add bug fix for multiple nested functions as params (#66882)

* add bug fix for multiple nested functions as params

* add types for parser (#67067)

* add types for parser

* add comment for future work

* handle any function with 2 seriesByTags func params, add test

.betterer.results

@@ -4294,13 +4294,7 @@ exports[`better eslint`] = {
     "public/app/plugins/datasource/graphite/parser.ts:5381": [
       [0, 0, 0, "Unexpected any. Specify a different type.", "0"],
       [0, 0, 0, "Unexpected any. Specify a different type.", "1"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "2"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "3"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "4"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "5"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "6"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "7"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "8"]
+      [0, 0, 0, "Unexpected any. Specify a different type.", "2"]
     ],
     "public/app/plugins/datasource/graphite/specs/graphite_query.test.ts:5381": [
       [0, 0, 0, "Unexpected any. Specify a different type.", "0"]

public/app/plugins/datasource/graphite/graphite_query.ts

@@ -6,7 +6,7 @@ import { arrayMove } from 'app/core/utils/arrayMove';
 
 import { GraphiteDatasource } from './datasource';
 import { FuncInstance } from './gfunc';
-import { Parser } from './parser';
+import { AstNode, Parser } from './parser';
 import { GraphiteSegment } from './types';
 
 export type GraphiteTagOperator = '=' | '=~' | '!=' | '!=~';
@@ -110,6 +110,10 @@ export default class GraphiteQuery {
         const innerFunc = this.datasource.createFuncInstance(astNode.name, {
           withDefaultParams: false,
         });
+
+        // bug fix for parsing multiple functions as params
+        handleMultipleSeriesByTagsParams(astNode);
+
         each(astNode.params, (param) => {
           this.parseTargetRecursive(param, innerFunc);
         });
@@ -326,3 +330,40 @@ export default class GraphiteQuery {
 function renderTagString(tag: { key: any; operator?: any; value?: any }) {
   return tag.key + tag.operator + tag.value;
 }
+
+/**
+ * mutates the second seriesByTag function into a string to fix a parsing bug
+ * @param astNode
+ * @param innerFunc
+ */
+function handleMultipleSeriesByTagsParams(astNode: AstNode) {
+  // if function has two params that are function seriesByTags keep the second as a string otherwise we have a parsing error
+  if (astNode.params && astNode.params.length >= 2) {
+    let count = 0;
+    astNode.params = astNode.params.map((p: AstNode) => {
+      if (p.type === 'function') {
+        count += 1;
+      }
+
+      if (count === 2 && p.type === 'function' && p.name === 'seriesByTag') {
+        // convert second function to a string
+        const stringParams =
+          p.params &&
+          p.params.reduce((acc: string, p: AstNode, idx: number, paramsArr: AstNode[]) => {
+            if (idx === 0 || idx !== paramsArr.length - 1) {
+              return `${acc}'${p.value}',`;
+            }
+
+            return `${acc}'${p.value}'`;
+          }, '');
+
+        return {
+          type: 'string',
+          value: `${p.name}(${stringParams})`,
+        };
+      }
+
+      return p;
+    });
+  }
+}

public/app/plugins/datasource/graphite/parser.ts

@@ -3,12 +3,12 @@ import { GraphiteParserError } from './types';
 import { isGraphiteParserError } from './utils';
 
 export class Parser {
-  expression: any;
+  expression: string;
   lexer: Lexer;
-  tokens: any;
+  tokens: AstNode[];
   index: number;
 
-  constructor(expression: any) {
+  constructor(expression: string) {
     this.expression = expression;
     this.lexer = new Lexer(expression);
     this.tokens = this.lexer.tokenize();
@@ -19,7 +19,7 @@ export class Parser {
     return this.start();
   }
 
-  start() {
+  start(): AstNode | null {
     try {
       return this.functionCall() || this.metricExpression();
     } catch (e) {
@@ -31,9 +31,10 @@ export class Parser {
         };
       }
     }
+    return null;
   }
 
-  curlyBraceSegment() {
+  curlyBraceSegment(): AstNode | null {
     if (this.match('identifier', '{') || this.match('{')) {
       let curlySegment = '';
 
