LAST:
182 case 99: 182 case 99:
183 // Last case can't cause static warning. 183 // Last case can't cause static warning.
184 } 184 }
185 } while (false); 185 } while (false);
186 } finally { 186 } finally {
187 // Catch all control flow leaving the switch and ignore it. 187 // Catch all control flow leaving the switch and ignore it.
188 // Use break instead of return to avoid warning for `return` and `return e` 188 // Use break instead of return to avoid warning for `return` and `return e`
189 // in same function. 189 // in same function.
190 break TRY; 190 break TRY;
191 } 191 }
192 } 192 }
193 193
194 main() { 194 main() {
195 // Ensure that all the cases compile and run (even if they might throw). 195 // Ensure that all the cases compile and run (even if they might throw).
196 for (int i = 0; i <= 20; i++) { 196 for (int i = 0; i <= 20; i++) {
197 testSwitch(i); // Just make sure it runs. 197 testSwitch(i); // Just make sure it runs.
198 } 198 }
199 for (int i = 0; i <= 18; i++) { 199 for (int i = 0; i <= 18; i++) {
200 testSwitchWarn(i); 200 testSwitchWarn(i);
201 } 201 }
202 } 202 }
203 203
204 /// Don't make it obvious that a switch case isn't doing anything. 204 /// Don't make it obvious that a switch case isn't doing anything.
205 void nop(x) {} 205 void nop(x) {}
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