[MM-57743] Enable errcheck linter (#26723)

server/public/plugin/interface_generator/main.go

@@ -511,7 +511,10 @@ func generateHooksGlue(info *PluginInterfaceInfo) {
 		})
 	}
 	templateResult := &bytes.Buffer{}
-	hooksTemplate.Execute(templateResult, &templateParams)
+	err = hooksTemplate.Execute(templateResult, &templateParams)
+	if err != nil {
+		panic(err)
+	}
 
 	formatted, err := imports.Process("", templateResult.Bytes(), nil)
 	if err != nil {
@@ -565,7 +568,10 @@ func generatePluginTimerLayer(info *PluginInterfaceInfo) {
 		}
 
 		templateResult := &bytes.Buffer{}
-		parsedTemplate.Execute(templateResult, &templateParams)
+		err = parsedTemplate.Execute(templateResult, &templateParams)
+		if err != nil {
+			panic(err)
+		}
 
 		formatted, err := imports.Process("", templateResult.Bytes(), nil)
 		if err != nil {

server/public/utils/fileutils_test.go

@@ -112,8 +112,12 @@ func TestFindFile(t *testing.T) {
 				if testCase.Cwd != nil {
 					prevDir, err := os.Getwd()
 					require.NoError(t, err)
-					defer os.Chdir(prevDir)
-					os.Chdir(*testCase.Cwd)
+					t.Cleanup(func() {
+						err = os.Chdir(prevDir)
+						assert.NoError(t, err)
+					})
+					err = os.Chdir(*testCase.Cwd)
+					assert.NoError(t, err)
 				}
 
 				assert.Equal(t, testCase.Expected, FindFile(testCase.FileName))