@@ -62,7 +63,7 @@ export class Parser {
     }
   }
 
-  metricSegment() {
+  metricSegment(): AstNode | null {
     const curly = this.curlyBraceSegment();
     if (curly) {
       return curly;
@@ -70,7 +71,8 @@ export class Parser {
 
     if (this.match('identifier') || this.match('number') || this.match('bool')) {
       // hack to handle float numbers in metric segments
-      const parts = this.consumeToken().value.split('.');
+      const tokenValue = this.consumeToken().value;
+      const parts = tokenValue && typeof tokenValue === 'string' ? tokenValue.split('.') : '';
       if (parts.length === 2) {
         this.tokens.splice(this.index, 0, { type: '.' });
         this.tokens.splice(this.index + 1, 0, {
@@ -108,17 +110,21 @@ export class Parser {
     return node;
   }
 
-  metricExpression() {
+  metricExpression(): AstNode | null {
     if (!this.match('templateStart') && !this.match('identifier') && !this.match('number') && !this.match('{')) {
       return null;
     }
 
-    const node: any = {
+    const node: AstNode = {
       type: 'metric',
       segments: [],
     };
 
-    node.segments.push(this.metricSegment());
+    const segments = this.metricSegment();
+
+    if (node.segments && segments) {
+      node.segments.push(segments);
+    }
 
     while (this.match('.')) {
       this.consumeToken();
@@ -127,21 +133,28 @@ export class Parser {
       if (!segment) {
         this.errorMark('Expected metric identifier');
       }
-
-      node.segments.push(segment);
+      if (node.segments && segment) {
+        node.segments.push(segment);
+      }
     }
 
     return node;
   }
 
-  functionCall() {
+  functionCall(): AstNode | null {
     if (!this.match('identifier', '(')) {
       return null;
     }
 
-    const node: any = {
+    let name = '';
+    const token = this.consumeToken();
+    if (typeof token.value === 'string') {
+      name = token.value;
+    }
+
+    const node: AstNode = {
       type: 'function',
-      name: this.consumeToken().value,
+      name: name,
     };
 
     // consume left parenthesis
@@ -158,7 +171,7 @@ export class Parser {
     return node;
   }
 
-  boolExpression() {
+  boolExpression(): AstNode | null {
     if (!this.match('bool')) {
       return null;
     }
@@ -169,7 +182,7 @@ export class Parser {
     };
   }
 
-  functionParameters(): any {
+  functionParameters(): AstNode[] | [] {
     if (this.match(')') || this.match('')) {
       return [];
     }
@@ -182,21 +195,25 @@ export class Parser {
       this.metricExpression() ||
       this.stringLiteral();
 
-    if (!this.match(',')) {
+    if (!this.match(',') && param) {
       return [param];
     }
 
     this.consumeToken();
-    return [param].concat(this.functionParameters());
+
+    if (param) {
+      return [param].concat(this.functionParameters());
+    }
+    return [];
   }
 
-  seriesRefExpression() {
+  seriesRefExpression(): AstNode | null {
     if (!this.match('identifier')) {
       return null;
     }
 
     const value = this.tokens[this.index].value;
-    if (!value.match(/\#[A-Z]/)) {
+    if (value && typeof value === 'string' && !value.match(/\#[A-Z]/)) {
       return null;
     }
 
@@ -208,24 +225,28 @@ export class Parser {
     };
   }
 
-  numericLiteral() {
+  numericLiteral(): AstNode | null {
     if (!this.match('number')) {
       return null;
     }
 
-    return {
-      type: 'number',
-      value: parseFloat(this.consumeToken().value),
-    };
+    const token = this.consumeToken();
+    if (token && token.value && typeof token.value === 'string') {
+      return {
+        type: 'number',
+        value: parseFloat(token.value),
+      };
+    }
+    return null;
   }
 
-  stringLiteral() {
+  stringLiteral(): AstNode | null {
     if (!this.match('string')) {
       return null;
     }
 
     const token = this.consumeToken();
-    if (token.isUnclosed) {
+    if (token.isUnclosed && token.pos) {
       const error: GraphiteParserError = {
         message: 'Unclosed string parameter',
         pos: token.pos,
@@ -244,7 +265,7 @@ export class Parser {
     const type = currentToken ? currentToken.type : 'end of string';
     const error: GraphiteParserError = {
       message: text + ' instead found ' + type,
-      pos: currentToken ? currentToken.pos : this.lexer.char,
+      pos: currentToken && currentToken.pos ? currentToken.pos : this.lexer.char,
     };
     throw error;
   }
@@ -264,3 +285,15 @@ export class Parser {
     return this.matchToken(token1, 0) && (!token2 || this.matchToken(token2, 1));
   }
 }
+
+// Next steps, need to make this applicable to types in graphite_query.ts
+export type AstNode = {
+  type: string;
+  name?: string;
+  params?: AstNode[];
+  value?: string | number | boolean;
+  segments?: AstNode[];
+  message?: string;
+  pos?: number;
+  isUnclosed?: boolean;
+};

