72 lines
1.8 KiB
Go
72 lines
1.8 KiB
Go
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package tracer
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/assert"
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"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/internal"
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)
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func TestContextWithSpan(t *testing.T) {
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want := &span{SpanID: 123}
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ctx := ContextWithSpan(context.Background(), want)
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got, ok := ctx.Value(activeSpanKey).(*span)
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assert := assert.New(t)
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assert.True(ok)
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assert.Equal(got, want)
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}
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func TestSpanFromContext(t *testing.T) {
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t.Run("regular", func(t *testing.T) {
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assert := assert.New(t)
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want := &span{SpanID: 123}
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ctx := ContextWithSpan(context.Background(), want)
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got, ok := SpanFromContext(ctx)
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assert.True(ok)
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assert.Equal(got, want)
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})
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t.Run("no-op", func(t *testing.T) {
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assert := assert.New(t)
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span, ok := SpanFromContext(context.Background())
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assert.False(ok)
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_, ok = span.(*internal.NoopSpan)
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assert.True(ok)
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span, ok = SpanFromContext(nil)
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assert.False(ok)
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_, ok = span.(*internal.NoopSpan)
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assert.True(ok)
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})
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}
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func TestStartSpanFromContext(t *testing.T) {
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_, _, stop := startTestTracer()
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defer stop()
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parent := &span{context: &spanContext{spanID: 123, traceID: 456}}
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parent2 := &span{context: &spanContext{spanID: 789, traceID: 456}}
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pctx := ContextWithSpan(context.Background(), parent)
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child, ctx := StartSpanFromContext(
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pctx,
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"http.request",
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ServiceName("gin"),
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ResourceName("/"),
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ChildOf(parent2.Context()), // we do this to assert that the span in pctx takes priority.
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)
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assert := assert.New(t)
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got, ok := child.(*span)
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assert.True(ok)
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gotctx, ok := SpanFromContext(ctx)
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assert.True(ok)
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assert.Equal(gotctx, got)
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_, ok = gotctx.(*internal.NoopSpan)
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assert.False(ok)
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assert.Equal(uint64(456), got.TraceID)
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assert.Equal(uint64(123), got.ParentID)
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assert.Equal("http.request", got.Name)
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assert.Equal("gin", got.Service)
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assert.Equal("/", got.Resource)
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}
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