/
no-fallthrough.js
302 lines (295 loc) · 10.5 KB
/
no-fallthrough.js
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/**
* @fileoverview Tests for no-fallthrough rule.
* @author Matt DuVall<http://mattduvall.com/>
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-fallthrough"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const errorsDefault = [{
messageId: "default",
type: "SwitchCase"
}];
const ruleTester = new RuleTester();
ruleTester.run("no-fallthrough", rule, {
valid: [
"switch(foo) { case 0: a(); /* falls through */ case 1: b(); }",
"switch(foo) { case 0: a()\n /* falls through */ case 1: b(); }",
"switch(foo) { case 0: a(); /* fall through */ case 1: b(); }",
"switch(foo) { case 0: a(); /* fallthrough */ case 1: b(); }",
"switch(foo) { case 0: a(); /* FALLS THROUGH */ case 1: b(); }",
"switch(foo) { case 0: { a(); /* falls through */ } case 1: b(); }",
"switch(foo) { case 0: { a()\n /* falls through */ } case 1: b(); }",
"switch(foo) { case 0: { a(); /* fall through */ } case 1: b(); }",
"switch(foo) { case 0: { a(); /* fallthrough */ } case 1: b(); }",
"switch(foo) { case 0: { a(); /* FALLS THROUGH */ } case 1: b(); }",
"switch(foo) { case 0: { a(); } /* falls through */ case 1: b(); }",
"switch(foo) { case 0: { a(); /* falls through */ } /* comment */ case 1: b(); }",
"switch(foo) { case 0: { /* falls through */ } case 1: b(); }",
"function foo() { switch(foo) { case 0: a(); return; case 1: b(); }; }",
"switch(foo) { case 0: a(); throw 'foo'; case 1: b(); }",
"while (a) { switch(foo) { case 0: a(); continue; case 1: b(); } }",
"switch(foo) { case 0: a(); break; case 1: b(); }",
"switch(foo) { case 0: case 1: a(); break; case 2: b(); }",
"switch(foo) { case 0: case 1: break; case 2: b(); }",
"switch(foo) { case 0: case 1: break; default: b(); }",
"switch(foo) { case 0: case 1: a(); }",
"switch(foo) { case 0: case 1: a(); break; }",
"switch(foo) { case 0: case 1: break; }",
"switch(foo) { case 0:\n case 1: break; }",
"switch(foo) { case 0: // comment\n case 1: break; }",
"function foo() { switch(foo) { case 0: case 1: return; } }",
"function foo() { switch(foo) { case 0: {return;}\n case 1: {return;} } }",
"switch(foo) { case 0: case 1: {break;} }",
"switch(foo) { }",
"switch(foo) { case 0: switch(bar) { case 2: break; } /* falls through */ case 1: break; }",
"function foo() { switch(foo) { case 1: return a; a++; }}",
"switch (foo) { case 0: a(); /* falls through */ default: b(); /* comment */ }",
"switch (foo) { case 0: a(); /* falls through */ default: /* comment */ b(); }",
"switch (foo) { case 0: if (a) { break; } else { throw 0; } default: b(); }",
"switch (foo) { case 0: try { break; } finally {} default: b(); }",
"switch (foo) { case 0: try {} finally { break; } default: b(); }",
"switch (foo) { case 0: try { throw 0; } catch (err) { break; } default: b(); }",
"switch (foo) { case 0: do { throw 0; } while(a); default: b(); }",
{
code: "switch(foo) { case 0: a(); /* no break */ case 1: b(); }",
options: [{
commentPattern: "no break"
}]
},
{
code: "switch(foo) { case 0: a(); /* no break: need to execute b() */ case 1: b(); }",
options: [{
commentPattern: "no break:\\s?\\w+"
}]
},
{
code: "switch(foo) { case 0: a();\n// need to execute b(), so\n// falling through\n case 1: b(); }",
options: [{
commentPattern: "falling through"
}]
},
{
code: "switch(foo) { case 0: a(); /* break omitted */ default: b(); /* comment */ }",
options: [{
commentPattern: "break omitted"
}]
},
{
code: "switch(foo) { case 0: a(); /* caution: break is omitted intentionally */ case 1: b(); /* break omitted */ default: c(); }",
options: [{
commentPattern: "break[\\s\\w]+omitted"
}]
},
{
code: "switch(foo) { case 0: \n\n\n case 1: b(); }",
options: [{ allowEmptyCase: true }]
},
{
code: "switch(foo) { case 0: \n /* with comments */ \n case 1: b(); }",
options: [{ allowEmptyCase: true }]
},
{
code: "switch (a) {\n case 1: ; break; \n case 3: }",
options: [{ allowEmptyCase: true }]
},
{
code: "switch (a) {\n case 1: ; break; \n case 3: }",
options: [{ allowEmptyCase: false }]
}
],
invalid: [
{
code: "switch(foo) { case 0: a();\ncase 1: b() }",
errors: [
{
messageId: "case",
type: "SwitchCase",
line: 2,
column: 1
}
]
},
{
code: "switch(foo) { case 0: a();\ndefault: b() }",
errors: [
{
messageId: "default",
type: "SwitchCase",
line: 2,
column: 1
}
]
},
{
code: "switch(foo) { case 0: a(); default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: if (a) { break; } default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: try { throw 0; } catch (err) {} default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: while (a) { break; } default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: do { break; } while (a); default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0:\n\n default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: {} default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: a(); { /* falls through */ } default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: { /* falls through */ } a(); default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: if (a) { /* falls through */ } default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: { { /* falls through */ } } default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: { /* comment */ } default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0:\n // comment\n default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: a(); /* falling through */ default: b() }",
errors: errorsDefault
},
{
code: "switch(foo) { case 0: a();\n/* no break */\ncase 1: b(); }",
options: [{
commentPattern: "break omitted"
}],
errors: [
{
messageId: "case",
type: "SwitchCase",
line: 3,
column: 1
}
]
},
{
code: "switch(foo) { case 0: a();\n/* no break */\n/* todo: fix readability */\ndefault: b() }",
options: [{
commentPattern: "no break"
}],
errors: [
{
messageId: "default",
type: "SwitchCase",
line: 4,
column: 1
}
]
},
{
code: "switch(foo) { case 0: { a();\n/* no break */\n/* todo: fix readability */ }\ndefault: b() }",
options: [{
commentPattern: "no break"
}],
errors: [
{
messageId: "default",
type: "SwitchCase",
line: 4,
column: 1
}
]
},
{
code: "switch(foo) { case 0: \n /* with comments */ \ncase 1: b(); }",
errors: [
{
messageId: "case",
type: "SwitchCase",
line: 3,
column: 1
}
]
},
{
code: "switch(foo) { case 0:\n\ncase 1: b(); }",
options: [{
allowEmptyCase: false
}],
errors: [
{
messageId: "case",
type: "SwitchCase",
line: 3,
column: 1
}
]
},
{
code: "switch(foo) { case 0:\n\ncase 1: b(); }",
options: [{}],
errors: [
{
messageId: "case",
type: "SwitchCase",
line: 3,
column: 1
}
]
},
{
code: "switch (a) { case 1: \n ; case 2: }",
options: [{ allowEmptyCase: false }],
errors: [
{
messageId: "case",
type: "SwitchCase",
line: 2,
column: 4
}
]
},
{
code: "switch (a) { case 1: ; case 2: ; case 3: }",
options: [{ allowEmptyCase: true }],
errors: [
{
messageId: "case",
type: "SwitchCase",
line: 1,
column: 24
},
{
messageId: "case",
type: "SwitchCase",
line: 1,
column: 34
}
]
}
]
});