issue 966: different user agent for unit tests (#1279)

Signed-off-by: Shashwat Pandey <72958686+SypherSP@users.noreply.github.com>

.github/workflows/checks.yml

@@ -9,7 +9,7 @@
 # The build.yml workflow includes some additional checks we run only for
 # already-merged changes to release branches and tags, as a compromise to
 # keep the PR feedback relatively fast. The intent is that checks.yml should
-# catch most problems but that build.yml might occasionally by the one to catch
+# catch most problems but that build.yml might occasionally be the one to catch
 # more esoteric situations, such as architecture-specific or OS-specific
 # misbehavior.
 
@@ -36,6 +36,9 @@ jobs:
     name: "Unit Tests"
     runs-on: ubuntu-latest
 
+    env:
+      TF_APPEND_USER_AGENT: Integration-Test
+
     steps:
       - name: "Fetch source code"
         uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3

internal/httpclient/client_test.go

@@ -10,12 +10,18 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"net/url"
+	"os"
 	"testing"
 
 	"github.com/opentofu/opentofu/version"
 )
 
 func TestNew_userAgent(t *testing.T) {
+
+	appendUaVal := os.Getenv(appendUaEnvVar)
+	os.Unsetenv(appendUaEnvVar)
+	defer os.Setenv(appendUaEnvVar, appendUaVal)
+
 	var actualUserAgent string
 	ts := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
 		actualUserAgent = req.UserAgent()

internal/httpclient/useragent_test.go

@@ -7,12 +7,18 @@ package httpclient
 
 import (
 	"fmt"
+	"os"
 	"testing"
 
 	"github.com/opentofu/opentofu/version"
 )
 
 func TestUserAgentString_env(t *testing.T) {
+
+	appendUaVal := os.Getenv(appendUaEnvVar)
+	os.Unsetenv(appendUaEnvVar)
+	defer os.Setenv(appendUaEnvVar, appendUaVal)
+
 	expectedBase := fmt.Sprintf("%s/%s", DefaultApplicationName, version.Version)
 
 	for i, c := range []struct {
@@ -67,6 +73,11 @@ func TestUserAgentAppendViaEnvVar(t *testing.T) {
 	}
 }
 func TestCustomUserAgentViaEnvVar(t *testing.T) {
+
+	appendUaVal := os.Getenv(appendUaEnvVar)
+	os.Unsetenv(appendUaEnvVar)
+	defer os.Setenv(appendUaEnvVar, appendUaVal)
+
 	testCases := []struct {
 		envVarValue string
 	}{