src/test/java/org/shedlang/compiler/parser/ParserRelationalOperationTests.java


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package org.shedlang.compiler.parser;

import org.junit.jupiter.api.Test;

import static org.shedlang.compiler.ast.untyped.UntypedNodeMatchers.*;
import static org.shedlang.compiler.parser.ParserTesting.parseString;
import static org.zwobble.precisely.AssertThat.assertThat;

public class ParserRelationalOperationTests {
    @Test
    public void canParseLessThanExpression() {
        var source = "1 < 2";

        var node = parseString(source, Parser::parseTopLevelExpression);

        assertThat(node, isUntypedLessThanNode(
            isUntypedIntLiteralNode(1),
            isUntypedIntLiteralNode(2)
        ));
    }

    @Test
    public void canParseLessThanOrEqualExpression() {
        var source = "1 <= 2";

        var node = parseString(source, Parser::parseTopLevelExpression);

        assertThat(node, isUntypedLessThanOrEqualNode(
            isUntypedIntLiteralNode(1),
            isUntypedIntLiteralNode(2)
        ));
    }

    @Test
    public void canParseGreaterThanExpression() {
        var source = "1 > 2";

        var node = parseString(source, Parser::parseTopLevelExpression);

        assertThat(node, isUntypedGreaterThanNode(
            isUntypedIntLiteralNode(1),
            isUntypedIntLiteralNode(2)
        ));
    }

    @Test
    public void canParseGreaterThanOrEqualExpression() {
        var source = "1 >= 2";

        var node = parseString(source, Parser::parseTopLevelExpression);

        assertThat(node, isUntypedGreaterThanOrEqualNode(
            isUntypedIntLiteralNode(1),
            isUntypedIntLiteralNode(2)
        ));
    }
}