Function TestNewEncoder_OpenMetricsVersionDispatch

expfmt/encode_test.go:620–690

(t *testing.T)

}

func TestNewEncoder_OpenMetricsVersionDispatch(t *testing.T) {
	counterMetric := &dto.MetricFamily{
		Name: proto.String("test_counter"),
		Type: dto.MetricType_COUNTER.Enum(),
		Metric: []*dto.Metric{
			{
				Counter: &dto.Counter{
					Value: proto.Float64(42),
					CreatedTimestamp: &timestamppb.Timestamp{
						Seconds: 1234567890,
						Nanos:   0,
					},
				},
			},
		},
	}

	tests := []struct {
		name         string
		format       Format
		expectedLine string
	}{
		{
			name:         "OpenMetrics 1.0.0",
			format:       FmtOpenMetrics_1_0_0,
			expectedLine: "# TYPE test_counter unknown\ntest_counter 42.0\n",
		},
		{
			name:         "OpenMetrics 0.0.1",
			format:       FmtOpenMetrics_0_0_1,
			expectedLine: "# TYPE test_counter unknown\ntest_counter 42.0\n",
		},
		{
			name:         "OpenMetrics 2.0.0 standard",
			format:       fmtOpenMetrics_2_0_0,
			expectedLine: "# TYPE test_counter counter\ntest_counter 42.0 st@1234567890\n",
		},
		{
			name:         "OpenMetrics 2.0.0 reordered parameters",
			format:       Format("application/openmetrics-text; charset=utf-8; version=2.0.0"),
			expectedLine: "# TYPE test_counter counter\ntest_counter 42.0 st@1234567890\n",
		},
		{
			name:         "OpenMetrics 2.0.0 quoted version parameter",
			format:       Format(`application/openmetrics-text; version="2.0.0"; charset=utf-8`),
			expectedLine: "# TYPE test_counter counter\ntest_counter 42.0 st@1234567890\n",
		},
		{
			name:         "OpenMetrics 2.0.0 with escaping scheme",
			format:       Format("application/openmetrics-text; version=2.0.0; charset=utf-8; escaping=values"),
			expectedLine: "# TYPE test_counter counter\ntest_counter 42.0 st@1234567890\n",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			var buf bytes.Buffer
			enc := NewEncoder(&buf, tt.format)