module TestParser(tests) where

import Test.HUnit
import Parser.Lexer
import Parser.JavaParser
import Ast


testSingleEmptyClass = TestCase $
    assertEqual "expect single empty class hello" [Class "Hello" [] []] $
    parse [CLASS, IDENTIFIER "Hello", LBRACKET, RBRACKET]
testTwoEmptyClasses = TestCase $
    assertEqual "expect two empty classes" [Class "Class1" [] [], Class "Class2" [] []] $
    parse [CLASS,IDENTIFIER "Class1",LBRACKET,RBRACKET,CLASS,IDENTIFIER "Class2",LBRACKET,RBRACKET]
testBooleanField = TestCase $
    assertEqual "expect class with boolean field" [Class "WithBool" [] [VariableDeclaration "boolean" "value" Nothing]] $
    parse [CLASS,IDENTIFIER "WithBool",LBRACKET,BOOLEAN,IDENTIFIER "value",SEMICOLON,RBRACKET]
testIntField = TestCase $ 
    assertEqual "expect class with int field" [Class "WithInt" [] [VariableDeclaration "int" "value" Nothing]] $
    parse [CLASS,IDENTIFIER "WithInt",LBRACKET,INT,IDENTIFIER "value",SEMICOLON,RBRACKET]
testCustomTypeField = TestCase $
    assertEqual "expect class with foo field" [Class "WithFoo" [] [VariableDeclaration "Foo" "value" Nothing]] $
    parse [CLASS,IDENTIFIER "WithFoo",LBRACKET,IDENTIFIER "Foo",IDENTIFIER "value",SEMICOLON,RBRACKET]
testMultipleDeclarationSameLine = TestCase $
    assertEqual "expect class with two int fields" [Class "TwoInts" [] [VariableDeclaration "int" "num1" Nothing, VariableDeclaration "int" "num2" Nothing]] $
    parse [CLASS,IDENTIFIER "TwoInts",LBRACKET,INT,IDENTIFIER "num1",COMMA,IDENTIFIER "num2",SEMICOLON,RBRACKET]
testMultipleDeclarations = TestCase $
    assertEqual "expect class with int and char field" [Class "Multiple" [] [VariableDeclaration "int" "value" Nothing, VariableDeclaration "char" "letter" Nothing]] $
    parse [CLASS,IDENTIFIER "Multiple",LBRACKET,INT,IDENTIFIER "value",SEMICOLON,CHAR,IDENTIFIER "letter",SEMICOLON,RBRACKET]
testWithModifier = TestCase $
    assertEqual "expect class with int field" [Class "WithInt" [] [VariableDeclaration "int" "value" Nothing]] $
    parse [ABSTRACT,CLASS,IDENTIFIER "WithInt",LBRACKET,PUBLIC,INT,IDENTIFIER "value",SEMICOLON,RBRACKET]

