package model

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestMeasurementTypeString(t *testing.T) {
	tests := []struct {
		value    int16
		expected string
	}{
		{value: 0, expected: "TM"},
		{value: 1, expected: "TS"},
		{value: 2, expected: "TC"},
		{value: 3, expected: "TA"},
		{value: 4, expected: "SP"},
	}

	for _, test := range tests {
		t.Run(test.expected, func(t *testing.T) {
			actual, err := MeasurementTypeString(test.value)
			require.NoError(t, err)
			assert.Equal(t, test.expected, actual)
		})
	}
}

func TestMeasurementTypeStringRejectsInvalidValues(t *testing.T) {
	for _, value := range []int16{-1, 5, 100} {
		_, err := MeasurementTypeString(value)
		require.Error(t, err)
		assert.Contains(t, err.Error(), "unsupported measurement type")
	}
}