diff --git a/block_test.go b/block_test.go
index 52daa21..d954aa2 100644
--- a/block_test.go
+++ b/block_test.go
@@ -153,6 +153,26 @@ func TestBlock(t *testing.T) {
 
 		}
 	}
+
+	// Transaction offsets and length for the transaction in Block100000.
+	wantTxLocs := []btcwire.TxLoc{
+		btcwire.TxLoc{TxStart: 81, TxLen: 135},
+		btcwire.TxLoc{TxStart: 216, TxLen: 259},
+		btcwire.TxLoc{TxStart: 475, TxLen: 257},
+		btcwire.TxLoc{TxStart: 732, TxLen: 225},
+	}
+
+	// Ensure the transaction location information is accurate.
+	txLocs, err := b.TxLoc()
+	if err != nil {
+		t.Errorf("TxLoc: %v", err)
+		return
+	}
+	if !reflect.DeepEqual(txLocs, wantTxLocs) {
+		t.Errorf("TxLoc: mismatched transaction location information "+
+			"- got %v, want %v", spew.Sdump(txLocs),
+			spew.Sdump(wantTxLocs))
+	}
 }
 
 // TestNewBlockFromBytes tests creation of a Block from raw bytes.
diff --git a/test_coverage.txt b/test_coverage.txt
index dad4595..f6a65d9 100644
--- a/test_coverage.txt
+++ b/test_coverage.txt
@@ -10,7 +10,7 @@ github.com/conformal/btcutil/block.go	 NewBlock			 100.00% (1/1)
 github.com/conformal/btcutil/block.go	 Block.Bytes			 88.89% (8/9)
 github.com/conformal/btcutil/block.go	 NewBlockFromBytes		 85.71% (6/7)
 github.com/conformal/btcutil/block.go	 Block.TxSha			 81.82% (9/11)
-github.com/conformal/btcutil/block.go	 Block.TxLoc			 0.00% (0/9)
+github.com/conformal/btcutil/block.go	 Block.TxLoc			 77.78% (7/9)
 github.com/conformal/btcutil/block.go	 OutOfRangeError.Error		 0.00% (0/1)
-github.com/conformal/btcutil		 -------------------------	 75.86% (44/58)
+github.com/conformal/btcutil		 -------------------------	 87.93% (51/58)