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|
Testing utpl switch statements.
1. Ensure that execution starts at the first matching case.
-- Expect stdout --
1a
-- End --
-- Testcase --
{%
switch (1) {
case 1:
print("1a\n");
break;
case 1:
print("1b\n");
break;
case 2:
print("2\n");
break;
}
%}
-- End --
2. Ensure that default case is only used if no case matches,
even if declared first.
-- Expect stdout --
1
default
-- End --
-- Testcase --
{%
for (n in [1, 3]) {
switch (n) {
default:
print("default\n");
break;
case 1:
print("1\n");
break;
case 2:
print("2\n");
break;
}
}
%}
-- End --
3. Ensure that cases without break fall through into
subsequent cases.
-- Expect stdout --
1
2
default
1
2
-- End --
-- Testcase --
{%
for (n in [1, 3]) {
switch (n) {
default:
print("default\n");
case 1:
print("1\n");
case 2:
print("2\n");
}
}
%}
-- End --
4. Ensure that duplicate default cases emit a syntax
error during parsing.
-- Expect stderr --
Syntax error: more than one switch default case
In line 6, byte 9:
` default:`
Near here -----^
-- End --
-- Testcase --
{%
switch (1) {
default:
print("default1\n");
default:
print("default2\n");
}
%}
-- End --
5. Ensure that case values use strict comparison.
-- Expect stdout --
b
b
-- End --
-- Testcase --
{%
switch (1.0) {
case 1:
print("a\n");
break;
case 1.0:
print("b\n");
break;
}
switch ("123") {
case 123:
print("a\n");
break;
case "123":
print("b\n");
break;
}
%}
-- End --
6. Ensure that case values may be complex expressions.
-- Expect stdout --
2, 3, 1
-- End --
-- Testcase --
{%
switch (1) {
case a = 2, b = 3, c = 1:
print(join(", ", [ a, b, c ]), "\n");
break;
}
%}
-- End --
7. Ensure that empty switch statements are accepted by the
parser and that the test expression is evaluated.
-- Expect stdout --
true
-- End --
-- Testcase --
{%
x = false;
switch (x = true) {
}
print(x, "\n");
%}
-- End --
|
