dweiss commented on a change in pull request #470:
URL: https://github.com/apache/lucene/pull/470#discussion_r761687444
##########
File path:
lucene/distribution-tests/src/test/org/apache/lucene/distribution/TestModularLayer.java
##########
@@ -108,4 +140,76 @@ public void testAllModulesHaveExpectedVersion() {
.isEqualTo(luceneBuildVersion);
}
}
+
+ /** Ensure SPIs are equal for the module and classpath layer. */
+ @Test
+ public void testModularAndClasspathProvidersAreConsistent() throws
IOException {
+ for (var module : allModules) {
+ TreeMap<String, TreeSet<String>> modularProviders =
getModularServiceProviders(module);
+ TreeMap<String, TreeSet<String>> classpathProviders =
getClasspathServiceProviders(module);
+
+ // Compare services first so that the exception is shorter.
+ Assertions.assertThat(modularProviders.keySet())
+ .as("Modular services in module: " + module.descriptor().name())
+ .containsAll(classpathProviders.keySet());
+
+ // We're sure the services correspond to each other. Now, for each
service, compare the
+ // providers.
+ for (var service : modularProviders.keySet()) {
+ Assertions.assertThat(modularProviders.get(service))
+ .as(
+ "Modular providers of service "
+ + service
+ + " in module: "
+ + module.descriptor().name())
+ .containsAll(classpathProviders.get(service));
+ }
+ }
+ }
+
+ private TreeMap<String, TreeSet<String>>
getClasspathServiceProviders(ModuleReference module)
+ throws IOException {
+ TreeMap<String, TreeSet<String>> services = new TreeMap<>();
+ Pattern serviceEntryPattern =
Pattern.compile("META-INF/services/(?<serviceName>.+)");
+ try (ModuleReader reader = module.open();
+ Stream<String> entryStream = reader.list()) {
+ List<String> serviceProviderEntryList =
+ entryStream
+ .filter(entry -> serviceEntryPattern.matcher(entry).find())
+ .collect(Collectors.toList());
+
+ for (String entry : serviceProviderEntryList) {
+ List<String> implementations;
+ try (InputStream is = reader.open(entry).get()) {
+ implementations =
+ Arrays.stream(new String(is.readAllBytes(),
StandardCharsets.UTF_8).split("\n"))
Review comment:
there is trim that follows - it's needed to remove leading/trailing
blanks and does it anyway.
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