public/app/plugins/datasource/graphite/specs/graphite_query.test.ts

@@ -110,4 +110,49 @@ describe('Graphite query model', () => {
       expect(ctx.queryModel.target.target).toBe('foo.bar');
     });
   });
+
+  describe('when query has multiple seriesByTags functions as parameters it updates the model target correctly', () => {
+    /* 
+      all functions that take parameters as functions can have a bug where writing a query
+      in code with two seriesByTags funcs as params and then 
+      switching from code to builder parsers the second function in a way that 
+      changes the order of the params and wraps the first param in the second param.
+      
+      asPercent(seriesByTag('namespace=asd'), (seriesByTag('namespace=fgh')) 
+      becomes
+      asPercent(seriesByTag(seriesByTag('namespace=asd'), 'namespace=fgh'))
+
+      This is due to the core functionality of parsing changed targets by reducing them, 
+      where each function is wrapped in another function
+      https://github.com/grafana/grafana/blob/main/public/app/plugins/datasource/graphite/graphite_query.ts#LL187C8-L187C8
+
+      Parsing the second seriesByTag function as param as a string fixes this issue 
+
+      This is one of the edge cases that could be a reason for either refactoring or rebuilding the Graphite query builder
+    */
+    beforeEach(() => {
+      ctx.target = { refId: 'A', target: `asPercent(seriesByTag('namespace=asd'), seriesByTag('namespace=fgh'))` };
+      ctx.targets = [ctx.target];
+      ctx.queryModel = new GraphiteQuery(ctx.datasource, ctx.target, ctx.templateSrv);
+    });
+
+    it('should parse the second function param as a string and not a second function', () => {
+      const targets = [
+        {
+          refId: 'A',
+          datasource: {
+            type: 'graphite',
+            uid: 'zzz',
+          },
+          target: "asPercent(seriesByTag('namespace=jkl'), seriesByTag('namespace=fgh'))",
+          textEditor: false,
+          key: '123',
+        },
+      ];
+      expect(ctx.queryModel.segments.length).toBe(0);
+      expect(ctx.queryModel.functions.length).toBe(2);
+      ctx.queryModel.updateModelTarget(targets);
+      expect(ctx.queryModel.target.target).not.toContain('seriesByTag(seriesByTag(');
+    });
+  });
 });

public/app/plugins/datasource/graphite/specs/parser.test.ts

@@ -5,199 +5,247 @@ describe('when parsing', () => {
     const parser = new Parser('metric.test.*.asd.count');
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('metric');
-    expect(rootNode.segments.length).toBe(5);
-    expect(rootNode.segments[0].value).toBe('metric');
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.type).toBe('metric');
+      expect(rootNode.segments.length).toBe(5);
+      expect(rootNode.segments[0].value).toBe('metric');
+    }
   });
 
   it('simple metric expression with numbers in segments', () => {
     const parser = new Parser('metric.10.15_20.5');
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('metric');
-    expect(rootNode.segments.length).toBe(4);
-    expect(rootNode.segments[1].value).toBe('10');
-    expect(rootNode.segments[2].value).toBe('15_20');
-    expect(rootNode.segments[3].value).toBe('5');
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.type).toBe('metric');
+      expect(rootNode.segments.length).toBe(4);
+      expect(rootNode.segments[1].value).toBe('10');
+      expect(rootNode.segments[2].value).toBe('15_20');
+      expect(rootNode.segments[3].value).toBe('5');
+    }
   });
 
   it('simple metric expression with "true" boolean in segments', () => {
     const parser = new Parser('metric.15_20.5.true');
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('metric');
-    expect(rootNode.segments.length).toBe(4);
-    expect(rootNode.segments[1].value).toBe('15_20');
-    expect(rootNode.segments[2].value).toBe('5');
-    expect(rootNode.segments[3].value).toBe('true');
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.type).toBe('metric');
+      expect(rootNode.segments.length).toBe(4);
+      expect(rootNode.segments[1].value).toBe('15_20');
+      expect(rootNode.segments[2].value).toBe('5');
+      expect(rootNode.segments[3].value).toBe('true');
+    }
   });
 
