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CompilerTest.java
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CompilerTest.java
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/*
* Copyright 2010 The Closure Compiler Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.javascript.jscomp;
import static com.google.common.truth.Truth.assertThat;
import static com.google.javascript.jscomp.CompilerTestCase.LINE_JOINER;
import static java.nio.charset.StandardCharsets.UTF_8;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.io.Files;
import com.google.debugging.sourcemap.FilePosition;
import com.google.debugging.sourcemap.SourceMapConsumerV3;
import com.google.debugging.sourcemap.SourceMapGeneratorV3;
import com.google.debugging.sourcemap.proto.Mapping.OriginalMapping;
import com.google.javascript.jscomp.CompilerOptions.LanguageMode;
import com.google.javascript.jscomp.deps.ModuleLoader;
import com.google.javascript.rhino.IR;
import com.google.javascript.rhino.InputId;
import com.google.javascript.rhino.Node;
import com.google.javascript.rhino.Token;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import junit.framework.TestCase;
/**
* @author johnlenz@google.com (John Lenz)
*/
public final class CompilerTest extends TestCase {
// Verify the line and column information is maintained after a reset
public void testCodeBuilderColumnAfterReset() {
Compiler.CodeBuilder cb = new Compiler.CodeBuilder();
String js = "foo();\ngoo();";
cb.append(js);
assertEquals(js, cb.toString());
assertEquals(1, cb.getLineIndex());
assertEquals(6, cb.getColumnIndex());
cb.reset();
assertThat(cb.toString()).isEmpty();
assertEquals(1, cb.getLineIndex());
assertEquals(6, cb.getColumnIndex());
}
public void testCodeBuilderAppend() {
Compiler.CodeBuilder cb = new Compiler.CodeBuilder();
cb.append("foo();");
assertEquals(0, cb.getLineIndex());
assertEquals(6, cb.getColumnIndex());
cb.append("goo();");
assertEquals(0, cb.getLineIndex());
assertEquals(12, cb.getColumnIndex());
// newline reset the column index
cb.append("blah();\ngoo();");
assertEquals(1, cb.getLineIndex());
assertEquals(6, cb.getColumnIndex());
}
public void testCyclicalDependencyInInputs() {
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode(
"gin", "goog.provide('gin'); goog.require('tonic'); var gin = {};"),
SourceFile.fromCode("tonic",
"goog.provide('tonic'); goog.require('gin'); var tonic = {};"),
SourceFile.fromCode(
"mix", "goog.require('gin'); goog.require('tonic');"));
CompilerOptions options = new CompilerOptions();
options.setIdeMode(true);
options.setManageClosureDependencies(true);
Compiler compiler = new Compiler();
compiler.init(ImmutableList.<SourceFile>of(), inputs, options);
compiler.parseInputs();
assertEquals(compiler.externAndJsRoot, compiler.jsRoot.getParent());
assertEquals(compiler.externAndJsRoot, compiler.externsRoot.getParent());
assertNotNull(compiler.externAndJsRoot);
Node jsRoot = compiler.jsRoot;
assertEquals(3, jsRoot.getChildCount());
}
public void testPrintExterns() {
List<SourceFile> externs =
ImmutableList.of(SourceFile.fromCode("extern", "function alert(x) {}"));
CompilerOptions options = new CompilerOptions();
options.setLanguageIn(LanguageMode.ECMASCRIPT3);
options.setPrintExterns(true);
Compiler compiler = new Compiler();
compiler.init(externs, ImmutableList.<SourceFile>of(), options);
compiler.parseInputs();
assertThat(compiler.toSource()).isEqualTo("/** @externs */\nfunction alert(x){};");
}
public void testLocalUndefined() throws Exception {
// Some JavaScript libraries like to create a local instance of "undefined",
// to ensure that other libraries don't try to overwrite it.
//
// Most of the time, this is OK, because normalization will rename
// that variable to undefined$$1. But this won't happen if they don't
// include the default externs.
//
// This test is just to make sure that the compiler doesn't crash.
