From 074393ed8abda6003f31b97496fa8195c4627753 Mon Sep 17 00:00:00 2001
From: bculkin2442 <bjculkin@mix.wvu.edu>
Date: Mon, 29 Oct 2018 20:07:42 -0400
Subject: More testing.

Add some more testing utilities
---
 .../java/bjc/utils/funcutils/IteratorUtils.java    | 33 ++++++++++++++++++++++
 .../main/java/bjc/utils/funcutils/TestUtils.java   | 18 ++++++++----
 2 files changed, 46 insertions(+), 5 deletions(-)
 create mode 100644 base/src/main/java/bjc/utils/funcutils/IteratorUtils.java

(limited to 'base/src/main/java/bjc/utils/funcutils')

diff --git a/base/src/main/java/bjc/utils/funcutils/IteratorUtils.java b/base/src/main/java/bjc/utils/funcutils/IteratorUtils.java
new file mode 100644
index 0000000..55e5985
--- /dev/null
+++ b/base/src/main/java/bjc/utils/funcutils/IteratorUtils.java
@@ -0,0 +1,33 @@
+package bjc.utils.funcutils;
+
+import java.util.Iterator;
+
+/**
+ * Utility methods for dealing with iterators.
+ * 
+ * @author bjculkin
+ *
+ */
+public class IteratorUtils {
+	/**
+	 * Convert an iterator to an iterable.
+	 * 
+	 * @param itr
+	 *                The iterator to convert.
+	 * @return An iterable that gives back that iterator.
+	 */
+	public static <E> Iterable<E> I(Iterator<E> itr) {
+		return () -> itr;
+	}
+
+	/**
+	 * Convert an iterable to an iterator.
+	 * 
+	 * @param itr
+	 *                The iterable to convert.
+	 * @return The iterator from that iterable
+	 */
+	public static <E> Iterator<E> I(Iterable<E> itr) {
+		return itr.iterator();
+	}
+}
diff --git a/base/src/main/java/bjc/utils/funcutils/TestUtils.java b/base/src/main/java/bjc/utils/funcutils/TestUtils.java
index 124389e..586d366 100644
--- a/base/src/main/java/bjc/utils/funcutils/TestUtils.java
+++ b/base/src/main/java/bjc/utils/funcutils/TestUtils.java
@@ -38,20 +38,28 @@ public class TestUtils {
 	 *                The values to expect from the iterator.
 	 */
 	@SafeVarargs
-	public static <T> void assertIteratorEquals(Iterator<T> src, boolean hasMore, T... vals) {
+	public static <T> void assertIteratorEquals(boolean hasMore, Iterator<T> src, T... vals) {
+		/*
+		 * @NOTE
+		 * 
+		 * Even though it's awkward, the boolean has to come first.
+		 * Otherwise, there are cases where the compiler will get
+		 * confused as to what the right value for T is, and be unable
+		 * to pick an overload.
+		 */
 		assertIteratorEquals(src, vals);
-		
+
 		assertEquals(hasMore, src.hasNext());
 	}
-	
+
 	@SafeVarargs
 	public static <T> void assertListEquals(List<T> src, T... exps) {
 		assertEquals(exps.length, src.size());
-		
+
 		int i = 0;
 		for (T act : src) {
 			T exp = exps[i++];
-			
+
 			assertEquals(exp, act);
 		}
 	}
-- 
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