1 files changed, 29 insertions, 0 deletions

diff --git a/ui-desktop/src/test/java/market/guess/ui/desktop/FormatTest.java b/ui-desktop/src/test/java/market/guess/ui/desktop/FormatTest.java
new file mode 100644
index 0000000..956a322
--- /dev/null
+++ b/ui-desktop/src/test/java/market/guess/ui/desktop/FormatTest.java
@@ -0,0 +1,29 @@
+package market.guess.ui.desktop;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.math.BigDecimal;
+import market.guess.ui.desktop.util.Format;
+import org.junit.jupiter.api.Test;
+
+class FormatTest {
+
+  @Test
+  void testMoneyFormatting() {
+    assertEquals("$0.00", Format.money((BigDecimal) null));
+    assertEquals("$0.00", Format.money(BigDecimal.ZERO));
+    assertEquals("$0.50", Format.money(new BigDecimal("0.50")));
+    assertEquals("$123.45", Format.money(new BigDecimal("123.45")));
+    assertEquals("-$5.00", Format.money(new BigDecimal("-5.00")));
+    assertEquals("$100.00", Format.money(100.0));
+    assertEquals("-$2.50", Format.money(-2.50));
+  }
+
+  @Test
+  void testProbFormatting() {
+    assertEquals("0.50", Format.prob(0.50));
+    assertEquals("0.75", Format.prob(0.751));
+    assertEquals("0.00", Format.prob(0.00));
+    assertEquals("1.00", Format.prob(1.00));
+  }
+}