@netdata/charts/dist/es6/helpers/normalizeSelectedInstances.test.js

Netdata frontend SDK and chart utilities

import normalizeSelectedInstances from "./normalizeSelectedInstances";
describe("normalizeSelectedInstances", function () {
  var mockInstances = {
    "system.cpu@node1": {
      id: "system.cpu",
      nm: "cpu_usage@Node 1"
    },
    "system.cpu@node2": {
      id: "system.cpu",
      nm: "cpu_usage@Node 2"
    },
    "system.memory@node1": {
      id: "system.memory",
      nm: "memory_usage@Node 1"
    },
    "app.nginx@node3": {
      id: "app.nginx",
      nm: "nginx_requests@Node 3"
    }
  };
  it("should return empty array for empty selectedInstances", function () {
    var result = normalizeSelectedInstances([], mockInstances);
    expect(result).toEqual([]);
  });
  it("should return selectedInstances if instances is not an object", function () {
    var selected = ["system.cpu@node1"];
    var result = normalizeSelectedInstances(selected, null);
    expect(result).toEqual(selected);
  });
  it("should keep exact key match", function () {
    var selected = ["system.cpu@node1"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result).toEqual(["system.cpu@node1"]);
  });
  it("should match instance id without @ to all instances with that id", function () {
    var selected = ["system.cpu"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.cpu@node2"]);
  });
  it("should match with prefix wildcard *", function () {
    var selected = ["system.cpu*"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.cpu@node2"]);
  });
  it("should match with suffix wildcard *", function () {
    var selected = ["*@node1"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.memory@node1"]);
  });
  it("should match with both wildcards *", function () {
    var selected = ["*cpu*"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.cpu@node2"]);
  });
  it("should match instance name", function () {
    var selected = ["cpu_usage"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.cpu@node2"]);
  });
  it("should match instance name with wildcard", function () {
    var selected = ["*Node 1"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.memory@node1"]);
  });
  it("should remove duplicates", function () {
    var selected = ["system.cpu", "system.cpu@node1", "system.cpu*"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.cpu@node2"]);
  });
  it("should omit selections that dont match anything", function () {
    var selected = ["nonexistent", "system.cpu"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["system.cpu@node1", "system.cpu@node2"]);
  });
  it("should handle multiple different selections", function () {
    var selected = ["system.memory", "app.nginx@node3"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["app.nginx@node3", "system.memory@node1"]);
  });
  it("should skip invalid selections", function () {
    var selected = ["system.cpu", null, "", undefined, "app.nginx"];
    var result = normalizeSelectedInstances(selected, mockInstances);
    expect(result.sort()).toEqual(["app.nginx@node3", "system.cpu@node1", "system.cpu@node2"]);
  });
});