chore: minor cleanup to address warnings (#293)

Author: kggilmer

aws-runtime/protocols/http/common/test/aws/sdk/kotlin/runtime/http/middleware/UserAgentTest.kt

@@ -26,7 +26,7 @@ import kotlin.test.assertTrue
 class UserAgentTest {
 
     @Test
-    fun `it sets ua headers`() = runSuspendTest {
+    fun itSetsUAHeaders() = runSuspendTest {
         val mockEngine = object : HttpClientEngineBase("test") {
             override suspend fun roundTrip(request: HttpRequest): HttpCall {
                 val resp = HttpResponse(HttpStatusCode.fromValue(200), Headers.Empty, HttpBody.Empty)

codegen/smithy-aws-kotlin-codegen/src/main/kotlin/aws/sdk/kotlin/codegen/AwsKotlinDependency.kt

@@ -17,7 +17,7 @@ const val AWS_CLIENT_RT_REGIONS_NS = "aws.sdk.kotlin.runtime.regions"
 private fun getDefaultRuntimeVersion(): String {
     // generated as part of the build, see smithy-aws-kotlin-codegen/build.gradle.kts
     try {
-        val version = object {}.javaClass.getResource("sdk-version.txt").readText()
+        val version = object {}.javaClass.getResource("sdk-version.txt")?.readText() ?: throw CodegenException("sdk-version.txt does not exist")
         check(isValidVersion(version)) { "Version parsed from sdk-version.txt '$version' is not a valid version string" }
         return version
     } catch (ex: Exception) {

examples/dynamodb-movies/src/main/kotlin/aws/sdk/kotlin/example/Main.kt

@@ -131,7 +131,7 @@ suspend fun DynamoDbClient.moviesInYear(name: String, year: Int): QueryResponse
 // utility/support functions
 
 fun getResourceAsText(path: String): String =
-    object {}.javaClass.getResource(path).readText()
+    object {}.javaClass.getResource(path)?.readText() ?: error("Unable to load $path")
 
 // map json to attribute values
 fun jsonElementToAttributeValue(element: JsonElement): AttributeValue = when {