Add more unit tests

Signed-off-by: Martin Hickey <[email protected]>

exporter/instanaexporter/config_test.go

@@ -20,7 +20,7 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestConfig_Validate(t *testing.T) {
+func TestConfigValidate(t *testing.T) {
 	t.Run("Empty configuration", func(t *testing.T) {
 		c := &Config{}
 		err := c.Validate()

exporter/instanaexporter/exporter_test.go

@@ -0,0 +1,96 @@
+// Copyright 2022, OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package instanaexporter
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"go.opentelemetry.io/collector/component/componenttest"
+	"go.opentelemetry.io/collector/config"
+	"go.opentelemetry.io/collector/config/confighttp"
+	"go.opentelemetry.io/collector/pdata/pcommon"
+	"go.opentelemetry.io/collector/pdata/ptrace"
+
+	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/instanaexporter/internal/testutils"
+)
+
+func TestPushConvertedDefaultTraces(t *testing.T) {
+	traceServer := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
+		rw.WriteHeader(http.StatusAccepted)
+	}))
+	defer traceServer.Close()
+
+	cfg := Config{
+		AgentKey:           "key11",
+		HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: traceServer.URL},
+		Endpoint:           traceServer.URL,
+		ExporterSettings:   config.NewExporterSettings(config.NewComponentIDWithName(typeStr, "valid")),
+	}
+
+	instanaExporter, err := newInstanaExporter(&cfg,
+		componenttest.NewNopExporterCreateSettings())
+	assert.NoError(t, err)
+
+	err = instanaExporter.pushConvertedTraces(context.Background(), testutils.TestTraces.Clone())
+	assert.NoError(t, err)
+}
+
+func TestPushConvertedSimpleTraces(t *testing.T) {
+	got := make(chan string, 1)
+	traceServer := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
+		assert.Equal(t, "key11", req.Header.Get("x-instana-key"))
+		got <- req.Header.Get("Content-Type")
+		rw.WriteHeader(http.StatusAccepted)
+	}))
+	defer traceServer.Close()
+
+	cfg := Config{
+		AgentKey:           "key11",
+		HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: traceServer.URL},
+		Endpoint:           traceServer.URL,
+		ExporterSettings:   config.NewExporterSettings(config.NewComponentIDWithName(typeStr, "valid")),
+	}
+
+	instanaExporter, err := newInstanaExporter(&cfg,
+		componenttest.NewNopExporterCreateSettings())
+	assert.NoError(t, err)
+
+	err = instanaExporter.pushConvertedTraces(context.Background(), simpleTraces())
+	assert.NoError(t, err)
+}
+
+func simpleTraces() ptrace.Traces {
+	return genTraces(pcommon.NewTraceID([16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4}), nil)
+}
+
+func genTraces(traceID pcommon.TraceID, attrs map[string]interface{}) ptrace.Traces {
+	traces := ptrace.NewTraces()
+	rspans := traces.ResourceSpans().AppendEmpty()
+	span := rspans.ScopeSpans().AppendEmpty().Spans().AppendEmpty()
+	span.SetTraceID(traceID)
+	span.SetSpanID(pcommon.NewSpanID([8]byte{0, 0, 0, 0, 1, 2, 3, 4}))
+	if attrs == nil {
+		return traces
+	}
+	pcommon.NewMapFromRaw(attrs).Range(func(k string, v pcommon.Value) bool {
+		rspans.Resource().Attributes().Insert(k, v)
+		return true
+	})
+	return traces
+}

exporter/instanaexporter/internal/testutils/test_utils.go

@@ -0,0 +1,43 @@
+// Copyright 2022, OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package testutils
+
+import (
+	"go.opentelemetry.io/collector/pdata/pcommon"
+	"go.opentelemetry.io/collector/pdata/ptrace"
+)
+
+var (
+	testAttributes = map[string]string{"instana.agent": "agent1"}
+	// TestTraces traces for tests.
+	TestTraces = newTracesWithAttributeMap(testAttributes)
+)
+
+func fillAttributeMap(attrs pcommon.Map, mp map[string]string) {
+	attrs.Clear()
+	attrs.EnsureCapacity(len(mp))
+	for k, v := range mp {
+		attrs.Insert(k, pcommon.NewValueString(v))
+	}
+}
+
+func newTracesWithAttributeMap(mp map[string]string) ptrace.Traces {
+	traces := ptrace.NewTraces()
+	resourceSpans := traces.ResourceSpans()
+	rs := resourceSpans.AppendEmpty()
+	fillAttributeMap(rs.Resource().Attributes(), mp)
+	rs.ScopeSpans().AppendEmpty().Spans().AppendEmpty()
+	return traces
+}