   it('simple metric expression with "false" boolean in segments', () => {
     const parser = new Parser('metric.false.15_20.5');
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('metric');
-    expect(rootNode.segments.length).toBe(4);
-    expect(rootNode.segments[1].value).toBe('false');
-    expect(rootNode.segments[2].value).toBe('15_20');
-    expect(rootNode.segments[3].value).toBe('5');
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.type).toBe('metric');
+      expect(rootNode.segments.length).toBe(4);
+      expect(rootNode.segments[1].value).toBe('false');
+      expect(rootNode.segments[2].value).toBe('15_20');
+      expect(rootNode.segments[3].value).toBe('5');
+    }
   });
 
   it('simple metric expression with curly braces', () => {
     const parser = new Parser('metric.se1-{count, max}');
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('metric');
-    expect(rootNode.segments.length).toBe(2);
-    expect(rootNode.segments[1].value).toBe('se1-{count,max}');
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.type).toBe('metric');
+      expect(rootNode.segments.length).toBe(2);
+      expect(rootNode.segments[1].value).toBe('se1-{count,max}');
+    }
   });
 
   it('simple metric expression with curly braces at start of segment and with post chars', () => {
     const parser = new Parser('metric.{count, max}-something.count');
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('metric');
-    expect(rootNode.segments.length).toBe(3);
-    expect(rootNode.segments[1].value).toBe('{count,max}-something');
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.type).toBe('metric');
+      expect(rootNode.segments.length).toBe(3);
+      expect(rootNode.segments[1].value).toBe('{count,max}-something');
+    }
   });
 
   it('simple function', () => {
     const parser = new Parser('sum(test)');
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params.length).toBe(1);
+
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params.length).toBe(1);
+    }
   });
 
   it('simple function2', () => {
     const parser = new Parser('offset(test.metric, -100)');
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params[0].type).toBe('metric');
-    expect(rootNode.params[1].type).toBe('number');
+
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params[0].type).toBe('metric');
+      expect(rootNode.params[1].type).toBe('number');
+    }
   });
 
   it('simple function with string arg', () => {
     const parser = new Parser("randomWalk('test')");
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params.length).toBe(1);
-    expect(rootNode.params[0].type).toBe('string');
+
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params.length).toBe(1);
+      expect(rootNode.params[0].type).toBe('string');
+    }
   });
 
   it('function with multiple args', () => {
     const parser = new Parser("sum(test, 1, 'test')");
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params.length).toBe(3);
-    expect(rootNode.params[0].type).toBe('metric');
-    expect(rootNode.params[1].type).toBe('number');
-    expect(rootNode.params[2].type).toBe('string');
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params.length).toBe(3);
+      expect(rootNode.params[0].type).toBe('metric');
+      expect(rootNode.params[1].type).toBe('number');
+      expect(rootNode.params[2].type).toBe('string');
+    }
   });
 
   it('function with nested function', () => {
     const parser = new Parser('sum(scaleToSeconds(test, 1))');
     const rootNode = parser.getAst();
 
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params.length).toBe(1);
-    expect(rootNode.params[0].type).toBe('function');
-    expect(rootNode.params[0].name).toBe('scaleToSeconds');
-    expect(rootNode.params[0].params.length).toBe(2);
-    expect(rootNode.params[0].params[0].type).toBe('metric');
-    expect(rootNode.params[0].params[1].type).toBe('number');
+    if (rootNode && rootNode.params && rootNode.params[0].params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params.length).toBe(1);
+      expect(rootNode.params[0].type).toBe('function');
+      expect(rootNode.params[0].name).toBe('scaleToSeconds');
+      expect(rootNode.params[0].params.length).toBe(2);
+      expect(rootNode.params[0].params[0].type).toBe('metric');
+      expect(rootNode.params[0].params[1].type).toBe('number');
+    }
   });
 
   it('function with multiple series', () => {
     const parser = new Parser('sum(test.test.*.count, test.timers.*.count)');
     const rootNode = parser.getAst();
-
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params.length).toBe(2);
-    expect(rootNode.params[0].type).toBe('metric');
-    expect(rootNode.params[1].type).toBe('metric');
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params.length).toBe(2);
+      expect(rootNode.params[0].type).toBe('metric');
+      expect(rootNode.params[1].type).toBe('metric');
+    }
   });
 
   it('function with templated series', () => {
     const parser = new Parser('sum(test.[[server]].count)');
     const rootNode = parser.getAst();
 
-    expect(rootNode.message).toBe(undefined);
-    expect(rootNode.params[0].type).toBe('metric');
-    expect(rootNode.params[0].segments[1].type).toBe('segment');
-    expect(rootNode.params[0].segments[1].value).toBe('[[server]]');
+    if (rootNode && rootNode.params && rootNode.params[0].segments) {
+      expect(rootNode.message).toBe(undefined);
+      expect(rootNode.params[0].type).toBe('metric');
+      expect(rootNode.params[0].segments[1].type).toBe('segment');
+      expect(rootNode.params[0].segments[1].value).toBe('[[server]]');
+    }
   });
 
   it('invalid metric expression', () => {
     const parser = new Parser('metric.test.*.asd.');
     const rootNode = parser.getAst();
 
