grafana/public/app/plugins/datasource/graphite/specs/parser.jest.ts

import { Parser } from "../parser";

describe("when parsing", function() {
  it("simple metric expression", function() {
    var parser = new Parser("metric.test.*.asd.count");
    var rootNode = parser.getAst();

    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", function() {
    var parser = new Parser("metric.10.15_20.5");
    var 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");
  });

  it("simple metric expression with curly braces", function() {
    var parser = new Parser("metric.se1-{count, max}");
    var rootNode = parser.getAst();

    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", function() {
    var parser = new Parser("metric.{count, max}-something.count");
    var rootNode = parser.getAst();

    expect(rootNode.type).toBe("metric");
    expect(rootNode.segments.length).toBe(3);
    expect(rootNode.segments[1].value).toBe("{count,max}-something");
  });

  it("simple function", function() {
    var parser = new Parser("sum(test)");
    var rootNode = parser.getAst();
    expect(rootNode.type).toBe("function");
    expect(rootNode.params.length).toBe(1);
  });

  it("simple function2", function() {
    var parser = new Parser("offset(test.metric, -100)");
    var rootNode = parser.getAst();
    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", function() {
    var parser = new Parser("randomWalk('test')");
    var rootNode = parser.getAst();
    expect(rootNode.type).toBe("function");
    expect(rootNode.params.length).toBe(1);
    expect(rootNode.params[0].type).toBe("string");
  });

  it("function with multiple args", function() {
    var parser = new Parser("sum(test, 1, 'test')");
    var 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");
  });

  it("function with nested function", function() {
    var parser = new Parser("sum(scaleToSeconds(test, 1))");
    var 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");
  });

  it("function with multiple series", function() {
    var parser = new Parser("sum(test.test.*.count, test.timers.*.count)");
    var 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");
  });

  it("function with templated series", function() {
    var parser = new Parser("sum(test.[[server]].count)");
    var 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]]");
  });

  it("invalid metric expression", function() {
    var parser = new Parser("metric.test.*.asd.");
    var rootNode = parser.getAst();

    expect(rootNode.message).toBe(
      "Expected metric identifier instead found end of string"
    );
    expect(rootNode.pos).toBe(19);
  });

  it("invalid function expression missing closing parenthesis", function() {
    var parser = new Parser("sum(test");
    var rootNode = parser.getAst();

    expect(rootNode.message).toBe(
      "Expected closing parenthesis instead found end of string"
    );
    expect(rootNode.pos).toBe(9);
  });

  it("unclosed string in function", function() {
    var parser = new Parser("sum('test)");
    var rootNode = parser.getAst();

    expect(rootNode.message).toBe("Unclosed string parameter");
    expect(rootNode.pos).toBe(11);
  });

  it("handle issue #69", function() {
    var parser = new Parser(
      "cactiStyle(offset(scale(net.192-168-1-1.192-168-1-9.ping_value.*,0.001),-100))"
    );
    var rootNode = parser.getAst();
    expect(rootNode.type).toBe("function");
  });

  it("handle float function arguments", function() {
    var parser = new Parser("scale(test, 0.002)");
    var rootNode = parser.getAst();
    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", function() {
    var parser = new Parser("{apps}.test");
    var rootNode = parser.getAst();
    expect(rootNode.type).toBe("metric");
    expect(rootNode.segments[0].value).toBe("{apps}");
    expect(rootNode.segments[1].value).toBe("test");
  });

  it("series parameters", function() {
    var parser = new Parser("asPercent(#A, #B)");
    var 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");
  });

  it("series parameters, issue 2788", function() {
    var parser = new Parser(
      "summarize(diffSeries(#A, #B), '10m', 'sum', false)"
    );
    var 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");
  });

  it("should parse metric expression with ip number segments", function() {
    var parser = new Parser("5.10.123.5");
    var 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");
  });
});