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enum_test.go
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enum_test.go
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package enum
import (
"testing"
"time"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/metric"
"github.com/stretchr/testify/assert"
)
func createTestMetric() telegraf.Metric {
metric, _ := metric.New("m1",
map[string]string{"tag": "tag_value"},
map[string]interface{}{
"string_value": "test",
"int_value": int(13),
"true_value": true,
},
time.Now(),
)
return metric
}
func calculateProcessedValues(mapper EnumMapper, metric telegraf.Metric) map[string]interface{} {
processed := mapper.Apply(metric)
return processed[0].Fields()
}
func calculateProcessedTags(mapper EnumMapper, metric telegraf.Metric) map[string]string {
processed := mapper.Apply(metric)
return processed[0].Tags()
}
func assertFieldValue(t *testing.T, expected interface{}, field string, fields map[string]interface{}) {
value, present := fields[field]
assert.True(t, present, "value of field '"+field+"' was not present")
assert.EqualValues(t, expected, value)
}
func assertTagValue(t *testing.T, expected interface{}, tag string, tags map[string]string) {
value, present := tags[tag]
assert.True(t, present, "value of tag '"+tag+"' was not present")
assert.EqualValues(t, expected, value)
}
func TestRetainsMetric(t *testing.T) {
mapper := EnumMapper{}
source := createTestMetric()
target := mapper.Apply(source)[0]
fields := target.Fields()
assertFieldValue(t, "test", "string_value", fields)
assertFieldValue(t, 13, "int_value", fields)
assertFieldValue(t, true, "true_value", fields)
assert.Equal(t, "m1", target.Name())
assert.Equal(t, source.Tags(), target.Tags())
assert.Equal(t, source.Time(), target.Time())
}
func TestMapsSingleStringValue(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Field: "string_value", ValueMappings: map[string]interface{}{"test": int64(1)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, 1, "string_value", fields)
}
func TestMapsSingleStringValueTag(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Tag: "tag", ValueMappings: map[string]interface{}{"tag_value": "valuable"}}}}
tags := calculateProcessedTags(mapper, createTestMetric())
assertTagValue(t, "valuable", "tag", tags)
}
func TestNoFailureOnMappingsOnNonStringValuedFields(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Field: "int_value", ValueMappings: map[string]interface{}{"13i": int64(7)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, 13, "int_value", fields)
}
func TestMapSingleBoolValue(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Field: "true_value", ValueMappings: map[string]interface{}{"true": int64(1)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, 1, "true_value", fields)
}
func TestMapsToDefaultValueOnUnknownSourceValue(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Field: "string_value", Default: int64(42), ValueMappings: map[string]interface{}{"other": int64(1)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, 42, "string_value", fields)
}
func TestDoNotMapToDefaultValueKnownSourceValue(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Field: "string_value", Default: int64(42), ValueMappings: map[string]interface{}{"test": int64(1)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, 1, "string_value", fields)
}
func TestNoMappingWithoutDefaultOrDefinedMappingValue(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Field: "string_value", ValueMappings: map[string]interface{}{"other": int64(1)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, "test", "string_value", fields)
}
func TestWritesToDestination(t *testing.T) {
mapper := EnumMapper{Mappings: []Mapping{{Field: "string_value", Dest: "string_code", ValueMappings: map[string]interface{}{"test": int64(1)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, "test", "string_value", fields)
assertFieldValue(t, 1, "string_code", fields)
}
func TestDoNotWriteToDestinationWithoutDefaultOrDefinedMapping(t *testing.T) {
field := "string_code"
mapper := EnumMapper{Mappings: []Mapping{{Field: "string_value", Dest: field, ValueMappings: map[string]interface{}{"other": int64(1)}}}}
fields := calculateProcessedValues(mapper, createTestMetric())
assertFieldValue(t, "test", "string_value", fields)
_, present := fields[field]
assert.False(t, present, "value of field '"+field+"' was present")
}