# Writing & Maintaining Tests

Pilgrim's tests are written using the testify framework and mockery.

### Generate Mocks

The below command, when executed from the project root, will generate mocks for
all interfaces in all packages of the project, and put them in the `mocks`
directory, under the `pilgrim_mock` package

```bash
$ mockery --all --outpkg pilgrim_mock --output ./internal/mocks
```

### Run Tests

To run all tests, execute the following from the root directory

```bash
$ go test ./...
```

### Coverage

To calculate test coverage, you have to build a special coverage binary and
execute it. To do this, run the following in the root directory:

```bash
$ go build -cover -o target/pilgrim_coverage main.go
```

To calculate the coverage, execute the binary. You must setup the `GOCOVERDIR`
environment variable in order to instruct the go coverage tool where to place
the coverage data. The standard place for this in `pilgrim` is `coverage`:
```bash
$ chmod 777 ./target/pilgrim_coverage
$ GOCOVERDIR=coverage ./target/pilgrim_coverage
```

This will produce several files containing the coverage data. To turn this into
a human-readable format, use the go coverage tool:
```bash
$ go tool covdata percent -i=coverage
```

Alternatively, run the `test_coverage.sh` script inside the `bin` directory:

```bash
$ ./bin/test_coverage.sh
```