### Write a test

Source: https://github.com/bradleyjkemp/cupaloy/blob/master/README.md

Example of writing a test case using cupaloy.SnapshotT to capture and compare test output against a snapshot.

```golang
func TestParsing(t *testing.T) {
    ast := ParseFile("test_input")

    // check that the result is the same as the last time the snapshot was updated
    // if the result has changed (e.g. because the behaviour of the parser has changed)
    // then the test will be failed with an error containing a diff of the changes
    cupaloy.SnapshotT(t, ast)
}
```

--------------------------------

### Table driven tests

Source: https://github.com/bradleyjkemp/cupaloy/blob/master/README.md

Example demonstrating how to use cupaloy.SnapshotT within table-driven tests to snapshot the result of each test case.

```golang
var testCases = map[string][]string{
    "TestCaseOne": []string{......},
    "AnotherTestCase": []string{......},
    ....
}

func TestCases(t *testing.T) {
    for testName, args := range testCases {
        t.Run(testName, func(t *testing.T) {
            result := functionUnderTest(args...)
            cupaloy.SnapshotT(t, result)
        })
    }
}
```

--------------------------------

### Changing output directory

Source: https://github.com/bradleyjkemp/cupaloy/blob/master/README.md

Example of creating a new cupaloy snapshotter with a custom subdirectory for storing snapshots and then using it to snapshot a result.

```golang
func TestSubdirectory(t *testing.T) {
    result := someFunction()
    snapshotter := cupaloy.New(cupaloy.SnapshotSubdirectory("testdata"))
    err := snapshotter.Snapshot(result)
    if err != nil {
        t.Fatalf("error: %s", err)
    }
}
```

--------------------------------

### Update a snapshot

Source: https://github.com/bradleyjkemp/cupaloy/blob/master/README.md

Command to update snapshot files by setting the UPDATE_SNAPSHOTS environment variable and re-running tests.

```bash
UPDATE_SNAPSHOTS=true go test ./...
```

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