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