eslint/tests/lib/rules/newline-per-chained-call.js

   1 /**
   2  * @fileoverview Tests for newline-per-chained-call rule.
   3  * @author Rajendra Patil
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/newline-per-chained-call"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 const ruleTester = new RuleTester();
  16
  17 ruleTester.run("newline-per-chained-call", rule, {
  18     valid: ["_\n.chain({})\n.map(foo)\n.filter(bar)\n.value();", "a.b.c.d.e.f", "a()\n.b()\n.c\n.e", "var a = m1.m2(); var b = m1.m2();\nvar c = m1.m2()", "var a = m1()\n.m2();", "var a = m1();", "a()\n.b().c.e.d()", "a().b().c.e.d()", "a.b.c.e.d()", "var a = window\n.location\n.href\n.match(/(^[^#]*)/)[0];", "var a = window['location']\n.href\n.match(/(^[^#]*)/)[0];", "var a = window['location'].href.match(/(^[^#]*)/)[0];", {
  19         code: "var a = m1().m2.m3();",
  20         options: [{
  21             ignoreChainWithDepth: 3
  22         }]
  23     }, {
  24         code: "var a = m1().m2.m3().m4.m5().m6.m7().m8;",
  25         options: [{
  26             ignoreChainWithDepth: 8
  27         }]
  28     }],
  29     invalid: [{
  30         code: "_\n.chain({}).map(foo).filter(bar).value();",
  31         output: "_\n.chain({}).map(foo)\n.filter(bar)\n.value();",
  32         errors: [{
  33             messageId: "expected", data: { callee: ".filter" }
  34         }, {
  35             messageId: "expected", data: { callee: ".value" }
  36         }]
  37     }, {
  38         code: "_\n.chain({})\n.map(foo)\n.filter(bar).value();",
  39         output: "_\n.chain({})\n.map(foo)\n.filter(bar)\n.value();",
  40         errors: [{
  41             messageId: "expected", data: { callee: ".value" }
  42         }]
  43     }, {
  44         code: "a().b().c().e.d()",
  45         output: "a().b()\n.c().e.d()",
  46         errors: [{
  47             messageId: "expected", data: { callee: ".c" }
  48         }]
  49     }, {
  50         code: "a.b.c().e().d()",
  51         output: "a.b.c().e()\n.d()",
  52         errors: [{
  53             messageId: "expected", data: { callee: ".d" }
  54         }]
  55     }, {
  56         code: "_.chain({}).map(a).value(); ",
  57         output: "_.chain({}).map(a)\n.value(); ",
  58         errors: [{
  59             messageId: "expected", data: { callee: ".value" }
  60         }]
  61     }, {
  62         code: "var a = m1.m2();\n var b = m1.m2().m3().m4().m5();",
  63         output: "var a = m1.m2();\n var b = m1.m2().m3()\n.m4()\n.m5();",
  64         errors: [{
  65             messageId: "expected", data: { callee: ".m4" }
  66         }, {
  67             messageId: "expected", data: { callee: ".m5" }
  68         }]
  69     }, {
  70         code: "var a = m1.m2();\n var b = m1.m2().m3()\n.m4().m5();",
  71         output: "var a = m1.m2();\n var b = m1.m2().m3()\n.m4()\n.m5();",
  72         errors: [{
  73             messageId: "expected", data: { callee: ".m5" }
  74         }]
  75     }, {
  76         code: "var a = m1().m2\n.m3().m4().m5().m6().m7();",
  77         output: "var a = m1().m2\n.m3().m4().m5()\n.m6()\n.m7();",
  78         options: [{
  79             ignoreChainWithDepth: 3
  80         }],
  81         errors: [{
  82             messageId: "expected", data: { callee: ".m6" }
  83         }, {
  84             messageId: "expected", data: { callee: ".m7" }
  85         }]
  86     }, {
  87         code: [
  88             "http.request({",
  89             "    // Param",
  90             "    // Param",
  91             "    // Param",
  92             "}).on('response', function(response) {",
  93             "    // Do something with response.",
  94             "    // Do something with response.",
  95             "    // Do something with response.",
  96             "    // Do something with response.",
  97             "    // Do something with response.",
  98             "    // Do something with response.",
  99             "    // Do something with response.",
 100             "    // Do something with response.",
 101             "    // Do something with response.",
 102             "    // Do something with response.",
