FileMatchers.java

package org.test4j.hamcrest.matcher.file;

import java.io.File;
import java.io.IOException;

import ext.test4j.hamcrest.Description;
import ext.test4j.hamcrest.Matcher;
import ext.test4j.hamcrest.TypeSafeMatcher;
import ext.test4j.hamcrest.core.IsEqual;

@SuppressWarnings("rawtypes")
public class FileMatchers {
	public static Matcher<File> isDirectory() {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				return item.isDirectory();
			}

			public void describeTo(Description description) {
				description.appendText(" that ");
				description.appendValue(fileTested);
				description.appendText("is a directory");
			}
		};
	}

	public static Matcher<File> exists() {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				return item.exists();
			}

			public void describeTo(Description description) {
				description.appendText(" that file ");
				description.appendValue(fileTested);
				description.appendText(" exists");
			}
		};
	}

	public static Matcher<File> isFile() {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				return item.isFile();
			}

			public void describeTo(Description description) {
				description.appendText(" that ");
				description.appendValue(fileTested);
				description.appendText("is a file");
			}
		};
	}

	public static Matcher<File> readable() {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				return item.canRead();
			}

			public void describeTo(Description description) {
				description.appendText(" that file ");
				description.appendValue(fileTested);
				description.appendText("is readable");
			}
		};
	}

	public static Matcher<File> writable() {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				return item.canWrite();
			}

			public void describeTo(Description description) {
				description.appendText(" that file ");
				description.appendValue(fileTested);
				description.appendText("is writable");
			}
		};
	}

	public static Matcher<File> sized(long size) {
		Matcher matcher = IsEqual.equalTo(size);
		return sized(matcher);
	}

	public static Matcher<File> sized(final Matcher matcher) {
		return new TypeSafeMatcher<File>() {
			File fileTested;
			long length;

			public boolean matchesSafely(File item) {
				fileTested = item;
				length = item.length();
				return matcher.matches(length);
			}

			public void describeTo(Description description) {
				description.appendText(" that file ");
				description.appendValue(fileTested);
				description.appendText(" is sized ");
				description.appendDescriptionOf(matcher);
				description.appendText(", not " + length);
			}
		};
	}

	public static Matcher<File> nameEq(final String name) {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				String filename = item == null ? null : item.getName();
				return name.equals(filename);
			}

			public void describeTo(Description description) {
				description.appendText(" that file name of ");
				description.appendValue(fileTested);
				description.appendText(" expected equals to ");
				description.appendValue(name);
				description.appendText(", but actual not!");
			}
		};
	}

	public static Matcher<File> nameContain(final String name) {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				String filename = item == null ? null : item.getName();
				return filename != null && filename.indexOf(name) != -1;
			}

			public void describeTo(Description description) {
				description.appendText(" that file name of ");
				description.appendValue(fileTested);
				description.appendText(" expected to contain ");
				description.appendValue(name);
				description.appendText(", but actual not!");
			}
		};
	}

	public static Matcher<File> named(final Matcher<String> name) {
		return new TypeSafeMatcher<File>() {
			File fileTested;

			public boolean matchesSafely(File item) {
				fileTested = item;
				return name.matches(item.getName());
			}

			public void describeTo(Description description) {
				description.appendText(" that file ");
				description.appendValue(fileTested);
				description.appendText(" is named");
				description.appendDescriptionOf(name);
				description.appendText(" not ");
				description.appendValue(fileTested.getName());
			}
		};
	}

	public static Matcher<File> withCanonicalPath(final Matcher<String> path) {
		return new TypeSafeMatcher<File>() {
			public boolean matchesSafely(File item) {
				try {
					return path.matches(item.getCanonicalPath());
				} catch (IOException e) {
					return false;
				}
			}

			public void describeTo(Description description) {
				description.appendText("with canonical path '");
				description.appendDescriptionOf(path);
				description.appendText("'");
			}
		};
	}

	public static Matcher<File> withAbsolutePath(final Matcher path) {
		return new TypeSafeMatcher<File>() {
			public boolean matchesSafely(File item) {
				// fileTested = item;
				return path.matches(item.getAbsolutePath());
			}

			public void describeTo(Description description) {
				description.appendText("with absolute path '");
				description.appendDescriptionOf(path);
				description.appendText("'");
			}
		};
	}
}