tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/TestBase.java

   1 package org.simantics.scl.compiler.tests;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.io.StringWriter;
   6 import java.nio.charset.Charset;
   7 import java.util.ArrayList;
   8 import java.util.Arrays;
   9 import java.util.regex.Pattern;
  10
  11 import org.junit.Assert;
  12 import org.simantics.scl.compiler.errors.Failable;
  13 import org.simantics.scl.compiler.errors.Failure;
  14 import org.simantics.scl.compiler.module.ImportDeclaration;
  15 import org.simantics.scl.compiler.module.Module;
  16 import org.simantics.scl.compiler.module.options.ModuleCompilationOptions;
  17 import org.simantics.scl.compiler.module.repository.ModuleRepository;
  18 import org.simantics.scl.compiler.module.repository.UpdateListener;
  19 import org.simantics.scl.compiler.source.ModuleSource;
  20 import org.simantics.scl.compiler.source.StringModuleSource;
  21 import org.simantics.scl.compiler.source.repository.MapModuleSourceRepository;
  22 import org.simantics.scl.compiler.top.ValueNotFound;
  23 import org.simantics.scl.runtime.SCLContext;
  24 import org.simantics.scl.runtime.reporting.SCLReportingHandler;
  25 import org.simantics.scl.runtime.reporting.WriterSCLReportingHandler;
  26
  27 public class TestBase {
  28
  29     public static final ModuleRepository PRELUDE_MODULE_REPOSITORY = InitialRepository.getInitialRepository();
  30     private static final Pattern TEST_SEPARATOR = Pattern.compile("^--+ *$", Pattern.MULTILINE);
  31     private static final Charset UTF8 = Charset.forName("UTF-8");
  32
  33     String path;
  34
  35     public TestBase(String path) {
  36         this.path = path;
  37     }
  38
  39     protected void test() {
  40         String testModuleName = Thread.currentThread().getStackTrace()[2].getMethodName();
  41         String testPath = path + "/" + testModuleName + ".scl";
  42
  43         try {
  44             String[] testParts = readTestParts(testPath);
  45
  46             int j=0;
  47             ArrayList<String> auxModuleNameList = new ArrayList<String>();
  48             while(j < testParts.length) {
  49                 String part = testParts[j];
  50                 if(part.startsWith("// module "))
  51                     auxModuleNameList.add(part.substring(10).split("\\n", 2)[0].trim());
  52                 else
  53                     break;
  54                 ++j;
  55             }
  56             int mainId = j;
  57             String[] moduleNames = new String[mainId+1];
  58             String[] moduleTexts = new String[mainId+1];
  59             for(int i=0;i<mainId;++i) {
  60                 moduleNames[i] = auxModuleNameList.get(i);
  61                 moduleTexts[i] = testParts[i];
  62             }
  63             moduleNames[mainId] = testModuleName;
  64
  65             for(;j<testParts.length;j+=2) {
  66                 moduleTexts[mainId] = testParts[j];
  67                 String expectedOutput = j+1<testParts.length ? testParts[j+1] : "";
  68                 String actualOutput = test(moduleNames, moduleTexts);
  69                 Assert.assertEquals(
  70                         canonicalizeOutput(expectedOutput),
  71                         canonicalizeOutput(actualOutput));
  72             }
  73         } catch(IOException e) {
  74             throw new RuntimeException(e);
  75         } catch (ValueNotFound e) {
  76             throw new RuntimeException(e);
  77         }
  78     }
  79
  80     private static String canonicalizeOutput(String text) {
  81         return text.trim().replace("\r\n", "\n");
  82     }
  83
  84     protected String test(String[] moduleNames, String[] moduleTexts) throws ValueNotFound {
  85         if(moduleNames.length != moduleTexts.length)
  86             throw new IllegalArgumentException();
  87         /*for(int i=0;i<moduleNames.length;++i) {
  88             System.out.println("-- " + moduleNames[i] + " --");
  89             System.out.println(moduleTexts[i]);
  90         }*/
  91
  92         ModuleSource[] moduleSources = new ModuleSource[moduleNames.length];
  93         for(int i=0;i<moduleNames.length;++i)
  94             moduleSources[i] = new StringModuleSource(
  95                     moduleNames[i], getClass().getClassLoader(), moduleTexts[i]) {
  96                 @Override
  97                 protected ImportDeclaration[] getBuiltinImports(UpdateListener listener) {
  98                     return ImportDeclaration.ONLY_BUILTINS;
  99                 }
 100             };
 101         ModuleRepository testRepository = new ModuleRepository(
 102                 PRELUDE_MODULE_REPOSITORY,
 103                 new MapModuleSourceRepository(moduleSources));
 104         testRepository.setAdvisor(moduleName -> ModuleCompilationOptions.SILENT);
 105         int lastId = moduleNames.length-1;
 106         Failable<Module> result = testRepository.getModule(moduleNames[lastId]);
 107         if(!result.didSucceed())
 108             return ((Failure)result).toString(moduleTexts[lastId]);
 109         else {
 110             SCLContext context = SCLContext.getCurrent();
 111             StringWriter writer = new StringWriter();
 112             Object oldReportingHandler = context.put(SCLReportingHandler.REPORTING_HANDLER, new WriterSCLReportingHandler(writer));
 113             try {
 114                 Object main = testRepository.getRuntimeModule(moduleNames[lastId]).getResult().getValue("main");
 115                 writer.write(String.valueOf(main));
 116                 return writer.toString();
 117             } finally {
 118                 context.put(SCLReportingHandler.REPORTING_HANDLER, oldReportingHandler);
 119             }
 120         }
 121     }
 122
 123     private String[] readTestParts(String testPath) throws IOException {
 124         InputStream stream = getClass().getResourceAsStream(testPath);
 125         try {
 126             byte[] buffer = new byte[1024];
 127             int pos = 0;
 128             while(true) {
 129                 int c = stream.read(buffer, pos, buffer.length-pos);
 130                 if(c <= 0)
 131                     break;
 132                 pos += c;
 133                 if(pos < buffer.length)
 134                     break;
 135                 buffer = Arrays.copyOf(buffer, pos*2);
 136             }
 137             String text = new String(buffer, 0, pos, UTF8);
 138             String[] result = TEST_SEPARATOR.split(text);
 139             for(int i=1;i<result.length;++i) {
 140                 if(result[i].startsWith("\r\n"))
 141                     result[i] = result[i].substring(2);
 142                 if(result[i].startsWith("\n") || result[i].startsWith("\r"))
 143                     result[i] = result[i].substring(1);
 144             }
 145             return result;
 146         } finally {
 147             stream.close();
 148         }
 149     }
 150 }