Package org.stringtemplate.v4.test

Source Code of org.stringtemplate.v4.test.TestGroupSyntaxErrors

/*
[The "BSD license"]
Copyright (c) 2009 Terence Parr
All rights reserved.

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modification, are permitted provided that the following conditions
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1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
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    documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
    derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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package org.stringtemplate.v4.test;

import org.junit.Test;
import org.stringtemplate.v4.STErrorListener;
import org.stringtemplate.v4.STGroup;
import org.stringtemplate.v4.STGroupFile;
import org.stringtemplate.v4.misc.ErrorBuffer;

import static org.junit.Assert.assertEquals;

public class TestGroupSyntaxErrors extends BaseTest {
  @Test public void testMissingImportString() throws Exception {
    String templates =
      "import\n" +
      "foo() ::= <<>>\n";
    writeFile(tmpdir, "t.stg", templates);

    STErrorListener errors = new ErrorBuffer();
    STGroup group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 2:0: mismatched input 'foo' expecting STRING"+newline+
      "t.stg 2:3: missing EOF at '('"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

  @Test public void testImportNotString() throws Exception {
    String templates =
      "import Super.stg\n" +
      "foo() ::= <<>>\n";
    writeFile(tmpdir, "t.stg", templates);

    STErrorListener errors = new ErrorBuffer();
    STGroup group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 1:7: mismatched input 'Super' expecting STRING"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

  @Test public void testMissingTemplate() throws Exception {
    String templates =
      "foo() ::= \n";
    writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    STErrorListener errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 2:0: missing template at '<EOF>'"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

  @Test public void testUnclosedTemplate() throws Exception {
    String templates =
      "foo() ::= {";
    writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    STErrorListener errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 1:11: missing final '}' in {...} anonymous template" +newline+
              "t.stg 1:10: no viable alternative at input '{'"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testParen() throws Exception {
        String templates =
            "foo( ::= << >>\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    STErrorListener errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 1:5: no viable alternative at input '::='"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testNewlineInString() throws Exception {
        String templates =
            "foo() ::= \"\nfoo\"\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    STErrorListener errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 1:11: \\n in string"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testParen2() throws Exception {
        String templates =
            "foo) ::= << >>\n" +
            "bar() ::= <<bar>>\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    STErrorListener errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 1:0: garbled template definition starting at 'foo'"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testArg() throws Exception {
        String templates =
            "foo(a,) ::= << >>\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    STErrorListener errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "t.stg 1:6: missing ID at ')'"+newline;
    String result = errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testArg2() throws Exception {
        String templates =
            "foo(a,,) ::= << >>\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected =
      "[t.stg 1:6: missing ID at ',', " +
      "t.stg 1:7: missing ID at ')']";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }

  @Test public void testArg3() throws Exception {
    String templates =
      "foo(a b) ::= << >>\n";
    writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected =
      "[t.stg 1:6: no viable alternative at input 'b']";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }

  @Test public void testDefaultArgsOutOfOrder() throws Exception {
    String templates =
      "foo(a={hi}, b) ::= << >>\n";
    writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected =
      "[t.stg 1:12: required parameters (b) must appear before optional parameters]";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testErrorWithinTemplate() throws Exception {
        String templates =
            "foo(a) ::= \"<a b>\"\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "[t.stg 1:15: 'b' came as a complete surprise to me]";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testMap() throws Exception {
        String templates =
            "d ::= []\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "[t.stg 1:7: missing dictionary entry at ']']";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testMap2() throws Exception {
        String templates =
            "d ::= [\"k\":]\n";
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "[t.stg 1:11: missing value for key at ']']";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testMap3() throws Exception {
        String templates =
            "d ::= [\"k\":{dfkj}}]\n"; // extra }
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "[t.stg 1:17: invalid character '}']";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }

    @Test public void testUnterminatedString() throws Exception {
        String templates =
            "f() ::= \""; // extra }
        writeFile(tmpdir, "t.stg", templates);

    STGroupFile group = null;
    ErrorBuffer errors = new ErrorBuffer();
    group = new STGroupFile(tmpdir+"/"+"t.stg");
    group.setListener(errors);
    group.load(); // force load
    String expected = "[t.stg 1:9: unterminated string, t.stg 1:9: missing template at '<EOF>']";
    String result = errors.errors.toString();
    assertEquals(expected, result);
  }
}
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