Set-up basic CI with GH actions (#6)

* CI that runs golangci-lint and unit tests in a GitHub action

* Fix defects in unit tests for templated generator

Author: stoewer

.github/workflows/lint-test.yml

@@ -0,0 +1,25 @@
+name: Lint and Test
+
+on: [push]
+
+jobs:
+  lint-and-test:
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set-up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: ^1.18
+          cache: true
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.50.1
+          args: --config ./golangci.yml
+
+      - name: Test
+        run: make test

pkg/tracegen/templated_test.go

@@ -12,7 +12,7 @@ import (
 const testRounds = 5
 
 func TestTemplatedGenerator_Traces(t *testing.T) {
-	attributeSemantics := []OTelSemantics{SemanticsNone, SemanticsHTTP}
+	attributeSemantics := []OTelSemantics{SemanticsHTTP}
 	template := TraceTemplate{
 		Defaults: SpanDefaults{
 			Attributes:       map[string]interface{}{"fixed.attr": "some-value"},
@@ -27,7 +27,7 @@ func TestTemplatedGenerator_Traces(t *testing.T) {
 	}
 
 	for _, semantics := range attributeSemantics {
-		template.Defaults.AttributeSemantics = semantics
+		template.Defaults.AttributeSemantics = &semantics
 		gen, err := NewTemplatedGenerator(&template)
 		assert.NoError(t, err)
 
@@ -43,7 +43,7 @@ func TestTemplatedGenerator_Traces(t *testing.T) {
 				}
 				if span.Kind() != ptrace.SpanKindInternal {
 					assert.GreaterOrEqual(t, attributesWithPrefix(span, "net."), 3)
-					if template.Defaults.AttributeSemantics == SemanticsHTTP {
+					if *template.Defaults.AttributeSemantics == SemanticsHTTP {
 						assert.GreaterOrEqual(t, attributesWithPrefix(span, "http."), 5)
 					}
 				}