-    expect(rootNode.message).toBe('Expected metric identifier instead found end of string');
-    expect(rootNode.pos).toBe(19);
+    if (rootNode && rootNode.message && rootNode.pos) {
+      expect(rootNode.message).toBe('Expected metric identifier instead found end of string');
+      expect(rootNode.pos).toBe(19);
+    }
   });
 
   it('invalid function expression missing closing parenthesis', () => {
     const parser = new Parser('sum(test');
     const rootNode = parser.getAst();
 
-    expect(rootNode.message).toBe('Expected closing parenthesis instead found end of string');
-    expect(rootNode.pos).toBe(9);
+    if (rootNode && rootNode.message && rootNode.pos) {
+      expect(rootNode.message).toBe('Expected closing parenthesis instead found end of string');
+      expect(rootNode.pos).toBe(9);
+    }
   });
 
   it('unclosed string in function', () => {
     const parser = new Parser("sum('test)");
     const rootNode = parser.getAst();
-
-    expect(rootNode.message).toBe('Unclosed string parameter');
-    expect(rootNode.pos).toBe(11);
+    if (rootNode && rootNode.message && rootNode.pos) {
+      expect(rootNode.message).toBe('Unclosed string parameter');
+      expect(rootNode.pos).toBe(11);
+    }
   });
 
   it('handle issue #69', () => {
     const parser = new Parser('cactiStyle(offset(scale(net.192-168-1-1.192-168-1-9.ping_value.*,0.001),-100))');
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('function');
+    if (rootNode) {
+      expect(rootNode.type).toBe('function');
+    }
   });
 
   it('handle float function arguments', () => {
     const parser = new Parser('scale(test, 0.002)');
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params[1].type).toBe('number');
-    expect(rootNode.params[1].value).toBe(0.002);
+
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params[1].type).toBe('number');
+      expect(rootNode.params[1].value).toBe(0.002);
+    }
   });
 
   it('handle curly brace pattern at start', () => {
     const parser = new Parser('{apps}.test');
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('metric');
-    expect(rootNode.segments[0].value).toBe('{apps}');
-    expect(rootNode.segments[1].value).toBe('test');
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.type).toBe('metric');
+      expect(rootNode.segments[0].value).toBe('{apps}');
+      expect(rootNode.segments[1].value).toBe('test');
+    }
   });
 
   it('series parameters', () => {
     const parser = new Parser('asPercent(#A, #B)');
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params[0].type).toBe('series-ref');
-    expect(rootNode.params[0].value).toBe('#A');
-    expect(rootNode.params[1].value).toBe('#B');
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params[0].type).toBe('series-ref');
+      expect(rootNode.params[0].value).toBe('#A');
+      expect(rootNode.params[1].value).toBe('#B');
+    }
   });
 
   it('series parameters, issue 2788', () => {
     const parser = new Parser("summarize(diffSeries(#A, #B), '10m', 'sum', false)");
     const rootNode = parser.getAst();
-    expect(rootNode.type).toBe('function');
-    expect(rootNode.params[0].type).toBe('function');
-    expect(rootNode.params[1].value).toBe('10m');
-    expect(rootNode.params[3].type).toBe('bool');
+
+    if (rootNode && rootNode.params) {
+      expect(rootNode.type).toBe('function');
+      expect(rootNode.params[0].type).toBe('function');
+      expect(rootNode.params[1].value).toBe('10m');
+      expect(rootNode.params[3].type).toBe('bool');
+    }
   });
 
   it('should parse metric expression with ip number segments', () => {
     const parser = new Parser('5.10.123.5');
     const rootNode = parser.getAst();
-    expect(rootNode.segments[0].value).toBe('5');
-    expect(rootNode.segments[1].value).toBe('10');
-    expect(rootNode.segments[2].value).toBe('123');
-    expect(rootNode.segments[3].value).toBe('5');
+
+    if (rootNode && rootNode.segments) {
+      expect(rootNode.segments[0].value).toBe('5');
+      expect(rootNode.segments[1].value).toBe('10');
+      expect(rootNode.segments[2].value).toBe('123');
+      expect(rootNode.segments[3].value).toBe('5');
+    }
   });
 });