CompilerOptions options = new CompilerOptions();
CompilationLevel.SIMPLE_OPTIMIZATIONS.setOptionsForCompilationLevel(options);
Compiler compiler = new Compiler();
SourceFile externs = SourceFile.fromCode("externs.js", "");
SourceFile input = SourceFile.fromCode("input.js",
"(function (undefined) { alert(undefined); })();");
compiler.compile(externs, input, options);
}
public void testCommonJSMissingRequire() throws Exception {
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("/gin.js", "require('missing')"));
Compiler compiler = initCompilerForCommonJS(
inputs, ImmutableList.of(ModuleIdentifier.forFile("/gin")));
ErrorManager manager = compiler.getErrorManager();
JSError[] errors = manager.getErrors();
assertThat(errors).hasLength(1);
String error = errors[0].toString();
assertThat(error).contains("Failed to load module \"missing\" at /gin.js");
}
private static String normalize(String path) {
return path.replace(File.separator, "/");
}
public void testInputSourceMaps() throws Exception {
FilePosition originalSourcePosition = new FilePosition(17, 25);
ImmutableMap<String, SourceMapInput> inputSourceMaps = ImmutableMap.of(
normalize("generated_js/example.js"),
sourcemap(
normalize("generated_js/example.srcmap"),
normalize("../original/source.html"),
originalSourcePosition));
String origSourceName = normalize("original/source.html");
List<SourceFile> originalSources = ImmutableList.of(
SourceFile.fromCode(origSourceName, "<div ng-show='foo()'>"));
CompilerOptions options = new CompilerOptions();
options.inputSourceMaps = inputSourceMaps;
Compiler compiler = new Compiler();
compiler.init(new ArrayList<SourceFile>(), originalSources, options);
assertEquals(
OriginalMapping.newBuilder()
.setOriginalFile(origSourceName)
.setLineNumber(18)
.setColumnPosition(25)
.setIdentifier("testSymbolName")
.build(),
compiler.getSourceMapping(normalize("generated_js/example.js"), 3, 3));
assertEquals("<div ng-show='foo()'>", compiler.getSourceLine(origSourceName, 1));
}
private SourceMapInput sourcemap(String sourceMapPath, String originalSource,
FilePosition originalSourcePosition) throws Exception {
SourceMapGeneratorV3 sourceMap = new SourceMapGeneratorV3();
sourceMap.addMapping(originalSource, "testSymbolName", originalSourcePosition,
new FilePosition(1, 1), new FilePosition(100, 1));
StringBuilder output = new StringBuilder();
sourceMap.appendTo(output, "unused.js");
return new SourceMapInput(SourceFile.fromCode(sourceMapPath, output.toString()));
}
private static final String SOURCE_MAP_TEST_CODE =
Joiner.on("\n")
.join(
"var X = (function () {",
" function X(input) {",
" this.y = input;",
" }",
" return X;",
"}());",
"console.log(new X(1));");
private static final String SOURCE_MAP =
"{\"version\":3,\"file\":\"foo.js\",\"sourceRoot\":\"\",\"sources\":[\"foo.ts\"],\"names\":[],\"mappings\":\"AAAA;IAGE,WAAY,KAAa;QACvB,IAAI,CAAC,CAAC,GAAG,KAAK,CAAC;IACjB,CAAC;IACH,QAAC;AAAD,CAAC,AAND,IAMC;AAED,OAAO,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC\"}";
private static final String BASE64_ENCODED_SOURCE_MAP =
"data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZm9vLmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsiZm9vLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiJBQUFBO0lBR0UsV0FBWSxLQUFhO1FBQ3ZCLElBQUksQ0FBQyxDQUFDLEdBQUcsS0FBSyxDQUFDO0lBQ2pCLENBQUM7SUFDSCxRQUFDO0FBQUQsQ0FBQyxBQU5ELElBTUM7QUFFRCxPQUFPLENBQUMsR0FBRyxDQUFDLElBQUksQ0FBQyxDQUFDLENBQUMsQ0FBQyxDQUFDLENBQUMifQ==";
public void testInputSourceMapInline() throws Exception {
Compiler compiler = new Compiler();
compiler.initCompilerOptionsIfTesting();
String code = SOURCE_MAP_TEST_CODE + "\n//# sourceMappingURL=" + BASE64_ENCODED_SOURCE_MAP;
CompilerInput input = new CompilerInput(SourceFile.fromCode("tmp", code));
input.getAstRoot(compiler);
SourceMapInput inputSourceMap = compiler.inputSourceMaps.get("tmp");
SourceMapConsumerV3 sourceMap = inputSourceMap.getSourceMap(null);
assertThat(sourceMap.getOriginalSources()).containsExactly("foo.ts");
}
public void testResolveRelativeSourceMap() throws Exception {
Compiler compiler = new Compiler();
compiler.initCompilerOptionsIfTesting();
File tempDir = Files.createTempDir();
String code = SOURCE_MAP_TEST_CODE + "\n//# sourceMappingURL=foo.js.map";
File jsFile = new File(tempDir, "foo.js");
Files.asCharSink(jsFile, UTF_8).write(code);
File sourceMapFile = new File(tempDir, "foo.js.map");
Files.asCharSink(sourceMapFile, UTF_8).write(SOURCE_MAP);
CompilerInput input = new CompilerInput(SourceFile.fromFile(jsFile.getAbsolutePath()));
input.getAstRoot(compiler);
// The source map is still
assertThat(compiler.inputSourceMaps).hasSize(1);
for (SourceMapInput inputSourceMap : compiler.inputSourceMaps.values()) {
SourceMapConsumerV3 sourceMap = inputSourceMap.getSourceMap(null);
assertThat(sourceMap.getOriginalSources()).containsExactly("foo.ts");
}
}
// Make sure that the sourcemap resolution can find a sourcemap in a relative directory.
