Automatic execution of SCL tests in Maven

[simantics/platform.git] / tests / org.simantics.scl.compiler.tests / src / org / simantics / scl / compiler / tests / TestBase.java

diff --git a/tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/TestBase.java b/tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/TestBase.java
new file mode 100644 (file)
index 0000000..05ffd75
--- /dev/null
+++ b/tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/TestBase.java
@@ -0,0 +1,138 @@
+package org.simantics.scl.compiler.tests;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.regex.Pattern;
+
+import org.junit.Assert;
+import org.simantics.scl.compiler.errors.Failable;
+import org.simantics.scl.compiler.errors.Failure;
+import org.simantics.scl.compiler.module.ImportDeclaration;
+import org.simantics.scl.compiler.module.Module;
+import org.simantics.scl.compiler.module.repository.ModuleRepository;
+import org.simantics.scl.compiler.module.repository.UpdateListener;
+import org.simantics.scl.compiler.source.ModuleSource;
+import org.simantics.scl.compiler.source.StringModuleSource;
+import org.simantics.scl.compiler.source.repository.CompositeModuleSourceRepository;
+import org.simantics.scl.compiler.source.repository.MapModuleSourceRepository;
+import org.simantics.scl.compiler.source.repository.SourceRepositories;
+import org.simantics.scl.compiler.top.ValueNotFound;
+
+public class TestBase {
+    
+    public static final ModuleRepository PRELUDE_MODULE_REPOSITORY = InitialRepository.getInitialRepository();
+    private static final Pattern TEST_SEPARATOR = Pattern.compile("^--+ *$", Pattern.MULTILINE);
+    private static final Charset UTF8 = Charset.forName("UTF-8");
+
+    String path;
+
+    public TestBase(String path) {
+        this.path = path;
+    }
+    
+    protected void test() {
+        String testModuleName = Thread.currentThread().getStackTrace()[2].getMethodName();
+        String testPath = path + "/" + testModuleName + ".scl";
+        
+        try {
+            String[] testParts = readTestParts(testPath);
+            
+            int j=0;
+            ArrayList<String> auxModuleNameList = new ArrayList<String>();
+            while(j < testParts.length) {
+                String part = testParts[j]; 
+                if(part.startsWith("// module "))
+                    auxModuleNameList.add(part.substring(10).split("\\n", 2)[0].trim());
+                else
+                    break;
+                ++j;
+            }
+            int mainId = j;
+            String[] moduleNames = new String[mainId+1];
+            String[] moduleTexts = new String[mainId+1];
+            for(int i=0;i<mainId;++i) {
+                moduleNames[i] = auxModuleNameList.get(i);
+                moduleTexts[i] = testParts[i];
+            }
+            moduleNames[mainId] = testModuleName;
+            
+            for(;j<testParts.length;j+=2) {
+                moduleTexts[mainId] = testParts[j];
+                String expectedOutput = j+1<testParts.length ? testParts[j+1] : "";
+                String actualOutput = test(moduleNames, moduleTexts);
+                Assert.assertEquals(
+                        canonicalizeOutput(expectedOutput),
+                        canonicalizeOutput(actualOutput));
+            }
+        } catch(IOException e) {
+            throw new RuntimeException(e);
+        } catch (ValueNotFound e) {
+            throw new RuntimeException(e);
+        }
+    }
+    
+    private static String canonicalizeOutput(String text) {
+        return text.trim().replace("\r\n", "\n");
+    }
+
+    protected String test(String[] moduleNames, String[] moduleTexts) throws ValueNotFound {
+        if(moduleNames.length != moduleTexts.length)
+            throw new IllegalArgumentException();
+        /*for(int i=0;i<moduleNames.length;++i) {
+            System.out.println("-- " + moduleNames[i] + " --");
+            System.out.println(moduleTexts[i]);
+        }*/
+        
+        ModuleSource[] moduleSources = new ModuleSource[moduleNames.length];
+        for(int i=0;i<moduleNames.length;++i)
+            moduleSources[i] = new StringModuleSource(
+                    moduleNames[i], getClass().getClassLoader(), moduleTexts[i]) {
+                @Override
+                protected ImportDeclaration[] getBuiltinImports(UpdateListener listener) {
+                    return ImportDeclaration.ONLY_BUILTINS;
+                }
+            };
+        ModuleRepository testEnvironment = new ModuleRepository(
+                PRELUDE_MODULE_REPOSITORY,
+                new MapModuleSourceRepository(moduleSources));
+        int lastId = moduleNames.length-1;
+        Failable<Module> result = testEnvironment.getModule(moduleNames[lastId]);
+        if(!result.didSucceed())
+            return ((Failure)result).toString(moduleTexts[lastId]);
+        else {
+            Object main = testEnvironment.getRuntimeModule(moduleNames[lastId]).getResult().getValue("main");
+            return String.valueOf(main);
+        }
+    }
+
+    private String[] readTestParts(String testPath) throws IOException {
+        InputStream stream = getClass().getResourceAsStream(testPath);
+        try {
+            byte[] buffer = new byte[1024];
+            int pos = 0;
+            while(true) {
+                int c = stream.read(buffer, pos, buffer.length-pos);
+                if(c <= 0)
+                    break;
+                pos += c;
+                if(pos < buffer.length)
+                    break;
+                buffer = Arrays.copyOf(buffer, pos*2);
+            }
+            String text = new String(buffer, 0, pos, UTF8);
+            String[] result = TEST_SEPARATOR.split(text);
+            for(int i=1;i<result.length;++i) {
+                if(result[i].startsWith("\r\n"))
+                    result[i] = result[i].substring(2);
+                if(result[i].startsWith("\n") || result[i].startsWith("\r"))
+                    result[i] = result[i].substring(1);
+            }
+            return result;
+        } finally {
+            stream.close();
+        }
+    }
+}