From 02af075e89fbdeb22575f235a3acb2607e0b4edf Mon Sep 17 00:00:00 2001
From: Ben Culkin <scorpress@gmail.com>
Date: Tue, 27 Sep 2022 19:18:09 -0400
Subject: Minor changes

---
 .../test/java/bjc/test/pratt/PrattParserTest.java  | 58 ++++++++++++++++++++++
 JPratt/src/test/java/bjc/test/pratt/TestUtils.java | 15 ++++++
 .../test/pratt/tokens/StringTokenStreamTest.java   | 39 +++++++++++++++
 3 files changed, 112 insertions(+)
 create mode 100644 JPratt/src/test/java/bjc/test/pratt/PrattParserTest.java
 create mode 100644 JPratt/src/test/java/bjc/test/pratt/TestUtils.java
 create mode 100644 JPratt/src/test/java/bjc/test/pratt/tokens/StringTokenStreamTest.java

(limited to 'JPratt/src/test/java/bjc')

diff --git a/JPratt/src/test/java/bjc/test/pratt/PrattParserTest.java b/JPratt/src/test/java/bjc/test/pratt/PrattParserTest.java
new file mode 100644
index 0000000..608a137
--- /dev/null
+++ b/JPratt/src/test/java/bjc/test/pratt/PrattParserTest.java
@@ -0,0 +1,58 @@
+package bjc.test.pratt;
+
+import static org.junit.Assert.*;
+import static bjc.test.pratt.TestUtils.*;
+
+import java.util.Iterator;
+
+import org.junit.Test;
+
+import bjc.data.ArrayIterator;
+import bjc.data.SimpleTree;
+import bjc.data.Tree;
+import bjc.pratt.PrattParser;
+import bjc.pratt.commands.CommandResult;
+import bjc.pratt.commands.impls.InitialCommands;
+import bjc.pratt.commands.impls.NonInitialCommands;
+import bjc.pratt.tokens.StringTokenStream;
+import bjc.pratt.tokens.Token;
+import bjc.utils.parserutils.ParserException;
+
+@SuppressWarnings("javadoc")
+public class PrattParserTest {
+
+	@Test
+	public void test() {
+		Iterator<Token<String, String>> iter = new ArrayIterator<>(token("(int)", "1"), token("+"),
+				token("(int)", "2"));
+		StringTokenStream tokens = new StringTokenStream(iter);
+
+		PrattParser<String, String, TestState> parser = new PrattParser<>();
+
+		parser.addInitialCommand("(int)", InitialCommands.leaf());
+		parser.addNonInitialCommand("+", NonInitialCommands.infixLeft(1));
+
+		try {			
+			TestState state = new TestState();
+			
+			tokens.mark();
+			CommandResult<String, String> result = parser.parseExpression(0, tokens, state, false);
+			tokens.rollback();
+			
+			assertEquals(CommandResult.Status.SUCCESS, result.status);
+			Tree<Token<String, String>> actualTree = result.success();
+
+			Tree<Token<String, String>> expectedTree = new SimpleTree<>(token("+"),
+					new SimpleTree<>(token("(int)", "1")), new SimpleTree<>(token("(int)", "2")));
+			
+			assertEquals(expectedTree, actualTree);
+		} catch (ParserException e) {
+			e.printStackTrace();
+		}
+	}
+
+}
+
+class TestState {
+
+}
diff --git a/JPratt/src/test/java/bjc/test/pratt/TestUtils.java b/JPratt/src/test/java/bjc/test/pratt/TestUtils.java
new file mode 100644
index 0000000..a32349f
--- /dev/null
+++ b/JPratt/src/test/java/bjc/test/pratt/TestUtils.java
@@ -0,0 +1,15 @@
+package bjc.test.pratt;
+
+import bjc.pratt.tokens.StringToken;
+import bjc.pratt.tokens.Token;
+
+public class TestUtils {
+
+	public static Token<String, String> token(String val) {
+		return token(val, val);
+	}
+	
+	public static Token<String, String> token(String key, String val) {
+		return new StringToken(key, val);
+	}
+}
diff --git a/JPratt/src/test/java/bjc/test/pratt/tokens/StringTokenStreamTest.java b/JPratt/src/test/java/bjc/test/pratt/tokens/StringTokenStreamTest.java
new file mode 100644
index 0000000..5bacac7
--- /dev/null
+++ b/JPratt/src/test/java/bjc/test/pratt/tokens/StringTokenStreamTest.java
@@ -0,0 +1,39 @@
+package bjc.test.pratt.tokens;
+
+import static org.junit.Assert.*;
+import static bjc.test.pratt.TestUtils.*;
+
+import java.util.Iterator;
+
+import org.junit.Test;
+
+import bjc.data.ArrayIterator;
+import bjc.pratt.tokens.StringTokenStream;
+import bjc.pratt.tokens.Token;
+
+@SuppressWarnings("javadoc")
+public class StringTokenStreamTest {
+
+	@Test
+	public void test() {
+		Token<String, String> tokenA = token("a");
+		Token<String, String> tokenB = token("b");
+		Token<String, String> tokenC = token("c");
+		Token<String, String> tokenD = token("d");
+		
+		Iterator<Token<String, String>> itr = new ArrayIterator<>(tokenA, tokenB, tokenC, tokenD);
+		StringTokenStream strm = new StringTokenStream(itr);
+		
+		assertNull(strm.current());
+		assertEquals(tokenA, strm.next());
+		assertEquals(tokenB, strm.next());
+		strm.mark();
+		assertEquals(tokenC, strm.next());
+		assertEquals(tokenD, strm.next());
+		strm.rollback();
+		assertEquals(tokenC, strm.next());
+		assertEquals(tokenD, strm.next());
+		assertEquals(token("(end)"), strm.next());
+	}
+
+}
-- 
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