public void testResolveRelativeDirSourceMap() throws Exception {
Compiler compiler = new Compiler();
compiler.initCompilerOptionsIfTesting();
File tempDir = Files.createTempDir();
File relativedir = new File(tempDir, "/relativedir");
relativedir.mkdir();
String code = SOURCE_MAP_TEST_CODE + "\n//# sourceMappingURL=relativedir/foo.js.map";
File jsFile = new File(tempDir, "foo.js");
Files.asCharSink(jsFile, UTF_8).write(code);
File sourceMapFile = new File(relativedir, "foo.js.map");
Files.asCharSink(sourceMapFile, UTF_8).write(SOURCE_MAP);
CompilerInput input = new CompilerInput(SourceFile.fromFile(jsFile.getAbsolutePath()));
input.getAstRoot(compiler);
// The source map is still
assertThat(compiler.inputSourceMaps).hasSize(1);
for (SourceMapInput inputSourceMap : compiler.inputSourceMaps.values()) {
SourceMapConsumerV3 sourceMap = inputSourceMap.getSourceMap(null);
assertThat(sourceMap.getOriginalSources()).containsExactly("foo.ts");
}
}
public void testMissingSourceMapFile() throws Exception {
Compiler compiler = new Compiler();
compiler.initCompilerOptionsIfTesting();
File tempDir = Files.createTempDir();
String code = SOURCE_MAP_TEST_CODE + "\n//# sourceMappingURL=foo-does-not-exist.js.map";
File jsFile = new File(tempDir, "foo2.js");
Files.asCharSink(jsFile, UTF_8).write(code);
CompilerInput input = new CompilerInput(SourceFile.fromFile(jsFile.getAbsolutePath()));
input.getAstRoot(compiler);
assertThat(compiler.inputSourceMaps).hasSize(1);
TestErrorManager errorManager = new TestErrorManager();
for (SourceMapInput inputSourceMap : compiler.inputSourceMaps.values()) {
SourceMapConsumerV3 sourceMap = inputSourceMap.getSourceMap(errorManager);
assertNull(sourceMap);
}
// WARNING: Failed to resolve input sourcemap: foo-does-not-exist.js.map
assertEquals(1, errorManager.getWarningCount());
}
public void testNoWarningMissingAbsoluteSourceMap() throws Exception {
TestErrorManager errorManager = new TestErrorManager();
Compiler compiler = new Compiler(errorManager);
compiler.initCompilerOptionsIfTesting();
File tempDir = Files.createTempDir();
String code = SOURCE_MAP_TEST_CODE + "\n//# sourceMappingURL=/some/missing/path/foo.js.map";
File jsFile = new File(tempDir, "foo.js");
Files.asCharSink(jsFile, UTF_8).write(code);
CompilerInput input = new CompilerInput(SourceFile.fromFile(jsFile.getAbsolutePath()));
input.getAstRoot(compiler);
// The source map is still
assertThat(compiler.inputSourceMaps).isEmpty();
// No warnings for unresolved absolute paths.