 103             "}).on('error', function(error) {",
 104             "    // Do something with error.",
 105             "    // Do something with error.",
 106             "    // Do something with error.",
 107             "    // Do something with error.",
 108             "    // Do something with error.",
 109             "    // Do something with error.",
 110             "    // Do something with error.",
 111             "    // Do something with error.",
 112             "    // Do something with error.",
 113             "    // Do something with error.",
 114             "}).end();"
 115         ].join("\n"),
 116         output: [
 117             "http.request({",
 118             "    // Param",
 119             "    // Param",
 120             "    // Param",
 121             "}).on('response', function(response) {",
 122             "    // Do something with response.",
 123             "    // Do something with response.",
 124             "    // Do something with response.",
 125             "    // Do something with response.",
 126             "    // Do something with response.",
 127             "    // Do something with response.",
 128             "    // Do something with response.",
 129             "    // Do something with response.",
 130             "    // Do something with response.",
 131             "    // Do something with response.",
 132             "})",
 133             ".on('error', function(error) {",
 134             "    // Do something with error.",
 135             "    // Do something with error.",
 136             "    // Do something with error.",
 137             "    // Do something with error.",
 138             "    // Do something with error.",
 139             "    // Do something with error.",
 140             "    // Do something with error.",
 141             "    // Do something with error.",
 142             "    // Do something with error.",
 143             "    // Do something with error.",
 144             "})",
 145             ".end();"
 146         ].join("\n"),
 147         errors: [{
 148             messageId: "expected", data: { callee: ".on" }
 149         }, {
 150             messageId: "expected", data: { callee: ".end" }
 151         }]
 152     }, {
 153         code: [
 154             "anObject.method1().method2()['method' + n]()[aCondition ?",
 155             "    'method3' :",
 156             "    'method4']()"
 157         ].join("\n"),
 158         output: [
 159             "anObject.method1().method2()",
 160             "['method' + n]()",
 161             "[aCondition ?",
 162             "    'method3' :",
 163             "    'method4']()"
 164         ].join("\n"),
 165         errors: [{
 166             messageId: "expected", data: { callee: "['method' + n]" }
 167         }, {
 168             messageId: "expected", data: { callee: "[aCondition ?" }
 169         }]
 170     }, {
 171         code: "foo.bar()['foo' + \u2029 + 'bar']()",
 172         output: "foo.bar()\n['foo' + \u2029 + 'bar']()",
 173         options: [{ ignoreChainWithDepth: 1 }],
 174         errors: [{ messageId: "expected", data: { callee: "['foo' + " } }]
 175     }, {
 176         code: "foo.bar()[(biz)]()",
 177         output: "foo.bar()\n[(biz)]()",
 178         options: [{ ignoreChainWithDepth: 1 }],
 179         errors: [{ messageId: "expected", data: { callee: "[biz]" } }]
 180     }, {
 181         code: "(foo).bar().biz()",
 182         output: "(foo).bar()\n.biz()",
 183         options: [{ ignoreChainWithDepth: 1 }],
 184         errors: [{ messageId: "expected", data: { callee: ".biz" } }]
 185     }, {
 186         code: "foo.bar(). /* comment */ biz()",
 187         output: "foo.bar()\n. /* comment */ biz()",
 188         options: [{ ignoreChainWithDepth: 1 }],
 189         errors: [{ messageId: "expected", data: { callee: ".biz" } }]
 190     }, {
 191         code: "foo.bar() /* comment */ .biz()",
 192         output: "foo.bar() /* comment */ \n.biz()",
 193         options: [{ ignoreChainWithDepth: 1 }],
 194         errors: [{ messageId: "expected", data: { callee: ".biz" } }]
 195     }]
 196 });