eslint/tests/lib/rules/no-unsafe-finally.js

   1 /**
   2  * @fileoverview Tests for no-unsafe-finally
   3  * @author Onur Temizkan
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/no-unsafe-finally"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 //------------------------------------------------------------------------------
  16 // Tests
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester();
  20
  21 ruleTester.run("no-unsafe-finally", rule, {
  22     valid: [
  23         "var foo = function() {\n try { \n return 1; \n } catch(err) { \n return 2; \n } finally { \n console.log('hola!') \n } \n }",
  24         "var foo = function() { try { return 1 } catch(err) { return 2 } finally { console.log('hola!') } }",
  25         "var foo = function() { try { return 1 } catch(err) { return 2 } finally { function a(x) { return x } } }",
  26         "var foo = function() { try { return 1 } catch(err) { return 2 } finally { var a = function(x) { if(!x) { throw new Error() } } } }",
  27         "var foo = function() { try { return 1 } catch(err) { return 2 } finally { var a = function(x) { while(true) { if(x) { break } else { continue } } } } }",
  28         "var foo = function() { try { return 1 } catch(err) { return 2 } finally { var a = function(x) { label: while(true) { if(x) { break label; } else { continue } } } } }",
  29         "var foo = function() { try {} finally { while (true) break; } }",
  30         "var foo = function() { try {} finally { while (true) continue; } }",
  31         "var foo = function() { try {} finally { switch (true) { case true: break; } } }",
  32         "var foo = function() { try {} finally { do { break; } while (true) } }",
  33         {
  34             code: "var foo = function() { try { return 1; } catch(err) { return 2; } finally { var bar = () => { throw new Error(); }; } };",
  35             parserOptions: { ecmaVersion: 6 }
  36         },
  37         {
  38             code: "var foo = function() { try { return 1; } catch(err) { return 2 } finally { (x) => x } }",
  39             parserOptions: { ecmaVersion: 6 }
  40         },
  41         {
  42             code: "var foo = function() { try { return 1; } finally { class bar { constructor() {} static ehm() { return 'Hola!'; } } } };",
  43             parserOptions: { ecmaVersion: 6 }
  44         }
  45     ],
  46     invalid: [
  47         {
  48             code: "var foo = function() { \n try { \n return 1; \n } catch(err) { \n return 2; \n } finally { \n return 3; \n } \n }",
  49             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ReturnStatement" }, type: "ReturnStatement", line: 7, column: 2 }]
  50         },
  51         {
  52             code: "var foo = function() { try { return 1 } catch(err) { return 2 } finally { if(true) { return 3 } else { return 2 } } }",
  53             errors: [
  54                 { messageId: "unsafeUsage", data: { nodeType: "ReturnStatement" }, type: "ReturnStatement", line: 1, column: 86 },
  55                 { messageId: "unsafeUsage", data: { nodeType: "ReturnStatement" }, type: "ReturnStatement", line: 1, column: 104 }
  56             ]
  57         },
  58         {
  59             code: "var foo = function() { try { return 1 } catch(err) { return 2 } finally { return 3 } }",
  60             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ReturnStatement" }, type: "ReturnStatement", line: 1, column: 75 }]
  61         },
  62         {
  63             code: "var foo = function() { try { return 1 } catch(err) { return 2 } finally { return function(x) { return y } } }",
  64             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ReturnStatement" }, type: "ReturnStatement", line: 1, column: 75 }]
  65         },
  66         {
  67             code: "var foo = function() { try { return 1 } catch(err) { return 2 } finally { return { x: function(c) { return c } } } }",
  68             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ReturnStatement" }, type: "ReturnStatement", line: 1, column: 75 }]
  69         },
  70         {
  71             code: "var foo = function() { try { return 1 } catch(err) { return 2 } finally { throw new Error() } }",
  72             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ThrowStatement" }, type: "ThrowStatement", line: 1, column: 75 }]
  73         },
  74         {
  75             code: "var foo = function() { try { foo(); } finally { try { bar(); } finally { return; } } };",
  76             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ReturnStatement" }, type: "ReturnStatement", line: 1, column: 74 }]
  77         },
  78         {
  79             code: "var foo = function() { label: try { return 0; } finally { break label; } return 1; }",
  80             errors: [{ messageId: "unsafeUsage", data: { nodeType: "BreakStatement" }, type: "BreakStatement", line: 1, column: 59 }]
  81         },
  82         {
  83             code: "var foo = function() { \n a: try { \n return 1; \n } catch(err) { \n return 2; \n } finally { \n break a; \n } \n }",
  84             errors: [{ messageId: "unsafeUsage", data: { nodeType: "BreakStatement" }, type: "BreakStatement", line: 7, column: 2 }]
  85         },
  86         {
  87             code: "var foo = function() { while (true) try {} finally { break; } }",
  88             errors: [{ messageId: "unsafeUsage", data: { nodeType: "BreakStatement" }, type: "BreakStatement", line: 1, column: 54 }]
  89         },
  90         {
  91             code: "var foo = function() { while (true) try {} finally { continue; } }",
  92             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ContinueStatement" }, type: "ContinueStatement", line: 1, column: 54 }]
  93         },
  94         {
  95             code: "var foo = function() { switch (true) { case true: try {} finally { break; } } }",
  96             errors: [{ messageId: "unsafeUsage", data: { nodeType: "BreakStatement" }, type: "BreakStatement", line: 1, column: 68 }]
  97         },
  98         {
  99             code: "var foo = function() { a: while (true) try {} finally { switch (true) { case true: break a; } } }",
 100             errors: [{ messageId: "unsafeUsage", data: { nodeType: "BreakStatement" }, type: "BreakStatement", line: 1, column: 84 }]
 101         },
 102         {
 103             code: "var foo = function() { a: while (true) try {} finally { switch (true) { case true: continue; } } }",
 104             errors: [{ messageId: "unsafeUsage", data: { nodeType: "ContinueStatement" }, type: "ContinueStatement", line: 1, column: 84 }]
 105         },
 106         {
 107             code: "var foo = function() { a: switch (true) { case true: try {} finally { switch (true) { case true: break a; } } } }",
 108             errors: [{ messageId: "unsafeUsage", data: { nodeType: "BreakStatement" }, type: "BreakStatement", line: 1, column: 98 }]
 109         }
 110     ]
 111 });