assertEquals(0, errorManager.getWarningCount());
}
public void testApplyInputSourceMaps() throws Exception {
FilePosition originalSourcePosition = new FilePosition(17, 25);
ImmutableMap<String, SourceMapInput> inputSourceMaps = ImmutableMap.of(
"input.js",
sourcemap(
"input.js.map",
"input.ts",
originalSourcePosition));
CompilerOptions options = new CompilerOptions();
options.setLanguageIn(LanguageMode.ECMASCRIPT3);
options.sourceMapOutputPath = "fake/source_map_path.js.map";
options.inputSourceMaps = inputSourceMaps;
options.applyInputSourceMaps = true;
Compiler compiler = new Compiler();
compiler.compile(EMPTY_EXTERNS.get(0),
SourceFile.fromCode("input.js", "// Unmapped line\nvar x = 1;\nalert(x);"), options);
assertThat(compiler.toSource()).isEqualTo("var x=1;alert(x);");
SourceMap sourceMap = compiler.getSourceMap();
StringWriter out = new StringWriter();
sourceMap.appendTo(out, "source.js.map");
SourceMapConsumerV3 consumer = new SourceMapConsumerV3();
consumer.parse(out.toString());
// Column 5 contains the first actually mapped code ('x').
OriginalMapping mapping = consumer.getMappingForLine(1, 5);
assertThat(mapping.getOriginalFile()).isEqualTo("input.ts");
// FilePosition above is 0-based, whereas OriginalMapping is 1-based, thus 18 & 26.
assertThat(mapping.getLineNumber()).isEqualTo(18);
assertThat(mapping.getColumnPosition()).isEqualTo(26);
assertThat(mapping.getIdentifier()).isEqualTo("testSymbolName");
}
private Compiler initCompilerForCommonJS(
List<SourceFile> inputs, List<ModuleIdentifier> entryPoints)
throws Exception {
CompilerOptions options = new CompilerOptions();
options.setIdeMode(true);
options.dependencyOptions.setDependencyPruning(true);
options.dependencyOptions.setMoocherDropping(true);
options.dependencyOptions.setEntryPoints(entryPoints);
options.setProcessCommonJSModules(true);
options.setModuleResolutionMode(ModuleLoader.ResolutionMode.NODE);
Compiler compiler = new Compiler();
compiler.init(new ArrayList<SourceFile>(), inputs, options);
compiler.parseInputs();
return compiler;
}
private static final ImmutableList<SourceFile> EMPTY_EXTERNS =
ImmutableList.of(SourceFile.fromCode("externs", ""));
/**
* Ensure that the printInputDelimiter option adds a "// Input #" comment
* at the start of each "script" in the compiled output.
*/
public void testInputDelimiters() throws Exception {
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
options.setPrintInputDelimiter(true);
String fileOverview = "/** @fileoverview Foo */";
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("i1", ""),
SourceFile.fromCode("i2", fileOverview));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(result.success);
String outputSource = compiler.toSource();
System.err.println("Output:\n[" + outputSource + "]");
assertEquals("// Input 0\n// Input 1\n", outputSource);
}
/**
* Make sure that non-standard JSDoc annotation is not a hard error
* unless it is specified.
*/
public void testBug2176967Default() {
final String badJsDoc = "/** @XYZ */\n var x";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
// Default is warning.
compiler.compile(SourceFile.fromCode("extern.js", ""),
SourceFile.fromCode("test.js", badJsDoc), options);
assertEquals(1, compiler.getWarningCount());
assertEquals(0, compiler.getErrorCount());
}
/**
* Make sure that non-standard JSDoc annotation is not a hard error nor
* warning when it is off.
*/
public void testBug2176967Off() {
final String badJsDoc = "/** @XYZ */\n var x";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
options.setWarningLevel(
DiagnosticGroups.NON_STANDARD_JSDOC, CheckLevel.OFF);
compiler.compile(SourceFile.fromCode("extern.js", ""),
SourceFile.fromCode("test.js", badJsDoc), options);
assertEquals(0, compiler.getWarningCount());
assertEquals(0, compiler.getErrorCount());
}
/**
* Make sure the non-standard JSDoc diagnostic group gives out an error
* when it is set to check level error.