testEmptyMethod = TestCase $
    assertEqual "expect class with method" [Class "WithMethod" [MethodDeclaration "int" "foo" [] (Block [])] []] $
    parse [CLASS,IDENTIFIER "WithMethod",LBRACKET,INT,IDENTIFIER "foo",LBRACE,RBRACE,SEMICOLON,RBRACKET]
testEmptyPrivateMethod = TestCase $ 
    assertEqual "expect class with method" [Class "WithMethod" [MethodDeclaration "int" "foo" [] (Block [])] []] $
    parse [CLASS,IDENTIFIER "WithMethod",LBRACKET,PRIVATE,INT,IDENTIFIER "foo",LBRACE,RBRACE,LBRACKET,RBRACKET,RBRACKET]
testEmptyVoidMethod = TestCase $
    assertEqual "expect class with method" [Class "WithMethod" [MethodDeclaration "void" "foo" [] (Block [])] []] $
    parse [CLASS,IDENTIFIER "WithMethod",LBRACKET,VOID,IDENTIFIER "foo",LBRACE,RBRACE,LBRACKET,RBRACKET,RBRACKET]
testEmptyMethodWithParam = TestCase $
    assertEqual "expect class with method with param" [Class "WithParam" [MethodDeclaration "void" "foo" [ParameterDeclaration "int" "param"] (Block [])] []] $
    parse [CLASS,IDENTIFIER "WithParam",LBRACKET,VOID,IDENTIFIER "foo",LBRACE,INT,IDENTIFIER "param",RBRACE,SEMICOLON,RBRACKET]
testEmptyMethodWithParams = TestCase $
    assertEqual "expect class with multiple params" [Class "WithParams" [MethodDeclaration "void" "foo" [ParameterDeclaration "int" "p1",ParameterDeclaration "Custom" "p2"] (Block [])] []] $
    parse [CLASS,IDENTIFIER "WithParams",LBRACKET,VOID,IDENTIFIER "foo",LBRACE,INT,IDENTIFIER "p1",COMMA,IDENTIFIER "Custom",IDENTIFIER "p2",RBRACE,SEMICOLON,RBRACKET]
testClassWithMethodAndField = TestCase $
    assertEqual "expect class with method and field" [Class "WithMethodAndField" [MethodDeclaration "void" "foo" [] (Block []), MethodDeclaration "int" "bar" [] (Block [])] [VariableDeclaration "int" "value" Nothing]] $
    parse [CLASS,IDENTIFIER "WithMethodAndField",LBRACKET,VOID,IDENTIFIER "foo",LBRACE,RBRACE,LBRACKET,RBRACKET,INT,IDENTIFIER "value",SEMICOLON,INT,IDENTIFIER "bar",LBRACE,RBRACE,SEMICOLON,RBRACKET]
testClassWithConstructor = TestCase $
    assertEqual "expect class with constructor" [Class "WithConstructor" [MethodDeclaration "WithConstructor" "<init>" [] (Block [])] []] $
    parse [CLASS,IDENTIFIER "WithConstructor",LBRACKET,IDENTIFIER "WithConstructor",LBRACE,RBRACE,LBRACKET,RBRACKET,RBRACKET]


testEmptyBlock = TestCase $ assertEqual "expect empty block" (Block []) $ parseBlock [LBRACKET,RBRACKET]
testBlockWithLocalVarDecl = TestCase $
    assertEqual "expect block with local var delcaration" (Block [LocalVariableDeclaration $ VariableDeclaration "int" "localvar" Nothing]) $
    parseBlock [LBRACKET,INT,IDENTIFIER "localvar",SEMICOLON,RBRACKET]
testBlockWithMultipleLocalVarDecls = TestCase $
    assertEqual "expect block with multiple local var declarations" (Block [LocalVariableDeclaration $ VariableDeclaration "int" "var1" Nothing, LocalVariableDeclaration $ VariableDeclaration "boolean" "var2" Nothing]) $
    parseBlock [LBRACKET,INT,IDENTIFIER "var1",SEMICOLON,BOOLEAN,IDENTIFIER "var2",SEMICOLON,RBRACKET]
testNestedBlocks = TestCase $
    assertEqual "expect block with block inside" (Block [Block []]) $
    parseBlock [LBRACKET,LBRACKET,RBRACKET,RBRACKET]
testBlockWithEmptyStatement = TestCase $
    assertEqual "expect empty block" (Block []) $
    parseBlock [LBRACKET,SEMICOLON,SEMICOLON,RBRACKET]

testExpressionIntLiteral = TestCase $
    assertEqual "expect IntLiteral" (IntegerLiteral 3) $
    parseExpression [INTEGERLITERAL 3]
testFieldWithInitialization = TestCase $
    assertEqual "expect Class with initialized field" [Class "WithInitField" [] [VariableDeclaration "int" "number" $ Just $ IntegerLiteral 3]] $
    parse [CLASS,IDENTIFIER "WithInitField",LBRACKET,INT,IDENTIFIER "number",ASSIGN,INTEGERLITERAL 3,SEMICOLON,RBRACKET]

tests = TestList [
    testSingleEmptyClass,
    testTwoEmptyClasses,
    testBooleanField,
    testIntField,
    testCustomTypeField,
    testMultipleDeclarations,
    testWithModifier,
    testEmptyMethod,
    testEmptyPrivateMethod,
    testEmptyVoidMethod,
    testEmptyMethodWithParam,
    testEmptyMethodWithParams,
    testClassWithMethodAndField,
    testClassWithConstructor,
    testEmptyBlock,
    testBlockWithLocalVarDecl,
    testBlockWithMultipleLocalVarDecls,
    testNestedBlocks,
    testBlockWithEmptyStatement,
    testExpressionIntLiteral,
    testFieldWithInitialization
    ]