/*
* Copyright 2015 Google Inc.
*
* 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.common.css.compiler.passes;
import com.google.common.css.compiler.passes.testing.PassesTestBase;
/**
* Unit tests for {@link UnrollLoops}.
*/
public class UnrollLoopsTest extends PassesTestBase {
@Override
protected void runPass() {
new CreateDefinitionNodes(tree.getMutatingVisitController(), errorManager).runPass();
new CreateConstantReferences(tree.getMutatingVisitController()).runPass();
new CreateForLoopNodes(tree.getMutatingVisitController(), errorManager).runPass();
new UnrollLoops(tree.getMutatingVisitController(), errorManager).runPass();
}
public void testSimpleLoopUnroll() throws Exception {
testTreeConstruction(linesToString(
"@for $i from 1 to 3 {",
" .foo-$i {}",
"}"),
"[[.foo-1]{[]}[.foo-2]{[]}[.foo-3]{[]}]");
}
public void testNestedLoopUnroll() throws Exception {
testTreeConstruction(linesToString(
"@for $i from 1 to 3 {",
" @for $j from 1 to $i {",
" .foo-$i-$j {}",
" }",
"}"),
"[[.foo-1-1]{[]}[.foo-2-1]{[]}[.foo-2-2]{[]}[.foo-3-1]{[]}[.foo-3-2]{[]}[.foo-3-3]{[]}]");
}
public void testDefinitionRenaming() throws Exception {
testTreeConstruction(linesToString(
"@for $i from 1 to 2 {",
" @def FOO $i;",
" .foo {",
" top: FOO;",
" }",
"}"),
"[@def FOO__LOOP0__1 [[1]];[.foo]{[top:[[FOO__LOOP0__1]];]}"
+ "@def FOO__LOOP0__2 [[2]];[.foo]{[top:[[FOO__LOOP0__2]];]}]");
}
public void testUnevalutedConstants() throws Exception {
parseAndRun("@for $i from CONST to 2 {}", UnrollLoops.UNKNOWN_CONSTANT);
parseAndRun("@for $i from 1 to CONST {}", UnrollLoops.UNKNOWN_CONSTANT);
parseAndRun("@for $i from 1 to 2 step CONST {}", UnrollLoops.UNKNOWN_CONSTANT);
}
public void testUnevalutedVariable() throws Exception {
parseAndRun("@for $i from $j to 2 {}", UnrollLoops.UNKNOWN_VARIABLE);
parseAndRun("@for $i from 1 to $j {}", UnrollLoops.UNKNOWN_VARIABLE);
parseAndRun("@for $i from 1 to 2 step $j {}", UnrollLoops.UNKNOWN_VARIABLE);
}
}