*/
public void testBug2176967Error() {
final String badJsDoc = "/** @XYZ */\n var x";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
options.setWarningLevel(
DiagnosticGroups.NON_STANDARD_JSDOC, CheckLevel.ERROR);
compiler.compile(SourceFile.fromCode("extern.js", ""),
SourceFile.fromCode("test.js", badJsDoc), options);
assertEquals(0, compiler.getWarningCount());
assertEquals(1, compiler.getErrorCount());
}
public void testNormalInputs() {
CompilerOptions options = new CompilerOptions();
Compiler compiler = new Compiler();
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("in1", ""),
SourceFile.fromCode("in2", ""));
compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(compiler.getInput(new InputId("externs")).isExtern());
assertFalse(compiler.getInput(new InputId("in1")).isExtern());
assertFalse(compiler.getInput(new InputId("in2")).isExtern());
}
public void testRebuildInputsFromModule() {
List<JSModule> modules = ImmutableList.of(
new JSModule("m1"), new JSModule("m2"));
modules.get(0).add(SourceFile.fromCode("in1", ""));
modules.get(1).add(SourceFile.fromCode("in2", ""));
Compiler compiler = new Compiler();
compiler.initModules(
ImmutableList.<SourceFile>of(), modules, new CompilerOptions());
modules.get(1).add(SourceFile.fromCode("in3", ""));
assertNull(compiler.getInput(new InputId("in3")));
compiler.rebuildInputsFromModules();
assertNotNull(compiler.getInput(new InputId("in3")));
}
public void testMalformedFunctionInExterns() throws Exception {
// Just verify that no exceptions are thrown (see bug 910619).
new Compiler().compile(
ImmutableList.of(SourceFile.fromCode("externs", "function f {}")),
ImmutableList.of(SourceFile.fromCode("foo", "")),
new CompilerOptions());
}
public void testGetSourceInfoInExterns() throws Exception {
// Just verify that no exceptions are thrown (see bug 910619).
Compiler compiler = new Compiler();
compiler.compile(
ImmutableList.of(SourceFile.fromCode("externs", "function f() {}\n")),
ImmutableList.of(SourceFile.fromCode("foo", "function g() {}\n")),
new CompilerOptions());
assertEquals("function f() {}", compiler.getSourceLine("externs", 1));
assertEquals("function g() {}", compiler.getSourceLine("foo", 1));
assertEquals(null, compiler.getSourceLine("bar", 1));
}
public void testFileoverviewTwice() throws Exception {
List<SourceFile> input = ImmutableList.of(
SourceFile.fromCode("foo",
"/** @fileoverview */ var x; /** @fileoverview */ var y;"));
assertTrue(
(new Compiler()).compile(
EMPTY_EXTERNS, input, new CompilerOptions()).success);
}
// Make sure we correctly output license text.
public void testImportantCommentOutput() throws Exception {
test(
"/*! Your favorite license goes here */ var x;",
"/*\n Your favorite license goes here */\n",
null);
}
// Make sure we output license text even if followed by @fileoverview.
public void testImportantCommentAndOverviewDirectiveWarning() throws Exception {
List<SourceFile> input =
ImmutableList.of(
SourceFile.fromCode(
"foo",
("/*! Your favorite license goes here */\n"
+ "/** \n"
+ " * @fileoverview This is my favorite file! */\n"
+ "var x;")));
assertTrue(
(new Compiler()).compile(
EMPTY_EXTERNS, input, new CompilerOptions()).success);
}
// Text for the opposite order - @fileoverview, then @license.
public void testOverviewAndImportantCommentOutput() throws Exception {
test(
"/** @fileoverview This is my favorite file! */\n"
+ "/*! Your favorite license goes here */\n"
+ "var x;",
"/*\n Your favorite license goes here */\n",
null);
}
// Test for sequence of @license and @fileoverview, and make sure
// all the licenses get copied over.
public void testImportantCommentOverviewImportantComment() throws Exception {
test(
"/*! Another license */\n"
+ "/** @fileoverview This is my favorite file! */\n"
+ "/*! Your favorite license goes here */\n"
+ "var x;",
"/*\n Another license Your favorite license goes here */\n",
null);
}
// Make sure things work even with @license and @fileoverview in the
// same comment.
public void testCombinedImportantCommentOverviewDirectiveOutput() throws Exception {
test(
"/*! Your favorite license goes here\n"
+ " * @fileoverview This is my favorite file! */\n"
+ "var x;",
"/*\n Your favorite license goes here\n" + " @fileoverview This is my favorite file! */\n",
null);
}
// Does the presence of @author change anything with the license?
public void testCombinedImportantCommentAuthorDirectiveOutput() throws Exception {
test(
"/*! Your favorite license goes here\n" + " * @author Robert */\n" + "var x;",
"/*\n Your favorite license goes here\n @author Robert */\n",
null);
}
// Make sure we concatenate licenses the same way.
