Resolve test paths from code source

- Add the ProjectPaths test helper that derives the module root from the test class code source and the repository root from the settings file above it
- Replace the working-directory-relative source and resource literals in thirty-five test classes with module and repository lookups
- Drop the bespoke source-root walk in PregenMantleCleanupContractTest

adapters/bukkit/plugin/src/test/java/art/arcane/iris/testsupport/ProjectPaths.java

@@ -0,0 +1,81 @@
+package art.arcane.iris.testsupport;
+
+import java.io.File;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.CodeSource;
+import java.security.ProtectionDomain;
+
+public final class ProjectPaths {
+    private static final Path MODULE_ROOT = resolveModuleRoot();
+    private static final Path REPOSITORY_ROOT = resolveRepositoryRoot(MODULE_ROOT);
+
+    private ProjectPaths() {
+    }
+
+    public static Path moduleRoot() {
+        return MODULE_ROOT;
+    }
+
+    public static Path repositoryRoot() {
+        return REPOSITORY_ROOT;
+    }
+
+    public static Path moduleFile(String relative) {
+        return MODULE_ROOT.resolve(relative).normalize();
+    }
+
+    public static Path repositoryFile(String relative) {
+        return REPOSITORY_ROOT.resolve(relative).normalize();
+    }
+
+    public static File moduleFileAt(String relative) {
+        return moduleFile(relative).toFile();
+    }
+
+    public static File repositoryFileAt(String relative) {
+        return repositoryFile(relative).toFile();
+    }
+
+    private static Path resolveModuleRoot() {
+        ProtectionDomain domain = ProjectPaths.class.getProtectionDomain();
+        CodeSource source = domain == null ? null : domain.getCodeSource();
+        URL location = source == null ? null : source.getLocation();
+
+        if (location != null) {
+            try {
+                Path current = Path.of(location.toURI()).toAbsolutePath().normalize();
+
+                while (current != null) {
+                    Path name = current.getFileName();
+
+                    if (name != null && "build".equals(name.toString()) && current.getParent() != null) {
+                        return current.getParent();
+                    }
+
+                    current = current.getParent();
+                }
+            } catch (URISyntaxException | IllegalArgumentException ignored) {
+                return Path.of("").toAbsolutePath().normalize();
+            }
+        }
+
+        return Path.of("").toAbsolutePath().normalize();
+    }
+
+    private static Path resolveRepositoryRoot(Path moduleRoot) {
+        Path current = moduleRoot;
+
+        while (current != null) {
+            if (Files.isRegularFile(current.resolve("settings.gradle"))) {
+                return current;
+            }
+
+            current = current.getParent();
+        }
+
+        return moduleRoot;
+    }
+}

adapters/modded-common/src/test/java/art/arcane/iris/modded/localization/ModdedMessageContributorTest.java

@@ -2,6 +2,7 @@ package art.arcane.iris.modded.localization;
 
 import art.arcane.iris.core.localization.IrisLanguage;
 import art.arcane.iris.core.localization.IrisMessages;
+import art.arcane.iris.modded.testsupport.ProjectPaths;
 import art.arcane.volmlib.util.localization.MessageKey;
 import art.arcane.volmlib.util.localization.VolmitLocales;
 import com.google.gson.JsonObject;
@@ -27,7 +28,7 @@ public class ModdedMessageContributorTest {
 
     @Test
     public void completeLoaderCatalogStillMatchesEveryDownloadableLocale() throws Exception {
-        Path sourceRoot = Path.of("../../core/src/main/resources/languages");
+        Path sourceRoot = ProjectPaths.repositoryFile("core/src/main/resources/languages");
         for (String locale : VolmitLocales.nonEnglish()) {
             JsonObject document = JsonParser.parseString(Files.readString(sourceRoot.resolve(locale + ".json")))
                     .getAsJsonObject();

adapters/modded-common/src/test/java/art/arcane/iris/modded/testsupport/ProjectPaths.java

