- static method in Schema to infer a schema from various data sources

- Bug fixes in schema inferral

Author: JohannesJander

src/test/java/io/frictionlessdata/tableschema/schema/SchemaInferralTests.java

@@ -159,15 +159,29 @@ void testInferFromArrayNodeData() throws Exception {
     @Test
     @DisplayName("Test infer from List containing File objects")
     void testInferFromListWithFiles() throws Exception {
-        File testFile = getResourceFile("/testsuite-data/files/csv/1mb.csv");
-        File testFile2 = getResourceFile("/testsuite-data/files/csv/10mb.csv");
+        String testFileContent = TestHelper.getResourceFileContent("/testsuite-data/files/csv/1mb.csv");
+        String testFile2Content = TestHelper.getResourceFileContent("/testsuite-data/files/csv/10mb.csv");
+        File tempDirPath = Files.createTempDirectory("datapackage-").toFile();
+
+        // Write content to temporary files
+        File testFile = new File(tempDirPath, "test1.csv");
+        Files.write(testFile.toPath(), testFileContent.getBytes(StandardCharsets.UTF_8));
+
+        File testFile2 = new File(tempDirPath, "test2.csv");
+        Files.write(testFile2.toPath(), testFile2Content.getBytes(StandardCharsets.UTF_8));
+
         List<File> fileList = Arrays.asList(testFile, testFile2);
 
         Schema schema = Schema.infer(fileList, StandardCharsets.UTF_8);
 
         Assertions.assertNotNull(schema);
         Assertions.assertTrue(schema.getFields().size() > 0);
         Assertions.assertTrue(schema.isValid());
+
+        // Clean up
+        testFile.deleteOnExit();
+        testFile2.deleteOnExit();
+        tempDirPath.deleteOnExit();
     }
 
     @Test