public void testMultipleImportantCommentDirectiveOutput() throws Exception {
test(
"/*! Your favorite license goes here */\n" + "/*! Another license */\n" + "var x;",
"/*\n Your favorite license goes here Another license */\n",
null);
}
public void testImportantCommentLicenseDirectiveOutput() throws Exception {
test(
"/*! Your favorite license goes here */\n" + "/** @license Another license */\n" + "var x;",
"/*\n Another license Your favorite license goes here */\n",
null);
}
public void testLicenseImportantCommentDirectiveOutput() throws Exception {
test(
"/** @license Your favorite license goes here */\n" + "/*! Another license */\n" + "var x;",
"/*\n Your favorite license goes here Another license */\n",
null);
}
// Do we correctly handle the license if it's not at the top level, but
// inside another declaration?
public void testImportantCommentInTree() throws Exception {
test(
"var a = function() {\n +" + "/*! Your favorite license goes here */\n" + " 1;};\n",
"/*\n Your favorite license goes here */\n",
null);
}
public void testMultipleUniqueImportantComments() throws Exception {
String js1 = "/*! One license here */\n" + "var x;";
String js2 = "/*! Another license here */\n" + "var y;";
String expected = "/*\n One license here */\n" + "/*\n Another license here */\n";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
List<SourceFile> inputs =
ImmutableList.of(
SourceFile.fromCode("testcode1", js1), SourceFile.fromCode("testcode2", js2));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(Joiner.on(",").join(result.errors), result.success);
assertEquals(expected, compiler.toSource());
}
public void testMultipleIdenticalImportantComments() throws Exception {
String js1 = "/*! Identical license here */\n" + "var x;";
String js2 = "/*! Identical license here */\n" + "var y;";
String expected = "/*\n Identical license here */\n";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
List<SourceFile> inputs =
ImmutableList.of(
SourceFile.fromCode("testcode1", js1), SourceFile.fromCode("testcode2", js2));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(Joiner.on(",").join(result.errors), result.success);
assertEquals(expected, compiler.toSource());
}
// Make sure we correctly output license text.
public void testLicenseDirectiveOutput() throws Exception {
test(
"/** @license Your favorite license goes here */ var x;",
"/*\n Your favorite license goes here */\n",
null);
}
// Make sure we output license text even if followed by @fileoverview.
public void testLicenseAndOverviewDirectiveWarning() throws Exception {
List<SourceFile> input =
ImmutableList.of(
SourceFile.fromCode(
"foo",
("/** @license Your favorite license goes here */\n"
+ "/** \n"
+ " * @fileoverview This is my favorite file! */\n"
+ "var x;")));
assertTrue((new Compiler()).compile(EMPTY_EXTERNS, input, new CompilerOptions()).success);
}
// Text for the opposite order - @fileoverview, then @license.
public void testOverviewAndLicenseDirectiveOutput() throws Exception {
test(
"/** @fileoverview This is my favorite file! */\n"
+ "/** @license Your favorite license goes here */\n"
+ "var x;",
"/*\n Your favorite license goes here */\n",
null);
}
// Test for sequence of @license and @fileoverview, and make sure
// all the licenses get copied over.
public void testLicenseOverviewLicense() throws Exception {
test(
"/** @license Another license */\n"
+ "/** @fileoverview This is my favorite file! */\n"
+ "/** @license Your favorite license goes here */\n"
+ "var x;",
"/*\n Your favorite license goes here Another license */\n",
null);
}
// Make sure things work even with @license and @fileoverview in the
// same comment.
public void testCombinedLicenseOverviewDirectiveOutput() throws Exception {
test(
"/** @license Your favorite license goes here\n"
+ " * @fileoverview This is my favorite file! */\n"
+ "var x;",
"/*\n Your favorite license goes here\n" + " @fileoverview This is my favorite file! */\n",
null);
}
// Does the presence of @author change anything with the license?
public void testCombinedLicenseAuthorDirectiveOutput() throws Exception {
test(
"/** @license Your favorite license goes here\n" + " * @author Robert */\n" + "var x;",
"/*\n Your favorite license goes here\n @author Robert */\n",
null);
}
// Make sure we concatenate licenses the same way.
public void testMultipleLicenseDirectiveOutput() throws Exception {
test(
LINE_JOINER.join(
"/** @license Your favorite license goes here */",
"/** @license Another license */",
"var x;"),
"/*\n Another license Your favorite license goes here */\n" ,
null);
}
// Same thing, two @licenses in the same comment.