@@ -0,0 +1,81 @@
+package art.arcane.iris.modded.testsupport;
+
+import java.io.File;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.CodeSource;
+import java.security.ProtectionDomain;
+
+public final class ProjectPaths {
+    private static final Path MODULE_ROOT = resolveModuleRoot();
+    private static final Path REPOSITORY_ROOT = resolveRepositoryRoot(MODULE_ROOT);
+
+    private ProjectPaths() {
+    }
+
+    public static Path moduleRoot() {
+        return MODULE_ROOT;
+    }
+
+    public static Path repositoryRoot() {
+        return REPOSITORY_ROOT;
+    }
+
+    public static Path moduleFile(String relative) {
+        return MODULE_ROOT.resolve(relative).normalize();
+    }
+
+    public static Path repositoryFile(String relative) {
+        return REPOSITORY_ROOT.resolve(relative).normalize();
+    }
+
+    public static File moduleFileAt(String relative) {
+        return moduleFile(relative).toFile();
+    }
+
+    public static File repositoryFileAt(String relative) {
+        return repositoryFile(relative).toFile();
+    }
+
+    private static Path resolveModuleRoot() {
+        ProtectionDomain domain = ProjectPaths.class.getProtectionDomain();
+        CodeSource source = domain == null ? null : domain.getCodeSource();
+        URL location = source == null ? null : source.getLocation();
+
+        if (location != null) {
+            try {
+                Path current = Path.of(location.toURI()).toAbsolutePath().normalize();
+
+                while (current != null) {
+                    Path name = current.getFileName();
+
+                    if (name != null && "build".equals(name.toString()) && current.getParent() != null) {
+                        return current.getParent();
+                    }
+
+                    current = current.getParent();
+                }
+            } catch (URISyntaxException | IllegalArgumentException ignored) {
+                return Path.of("").toAbsolutePath().normalize();
+            }
+        }
+
+        return Path.of("").toAbsolutePath().normalize();
+    }
+
+    private static Path resolveRepositoryRoot(Path moduleRoot) {
+        Path current = moduleRoot;
+
+        while (current != null) {
+            if (Files.isRegularFile(current.resolve("settings.gradle"))) {
+                return current;
+            }
+
+            current = current.getParent();
+        }
+
+        return moduleRoot;
+    }
+}

core/src/test/java/art/arcane/iris/core/localization/IrisDownloadValidationTest.java

@@ -1,5 +1,6 @@
 package art.arcane.iris.core.localization;
 
+import art.arcane.iris.testsupport.ProjectPaths;
 import art.arcane.volmlib.util.localization.LocaleOverlay;
 import art.arcane.volmlib.util.localization.LocalizationValidator;
 import art.arcane.volmlib.util.localization.RemoteLanguageCatalog;
@@ -111,7 +112,7 @@ public class IrisDownloadValidationTest {
     }
 
     private String completeCatalog() throws IOException {
-        return Files.readString(Path.of("src/main/resources/languages", LOCALE + ".json"));
+        return Files.readString(ProjectPaths.moduleFile("src/main/resources/languages").resolve(LOCALE + ".json"));
     }
 
     private String incompleteCatalog(String complete) {

core/src/test/java/art/arcane/iris/core/localization/IrisLanguageEditorTest.java

@@ -1,5 +1,6 @@
 package art.arcane.iris.core.localization;
 
+import art.arcane.iris.testsupport.ProjectPaths;
 import art.arcane.volmlib.util.localization.LocalizationCandidate;
 import art.arcane.volmlib.util.localization.LocalizationSnapshot;
 import art.arcane.volmlib.util.localization.PluginLanguageEditor;
@@ -49,7 +50,7 @@ public class IrisLanguageEditorTest {
         assertTrue(IrisLanguage.reload(directory, "en_US"));
         Path cache = IrisLanguage.remote(directory).cacheFile("fr_FR");
         Files.createDirectories(cache.getParent());
-        Files.copy(Path.of("src/main/resources/languages/fr_FR.json"), cache);
+        Files.copy(ProjectPaths.moduleFile("src/main/resources/languages/fr_FR.json"), cache);
         PluginLanguageEditor.Options options = IrisLanguage.editorOptions();
         LocalizationSnapshot english = LocalizationSnapshot.create(
                 LocalizationCandidate.english(IrisLanguage.catalog(), PluralSelector.oneOther()));
@@ -106,7 +107,7 @@ public class IrisLanguageEditorTest {
 
