From d51e7e38448e24123af13f0fa2682b861a64f964 Mon Sep 17 00:00:00 2001
From: martin dobrev <martindobrev0@gmail.com>
Date: Fri, 2 Nov 2018 00:12:31 +0200
Subject: Add many fixes to parser. Introduce Object Literal and Call
 expression. Add more test for parser. Little enhance around interpreter.

---
 JSImpl/test/ParserTests.cpp | 111 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)

(limited to 'JSImpl/test/ParserTests.cpp')

diff --git a/JSImpl/test/ParserTests.cpp b/JSImpl/test/ParserTests.cpp
index a884f37..bacadf5 100644
--- a/JSImpl/test/ParserTests.cpp
+++ b/JSImpl/test/ParserTests.cpp
@@ -2,11 +2,17 @@
 #include <src/Lexer.h>
 #include <src/Parser.h>
 #include <src/ASTPrinter.h>
+#include <src/ASTInterpreter.h>
 
 #include <gtest/gtest.h>
 
 #include <sstream>
 
+bool CloseFload(double a, double b, double eps = 0.00001)
+{
+	return fabs(a - b) < eps;
+}
+
 TEST(Parser, ParseUnaryExpr)
 {
 	IPLVector<Token> tokens;
@@ -20,3 +26,108 @@ TEST(Parser, ParseUnaryExpr)
         ASSERT_TRUE(!output.str().empty());
 }
 
+TEST(Parser, VariableDeclaration)
+{
+	IPLVector<Token> tokens;
+	Tokenize("var s = 0;", tokens);
+
+	auto expr = Parse(tokens);
+	std::ostringstream output;
+	ASTInterpreter i;
+	i.Run(expr.get());
+	ASSERT_TRUE(i.HasVariable("s"));
+	ASSERT_TRUE(i.ModifyVariable("s") == 0.0);
+}
+
+TEST(Parser, VariableDeclarationAdditionOfLiterals)
+{
+	IPLVector<Token> tokens;
+	Tokenize("var s = 5 + 6;", tokens);
+
+	auto expr = Parse(tokens);
+	std::ostringstream output;
+	ASTInterpreter i;
+	i.Run(expr.get());
+	ASSERT_TRUE(i.HasVariable("s"));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("s"), 11.0));
+}
+
+TEST(Parser, VariableDeclarationAdditionOfVariables)
+{
+	IPLVector<Token> tokens;
+	Tokenize("var a = 5; var b = 4; var c = a + b;", tokens);
+
+	auto expr = Parse(tokens);
+	std::ostringstream output;
+	ASTInterpreter i;
+	i.Run(expr.get());
+	ASSERT_TRUE(i.HasVariable("a"));
+	ASSERT_TRUE(i.HasVariable("b"));
+	ASSERT_TRUE(i.HasVariable("c"));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("a"), 5.0));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("b"), 4.0));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("c"), 9.0));
+}
+
+TEST(Parser, VariableDeclarationMultiplicationOfLiterals)
+{
+	IPLVector<Token> tokens;
+	Tokenize("var s = 5 * 6;", tokens);
+
+	auto expr = Parse(tokens);
+	std::ostringstream output;
+	ASTInterpreter i;
+	i.Run(expr.get());
+	ASSERT_TRUE(i.HasVariable("s"));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("s"), 30.0));
+}
+
+TEST(Parser, VariableDeclarationMultiplicationOfVariables)
+{
+	IPLVector<Token> tokens;
+	Tokenize("var a = 5; var b = 4; var c = a * b;", tokens);
+
+	auto expr = Parse(tokens);
+	std::ostringstream output;
+	ASTInterpreter i;
+	i.Run(expr.get());
+	ASSERT_TRUE(i.HasVariable("a"));
+	ASSERT_TRUE(i.HasVariable("b"));
+	ASSERT_TRUE(i.HasVariable("c"));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("a"), 5.0));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("b"), 4.0));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("c"), 20.0));
+}
+
+
+TEST(Parser, Unary)
+{
+	IPLVector<Token> tokens;
+	Tokenize("var a = 5; a++; var b = 6; --b;", tokens);
+
+	auto expr = Parse(tokens);
+	std::ostringstream output;
+	ASTInterpreter i;
+	i.Run(expr.get());
+	ASSERT_TRUE(i.HasVariable("a"));
+	ASSERT_TRUE(i.HasVariable("b"));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("a"), 6.0));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("b"), 5.0));
+}
+
+
+TEST(Parser, If)
+{
+	IPLVector<Token> tokens;
+	Tokenize("var a = 5; var b = 3; if(a == 5){a++; b++;} b++;", tokens);
+
+	auto expr = Parse(tokens);
+	std::ostringstream output;
+	ASTInterpreter i;
+	i.Run(expr.get());
+	ASSERT_TRUE(i.HasVariable("a"));
+	ASSERT_TRUE(i.HasVariable("b"));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("a"), 6.0));
+	ASSERT_TRUE(CloseFload(i.ModifyVariable("b"), 5.0));
+}
+
-- 
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