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top_level_test.go
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package model
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestTopLevelTypical(t *testing.T) {
assert := assert.New(t)
tr := Trace{
&Span{TraceID: 1, SpanID: 1, ParentID: 0, Service: "mcnulty", Type: "web"},
&Span{TraceID: 1, SpanID: 2, ParentID: 1, Service: "mcnulty", Type: "sql"},
&Span{TraceID: 1, SpanID: 3, ParentID: 2, Service: "master-db", Type: "sql"},
&Span{TraceID: 1, SpanID: 4, ParentID: 1, Service: "redis", Type: "redis"},
&Span{TraceID: 1, SpanID: 5, ParentID: 1, Service: "mcnulty", Type: ""},
}
tr.ComputeTopLevel()
assert.True(tr[0].TopLevel(), "root span should be top-level")
assert.False(tr[1].TopLevel(), "main service, and not a root span, not top-level")
assert.True(tr[2].TopLevel(), "only 1 span for this service, should be top-level")
assert.True(tr[3].TopLevel(), "only 1 span for this service, should be top-level")
assert.False(tr[4].TopLevel(), "yet another sup span, not top-level")
}
func TestTopLevelSingle(t *testing.T) {
assert := assert.New(t)
tr := Trace{
&Span{TraceID: 1, SpanID: 1, ParentID: 0, Service: "mcnulty", Type: "web"},
}
tr.ComputeTopLevel()
assert.True(tr[0].TopLevel(), "root span should be top-level")
}
func TestTopLevelEmpty(t *testing.T) {
assert := assert.New(t)
tr := Trace{}
tr.ComputeTopLevel()
assert.Equal(0, len(tr), "trace should still be empty")
}
func TestTopLevelOneService(t *testing.T) {
assert := assert.New(t)
tr := Trace{
&Span{TraceID: 1, SpanID: 2, ParentID: 1, Service: "mcnulty", Type: "web"},
&Span{TraceID: 1, SpanID: 3, ParentID: 2, Service: "mcnulty", Type: "web"},
&Span{TraceID: 1, SpanID: 1, ParentID: 0, Service: "mcnulty", Type: "web"},
&Span{TraceID: 1, SpanID: 4, ParentID: 1, Service: "mcnulty", Type: "web"},
&Span{TraceID: 1, SpanID: 5, ParentID: 1, Service: "mcnulty", Type: "web"},
}
tr.ComputeTopLevel()
assert.False(tr[0].TopLevel(), "just a sub-span, not top-level")
assert.False(tr[1].TopLevel(), "just a sub-span, not top-level")
assert.True(tr[2].TopLevel(), "root span should be top-level")
assert.False(tr[3].TopLevel(), "just a sub-span, not top-level")
assert.False(tr[4].TopLevel(), "just a sub-span, not top-level")
}
func TestTopLevelLocalRoot(t *testing.T) {
assert := assert.New(t)
tr := Trace{
&Span{TraceID: 1, SpanID: 1, ParentID: 0, Service: "mcnulty", Type: "web"},
&Span{TraceID: 1, SpanID: 2, ParentID: 1, Service: "mcnulty", Type: "sql"},
&Span{TraceID: 1, SpanID: 3, ParentID: 2, Service: "master-db", Type: "sql"},
&Span{TraceID: 1, SpanID: 4, ParentID: 1, Service: "redis", Type: "redis"},
&Span{TraceID: 1, SpanID: 5, ParentID: 1, Service: "mcnulty", Type: ""},
&Span{TraceID: 1, SpanID: 6, ParentID: 4, Service: "redis", Type: "redis"},
&Span{TraceID: 1, SpanID: 7, ParentID: 4, Service: "redis", Type: "redis"},
}
tr.ComputeTopLevel()
assert.True(tr[0].TopLevel(), "root span should be top-level")
assert.False(tr[1].TopLevel(), "main service, and not a root span, not top-level")
assert.True(tr[2].TopLevel(), "only 1 span for this service, should be top-level")
assert.True(tr[3].TopLevel(), "top-level but not root")
assert.False(tr[4].TopLevel(), "yet another sup span, not top-level")
assert.False(tr[5].TopLevel(), "yet another sup span, not top-level")
assert.False(tr[6].TopLevel(), "yet another sup span, not top-level")
}
func TestTopLevelWithTag(t *testing.T) {
assert := assert.New(t)
tr := Trace{
&Span{TraceID: 1, SpanID: 1, ParentID: 0, Service: "mcnulty", Type: "web", Metrics: map[string]float64{"custom": 42}},
&Span{TraceID: 1, SpanID: 2, ParentID: 1, Service: "mcnulty", Type: "web", Metrics: map[string]float64{"custom": 42}},
}
tr.ComputeTopLevel()
t.Logf("%v\n", tr[1].Metrics)
assert.True(tr[0].TopLevel(), "root span should be top-level")
assert.Equal(float64(42), tr[0].Metrics["custom"], "custom metric should still be here")
assert.False(tr[1].TopLevel(), "not a top-level span")
assert.Equal(float64(42), tr[1].Metrics["custom"], "custom metric should still be here")
}
func TestTopLevelGetSetBlackBox(t *testing.T) {
assert := assert.New(t)
span := Span{}
assert.False(span.TopLevel(), "by default, all spans are considered non top-level")
span.setTopLevel(true)
assert.True(span.TopLevel(), "marked as top-level")
span.setTopLevel(false)
assert.False(span.TopLevel(), "no more top-level")
span.Metrics = map[string]float64{"custom": 42}
assert.False(span.TopLevel(), "by default, all spans are considered non top-level")
span.setTopLevel(true)
assert.True(span.TopLevel(), "marked as top-level")
span.setTopLevel(false)
assert.False(span.TopLevel(), "no more top-level")
}
func TestTopLevelGetSetMetrics(t *testing.T) {
assert := assert.New(t)
span := Span{}
assert.Nil(span.Metrics, "no meta at all")
span.setTopLevel(true)
assert.Equal(float64(1), span.Metrics["_top_level"], "should have a _top_level:1 flag")
span.setTopLevel(false)
assert.Equal(len(span.Metrics), 0, "no meta at all")
span.Metrics = map[string]float64{"custom": 42}
assert.False(span.TopLevel(), "still non top-level")
span.setTopLevel(true)
assert.Equal(float64(1), span.Metrics["_top_level"], "should have a _top_level:1 flag")
assert.Equal(float64(42), span.Metrics["custom"], "former metrics should still be here")
assert.True(span.TopLevel(), "marked as top-level")
span.setTopLevel(false)
assert.False(span.TopLevel(), "non top-level any more")
assert.Equal(float64(0), span.Metrics["_top_level"], "should have no _top_level:1 flag")
assert.Equal(float64(42), span.Metrics["custom"], "former metrics should still be here")
}
func TestForceMetrics(t *testing.T) {
assert := assert.New(t)
span := Span{}
assert.False(span.ForceMetrics(), "by default, metrics are not enforced for sub name spans")
span.Meta = map[string]string{"datadog.trace_metrics": "true"}
assert.True(span.ForceMetrics(), "metrics should be enforced because tag is present")
span.Meta = map[string]string{"env": "dev"}
assert.False(span.ForceMetrics(), "there's a tag, but metrics should not be enforced anyway")
}