/
no-empty.js
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/
no-empty.js
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/**
* @fileoverview Tests for no-empty rule.
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-empty"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("no-empty", rule, {
valid: [
"if (foo) { bar() }",
"while (foo) { bar() }",
"for (;foo;) { bar() }",
"try { foo() } catch (ex) { foo() }",
"switch(foo) {case 'foo': break;}",
"(function() { }())",
{ code: "var foo = () => {};", parserOptions: { ecmaVersion: 6 } },
"function foo() { }",
"if (foo) {/* empty */}",
"while (foo) {/* empty */}",
"for (;foo;) {/* empty */}",
"try { foo() } catch (ex) {/* empty */}",
"try { foo() } catch (ex) {// empty\n}",
"try { foo() } finally {// empty\n}",
"try { foo() } finally {// test\n}",
"try { foo() } finally {\n \n // hi i am off no use\n}",
"try { foo() } catch (ex) {/* test111 */}",
"if (foo) { bar() } else { // nothing in me \n}",
"if (foo) { bar() } else { /**/ \n}",
"if (foo) { bar() } else { // \n}",
{ code: "try { foo(); } catch (ex) {}", options: [{ allowEmptyCatch: true }] },
{ code: "try { foo(); } catch (ex) {} finally { bar(); }", options: [{ allowEmptyCatch: true }] }
],
invalid: [
{
code: "try {} catch (ex) {throw ex}",
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "try { /* empty */ } catch (ex) {throw ex}"
}]
}]
},
{
code: "try { foo() } catch (ex) {}",
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "try { foo() } catch (ex) { /* empty */ }"
}]
}]
},
{
code: "try { foo() } catch (ex) {throw ex} finally {}",
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "try { foo() } catch (ex) {throw ex} finally { /* empty */ }"
}]
}]
},
{
code: "if (foo) {}",
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "if (foo) { /* empty */ }"
}]
}]
},
{
code: "while (foo) {}",
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "while (foo) { /* empty */ }"
}]
}]
},
{
code: "for (;foo;) {}",
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "for (;foo;) { /* empty */ }"
}]
}]
},
{
code: "switch(foo) {}",
errors: [{
messageId: "unexpected",
data: { type: "switch" },
type: "SwitchStatement"
}]
},
{
code: "switch (foo) { /* empty */ }",
errors: [{
messageId: "unexpected",
data: { type: "switch" },
type: "SwitchStatement",
suggestions: null
}]
},
{
code: "try {} catch (ex) {}",
options: [{ allowEmptyCatch: true }],
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "try { /* empty */ } catch (ex) {}"
}]
}]
},
{
code: "try { foo(); } catch (ex) {} finally {}",
options: [{ allowEmptyCatch: true }],
errors: [{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [{
messageId: "suggestComment",
data: { type: "block" },
output: "try { foo(); } catch (ex) {} finally { /* empty */ }"
}]
}]
},
{
code: "try {} catch (ex) {} finally {}",
options: [{ allowEmptyCatch: true }],
errors: [
{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [
{
messageId: "suggestComment",
data: { type: "block" },
output: "try { /* empty */ } catch (ex) {} finally {}"
}
]
},
{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [
{
messageId: "suggestComment",
data: { type: "block" },
output: "try {} catch (ex) {} finally { /* empty */ }"
}
]
}
]
},
{
code: "try { foo(); } catch (ex) {} finally {}",
errors: [
{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [
{
messageId: "suggestComment",
data: { type: "block" },
output: "try { foo(); } catch (ex) { /* empty */ } finally {}"
}
]
},
{
messageId: "unexpected",
data: { type: "block" },
type: "BlockStatement",
suggestions: [
{
messageId: "suggestComment",
data: { type: "block" },
output: "try { foo(); } catch (ex) {} finally { /* empty */ }"
}
]
}
]
}
]
});