     @Test
     public void incompleteDownloadedLocaleCanBeEditedWithoutBeingSelected() throws Exception {
-        byte[] complete = Files.readAllBytes(Path.of("src/main/resources/languages/fr_FR.json"));
+        byte[] complete = Files.readAllBytes(ProjectPaths.moduleFile("src/main/resources/languages/fr_FR.json"));
         AtomicInteger requests = new AtomicInteger();
         Field remoteField = IrisLanguage.class.getDeclaredField("remote");
         remoteField.setAccessible(true);

core/src/test/java/art/arcane/iris/core/localization/IrisLanguageTest.java

@@ -1,6 +1,7 @@
 package art.arcane.iris.core.localization;
 
 import art.arcane.iris.core.IrisSettings;
+import art.arcane.iris.testsupport.ProjectPaths;
 import art.arcane.volmlib.util.localization.MessageArgument;
 import art.arcane.volmlib.util.localization.LocaleOverlay;
 import art.arcane.volmlib.util.localization.LocalizationValidationResult;
@@ -117,7 +118,7 @@ public class IrisLanguageTest {
         for (String locale : VolmitLocales.nonEnglish()) {
             Path target = IrisLanguage.remote(dataFolder).cacheFile(locale);
             Files.createDirectories(target.getParent());
-            Files.copy(Path.of("src/main/resources/languages", locale + ".json"), target, StandardCopyOption.REPLACE_EXISTING);
+            Files.copy(ProjectPaths.moduleFile("src/main/resources/languages").resolve(locale + ".json"), target, StandardCopyOption.REPLACE_EXISTING);
         }
     }
 
@@ -127,7 +128,7 @@ public class IrisLanguageTest {
     }
 
     private LocaleOverlay loadSourceOverlay(String locale) throws Exception {
-        Path source = Path.of("src/main/resources/languages", locale + ".json");
+        Path source = ProjectPaths.moduleFile("src/main/resources/languages").resolve(locale + ".json");
         return IrisLanguage.parseDownloadedOverlay(source.toString(), locale, Files.readString(source));
     }
 

core/src/test/java/art/arcane/iris/testsupport/ProjectPaths.java

@@ -0,0 +1,81 @@
+package art.arcane.iris.testsupport;
+
+import java.io.File;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.CodeSource;
+import java.security.ProtectionDomain;
+
+public final class ProjectPaths {
+    private static final Path MODULE_ROOT = resolveModuleRoot();
+    private static final Path REPOSITORY_ROOT = resolveRepositoryRoot(MODULE_ROOT);
+
+    private ProjectPaths() {
+    }
+
+    public static Path moduleRoot() {
+        return MODULE_ROOT;
+    }
+
+    public static Path repositoryRoot() {
+        return REPOSITORY_ROOT;
+    }
+
+    public static Path moduleFile(String relative) {
+        return MODULE_ROOT.resolve(relative).normalize();
+    }
+
+    public static Path repositoryFile(String relative) {
+        return REPOSITORY_ROOT.resolve(relative).normalize();
+    }
+
+    public static File moduleFileAt(String relative) {
+        return moduleFile(relative).toFile();
+    }
+
+    public static File repositoryFileAt(String relative) {
+        return repositoryFile(relative).toFile();
+    }
+
+    private static Path resolveModuleRoot() {
+        ProtectionDomain domain = ProjectPaths.class.getProtectionDomain();
+        CodeSource source = domain == null ? null : domain.getCodeSource();
+        URL location = source == null ? null : source.getLocation();
+
+        if (location != null) {
+            try {
+                Path current = Path.of(location.toURI()).toAbsolutePath().normalize();
+
+                while (current != null) {
+                    Path name = current.getFileName();
+
+                    if (name != null && "build".equals(name.toString()) && current.getParent() != null) {
+                        return current.getParent();
+                    }
+
+                    current = current.getParent();
+                }
+            } catch (URISyntaxException | IllegalArgumentException ignored) {
+                return Path.of("").toAbsolutePath().normalize();
+            }
+        }
+
+        return Path.of("").toAbsolutePath().normalize();
+    }
+
+    private static Path resolveRepositoryRoot(Path moduleRoot) {
+        Path current = moduleRoot;
+
+        while (current != null) {
+            if (Files.isRegularFile(current.resolve("settings.gradle"))) {
+                return current;
+            }
+
+            current = current.getParent();
+        }
+
+        return moduleRoot;
+    }
+}