public void testTwoLicenseInSameComment() throws Exception {
test(
LINE_JOINER.join(
"/** @license Your favorite license goes here ",
" * @license Another license */",
"var x;"),
"/*\n Your favorite license goes here \n @license Another license */\n",
null);
}
// Do we correctly handle the license if it's not at the top level, but
// inside another declaration?
public void testLicenseInTree() throws Exception {
test(
LINE_JOINER.join(
"var a = function() {",
"+ /** @license Your favorite license goes here */",
" 1;};"),
"/*\n Your favorite license goes here */\n",
null);
}
public void testMultipleUniqueLicenses() throws Exception {
String js1 = "/** @license One license here */\n"
+ "var x;";
String js2 = "/** @license Another license here */\n"
+ "var y;";
String expected = "/*\n One license here */\n"
+ "/*\n Another license here */\n";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("testcode1", js1),
SourceFile.fromCode("testcode2", js2));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(Joiner.on(",").join(result.errors), result.success);
assertEquals(expected, compiler.toSource());
}
public void testMultipleIdenticalLicenses() throws Exception {
String js1 = "/** @license Identical license here */\n"
+ "var x;";
String js2 = "/** @license Identical license here */\n"
+ "var y;";
String js3 = "/** @license Identical license here */\n"
+ "var z;\n"
+ "/** @license Identical license here */";
String expected = "/*\n Identical license here */\n";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("testcode1", js1),
SourceFile.fromCode("testcode2", js2),
SourceFile.fromCode("bundled", js3));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(Joiner.on(",").join(result.errors), result.success);
assertEquals(expected, compiler.toSource());
}
public void testIdenticalLicenseAndImportantComment() throws Exception {
String js1 = "/** @license Identical license here */\n" + "var x;";
String js2 = "/*! Identical license here */\n" + "var y;";
String expected = "/*\n Identical license here */\n";
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
List<SourceFile> inputs =
ImmutableList.of(
SourceFile.fromCode("testcode1", js1), SourceFile.fromCode("testcode2", js2));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(Joiner.on(",").join(result.errors), result.success);
assertEquals(expected, compiler.toSource());
}
public void testDefineNoOverriding() throws Exception {
Map<String, Node> emptyMap = new HashMap<>();
List<String> defines = new ArrayList<>();
assertDefineOverrides(emptyMap, defines);
}
public void testDefineOverriding1() throws Exception {
List<String> defines =
ImmutableList.of(
"COMPILED",
"DEF_TRUE=true",
"DEF_FALSE=false",
"DEF_NUMBER=5.5",
"DEF_STRING='bye'");
Map<String, Node> expected = ImmutableMap.of(
"COMPILED", new Node(Token.TRUE),
"DEF_TRUE", new Node(Token.TRUE),
"DEF_FALSE", new Node(Token.FALSE),
"DEF_NUMBER", Node.newNumber(5.5),
"DEF_STRING", Node.newString("bye"));
assertDefineOverrides(expected, defines);
}
public void testDefineOverriding2() throws Exception {
List<String> defines = ImmutableList.of("DEF_STRING='='");
Map<String, Node> expected = ImmutableMap.of(
"DEF_STRING", Node.newString("="));
assertDefineOverrides(expected, defines);
}
public void testDefineOverriding3() throws Exception {
List<String> defines = ImmutableList.of("a.DEBUG");
Map<String, Node> expected = ImmutableMap.of(
"a.DEBUG", new Node(Token.TRUE));
assertDefineOverrides(expected, defines);
}
public void testBadDefineOverriding1() throws Exception {
List<String> defines = ImmutableList.of("DEF_STRING=");
assertCreateDefinesThrowsException(defines);
}
public void testBadDefineOverriding2() throws Exception {
List<String> defines = ImmutableList.of("=true");
assertCreateDefinesThrowsException(defines);
}
public void testBadDefineOverriding3() throws Exception {
List<String> defines = ImmutableList.of("DEF_STRING='''");
assertCreateDefinesThrowsException(defines);
}
static void assertCreateDefinesThrowsException(List<String> defines) {
try {
CompilerOptions options = new CompilerOptions();
AbstractCommandLineRunner.createDefineOrTweakReplacements(defines,
options, false);
} catch (RuntimeException e) {
return;
}
fail(defines + " didn't fail");
}
