IniTest.java

/***************************************************************************
   Copyright 2015 Emily Estes

   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 net.metanotion.util;


import java.io.File;
import java.io.StringReader;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import javax.inject.Named;

public final class IniTest {
    private static void assertTrue(final boolean result) {
        if(!result) { throw new AssertionError("Expected true"); }
    }

    public static void main(final String[] args) throws Exception {
        testArgs();
        testIni();
    }

    public static final HashSet<String> ignore = new HashSet<>();
    public static final HashSet<String> require = new HashSet<>();
    static {
        ignore.add("e");
        require.add("a");
    }

    public static final class Args1 { }

    public static final class Args2 {
        public int a;
        public boolean b;
        @Description("test description.")
        public Integer c;
        public File d;
        @Named("e") public String e;
    }

    public static final class Args3 {
        public int a;
        public String b;
        public Args1 c;
    }

    public static void testArgs() throws Exception {
        final ArgsToStruct<Args1> a1 = new ArgsToStruct<>(Args1.class);
        final String[] args1_1 = new String[] {};
        try {
            final Args1 a1_1 = a1.getInstance(args1_1);
            throw new AssertionError("Arguments missing, args to struct should throw.");
        } catch (final RuntimeException ex) {
            // Expected.
        }
        final Args1 a1_1 = a1.getInstance(args1_1, new Object(), false);
        final String[] args1_2 = new String[] {"a", "b"};
        final Args1 a1_2 = a1.getInstance(args1_2);



        final ArgsToStruct<Args2> a2 = new ArgsToStruct<>(Args2.class);
        final String[] args2_1 = new String[] {};
        try {
            final Args2 a2_1 = a2.getInstance(args2_1);
            throw new AssertionError("Arguments missing, args to struct should throw.");
        } catch (final RuntimeException ex) {
            // Expected.
        }
        final Args2 a2_2 = a2.getInstance(args2_1, new Object(), false);

        final String[] args2_3 = new String[] { "-a:1", "-b", "-c:10", "-d:test.txt", "-e:test" };
        final Args2 a2_3 = a2.getInstance(args2_3);

        final String[] args2_4 = new String[] { "-c:20" };
        final Args2 a2_4 = a2.getInstance(args2_4, a2_3, true);

        final ArgsToStruct<Args2> a2v2 = new ArgsToStruct<>(Args2.class, require, ignore);
        final Args2 a2v2_3 = a2v2.getInstance(args2_3);
        final String[] args2v2_4 = new String[] { "-c:10", "-d:test.txt", "-e:test" };
        try {
            final Args2 a2v2_4 = a2v2.getInstance(args2v2_4);
            throw new AssertionError("-a was a required argument that was missing.");
        } catch (final RuntimeException ex) {
            // Expected.
        }



        final ArgsToStruct<Args3> a3 = new ArgsToStruct<>(Args3.class);
        final String[] args3_1 = new String[] { "-a:1", "-b:awef", "-c:10" };
        final Args3 a3_1 = a3.getInstance(args3_1);
    }

    public static final class Args4 {
        public int a;
        public Boolean bool;
        public String b;
        public Args2 c;
        public Args5 d;
        public Map<String,String> keys = new HashMap<>();
    }

    public static final class Args5 {
        public int a;
        public String b;
        public Args2 c;
    }

    public static void testIni() throws Exception {
        final IniProperties empty = new IniProperties().load(new StringReader(""));
        final IniProperties args2_1 = new IniProperties().load(
            new StringReader("a=1\nb=true\nc=10\nd=test.txt\ne:test"));


        final IniToStruct<Args1> a1 = new IniToStruct<>(Args1.class);
        final Args1 a1_1 = a1.getInstance(new Object(), empty);



        final IniToStruct<Args2> a2 = new IniToStruct<>(Args2.class);
        final Args2 a2_1 = a2.getInstance(new Object(), empty);
        final Args2 a2_2 = a2.getInstance(new Object(), args2_1);



        final IniToStruct<Args2> a2v2 = new IniToStruct<>(Args2.class, require, ignore);



        final IniToStruct<Args3> a3 = new IniToStruct<>(Args3.class);


        final IniProperties args4_1 = new IniProperties().load(
            new StringReader("a=1\nb=true\nbool=false\n"
                + "keys.foo=bar\nkeys.awef=1\nkeys.a=true\n"
                + "[c]\na=1\nb=true\nc=10\nd=test.txt\ne:test\n"
                + "[d]\na=2\nb=ttt\n"
                + "[d.c]\na=3\nb=true\nc=8\n"));
        final IniToStruct<Args4> a4 = new IniToStruct<>(Args4.class);
        final Args4 a4_1 = a4.getInstance(new Object(), args4_1);
        assertTrue("bar".equals(a4_1.keys.get("foo")));
        assertTrue("1".equals(a4_1.keys.get("awef")));
        assertTrue("true".equals(a4_1.keys.get("a")));
        assertTrue(a4_1.a == 1);
        assertTrue("true".equals(a4_1.b));
        assertTrue(a4_1.bool == false);
        assertTrue(a4_1.c.a == 1);
        assertTrue(a4_1.c.b == true);
        assertTrue(a4_1.c.c.intValue() == 10);
        assertTrue(a4_1.d.c.a == 3);
    }
}