/go-ranking

Primary LanguageGo

Go Ranking

Project created with the objective of learning and put in practice the stuff learned.

Dependencies

The dependencies are defined on go.mod.

  • github.com/stretchr/testify v1.3.0
  • github.com/urfave/cli v1.20.0

Roadmap

  • Implement Glicko2.
  • Define which type of sport will be the focus of the application of the Glicko2. (CS:GO)
  • Implement fetcher to get basic Competitors/Matches information.
    • Decide main source of information.
  • Try the ranking with real data.
    • Issue found: Needs to do one extra step if Team doesn't compete during a period.
  • Create a persistence layer to store the Competitors rankings and periods.
  • Tune Glicko2 formulas to accept importance/difficulty of the tournaments to which the Matches belongs.

Tests

The tests created at this moment reflect the example show on the glicko2 documentation that can be found on on the root of this project (link).

Observations

  • On some tests you may notice that instead of checking for equals, I'm looking for an Abs() for a specific margin. That is because the tests are done based on the data from the specification, which contains multiple floats round, that doesn't make sense to do on code. So the tests with margins are to consider that small difference.
  • Multiple variables referenced on the specification can be found on comments on the code with the prefix doc-ref.

Execute ranking cmd

cd ./ranking-go
go run ./cmd/ranking.go

Execute the tests

cd ./ranking-go
go test ./...

Development

Stack

VSCode Configurations

Workspace settings.json

{
    "go.alternateTools": {
        "go-langserver": "bingo",
      },
      "go.languageServerExperimentalFeatures": {
        "format": true,
        "autoComplete": true
      },
      "go.useLanguageServer": true
}

tasks.json

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Run Tests",
            "type": "shell",
            "options": {
                "cwd": "${workspaceFolder}"
            },
            "command": "go test ./..."
        },
        {
            "label": "Tidy Modules",
            "type": "shell",
            "options": {
                "cwd": "${workspaceFolder}",
                "env": {
                    "GO111MODULE": "on"
                }
            },
            "command": "go mod tidy"
        }
    ]
}