static void assertDefineOverrides(Map<String, Node> expected,
List<String> defines) {
CompilerOptions options = new CompilerOptions();
AbstractCommandLineRunner.createDefineOrTweakReplacements(defines, options,
false);
Map<String, Node> actual = options.getDefineReplacements();
// equality of nodes compares by reference, so instead,
// compare the maps manually using Node.checkTreeEqualsSilent
assertThat(actual).hasSize(expected.size());
for (Map.Entry<String, Node> entry : expected.entrySet()) {
assertTrue(entry.getKey(), actual.containsKey(entry.getKey()));
Node actualNode = actual.get(entry.getKey());
assertTrue(entry.toString(),
entry.getValue().isEquivalentTo(actualNode));
}
}
static Result test(String js, String expected, DiagnosticType error) {
Compiler compiler = new Compiler();
CompilerOptions options = createNewFlagBasedOptions();
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("testcode", js));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
if (error == null) {
assertTrue(Joiner.on(",").join(result.errors), result.success);
String outputSource = compiler.toSource();
assertEquals(expected, outputSource);
} else {
assertThat(result.errors).hasLength(1);
assertEquals(error, result.errors[0].getType());
}
return result;
}
public void testConsecutiveSemicolons() {
Compiler compiler = new Compiler();
CompilerOptions options = new CompilerOptions();
options.setEmitUseStrict(false);
compiler.initOptions(options);
String js = "if(a);";
Node n = compiler.parseTestCode(js);
Compiler.CodeBuilder cb = new Compiler.CodeBuilder();
compiler.toSource(cb, 0, n);
assertEquals(js, cb.toString());
}
public void testWarningsFiltering() {
// Warnings and errors are left alone when no filtering is used
assertTrue(hasOutput(
null,
"foo/bar.js",
CheckLevel.WARNING));
assertTrue(hasOutput(
null,
"foo/bar.js",
CheckLevel.ERROR));
// Warnings (but not errors) get filtered out
assertFalse(hasOutput(
"baz",
"foo/bar.js",
CheckLevel.WARNING));
assertTrue(hasOutput(
"foo",
"foo/bar.js",
CheckLevel.WARNING));
assertTrue(hasOutput(
"baz",
"foo/bar.js",
CheckLevel.ERROR));
assertTrue(hasOutput(
"foo",
"foo/bar.js",
CheckLevel.ERROR));
}
public void testExportSymbolReservesNamesForRenameVars() {
Compiler compiler = new Compiler();
CompilerOptions options = new CompilerOptions();
options.setEmitUseStrict(false);
options.setClosurePass(true);
options.setVariableRenaming(VariableRenamingPolicy.ALL);
String js = "var goog, x; goog.exportSymbol('a', x);";
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("testcode", js));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(result.success);
assertThat(compiler.toSource()).isEqualTo("var b;var c;b.exportSymbol(\"a\",c);");
}
public void testGenerateExportsReservesNames() {
Compiler compiler = new Compiler();
CompilerOptions options = new CompilerOptions();
options.setEmitUseStrict(false);
options.setClosurePass(true);
options.setVariableRenaming(VariableRenamingPolicy.ALL);
options.setGenerateExports(true);
String js = "var goog; /** @export */ var a={};";
List<SourceFile> inputs = ImmutableList.of(
SourceFile.fromCode("testcode", js));
Result result = compiler.compile(EMPTY_EXTERNS, inputs, options);
assertTrue(result.success);
assertThat(compiler.toSource()).isEqualTo("var b;var c={};b.exportSymbol(\"a\",c);");
}
private static final DiagnosticType TEST_ERROR =
DiagnosticType.error("TEST_ERROR", "Test error");
/**
* Simple error manager that tracks whether anything was reported/output.
*/
private static class TestErrorManager implements ErrorManager {
private boolean output = false;
private int warningCount = 0;
private int errorCount = 0;
@Override
public void report(CheckLevel level, JSError error) {
output = true;
if (level == CheckLevel.WARNING) {
warningCount++;
}
if (level == CheckLevel.ERROR) {
errorCount++;
}
}
// Methods we don't care about
@Override public void generateReport() {}
@Override
public int getErrorCount() {
return errorCount;
}
@Override
public int getWarningCount() {
return warningCount;
}
@Override
public JSError[] getErrors() {
return null;
}
@Override
public JSError[] getWarnings() {
return null;
}
@Override public void setTypedPercent(double typedPercent) {}
@Override
public double getTypedPercent() {
return 0.0;