Updated on 2026-08-14

2026-05-07 11:52:34 +04:00 · 2026-05-07 11:52:34 +04:00 · 7378429e90
commit 7378429e90
parent a58f9701ed 31fbd0872e
3 changed files with 76 additions and 11 deletions
--- a/core/ui/src/test/kotlin/com/tangem/core/ui/format/bigdecimal/BigDecimalFiatFormatTest.kt
+++ b/core/ui/src/test/kotlin/com/tangem/core/ui/format/bigdecimal/BigDecimalFiatFormatTest.kt
@ -294,4 +294,52 @@ internal class BigDecimalFiatFormatTest {
        Truth.assertThat(formatted)
            .isEqualTo("0.00000000000000000000123".addUsdSymbolLeft())
    }
+
+    @Test
+    fun `price zero is formatted with default precision and does not crash`() {
+        val testValue = BigDecimal.ZERO
+
+        val formatted = testValue.format {
+            fiat(
+                fiatCurrencyCode = usdCurrencyCode,
+                fiatCurrencySymbol = usdSymbol,
+                locale = testLocale,
+            ).price()
+        }
+
+        Truth.assertThat(formatted)
+            .isEqualTo("0.00".addUsdSymbolLeft())
+    }
+
+    @Test
+    fun `price negative integer keeps sign and does not crash`() {
+        val testValue = BigDecimal("-500")
+
+        val formatted = testValue.format {
+            fiat(
+                fiatCurrencyCode = usdCurrencyCode,
+                fiatCurrencySymbol = usdSymbol,
+                locale = testLocale,
+            ).price()
+        }
+
+        Truth.assertThat(formatted)
+            .isEqualTo("-" + "500.00".addUsdSymbolLeft())
+    }
+
+    @Test
+    fun `price negative fractional keeps sign and does not crash`() {
+        val testValue = BigDecimal("-0.5")
+
+        val formatted = testValue.format {
+            fiat(
+                fiatCurrencyCode = usdCurrencyCode,
+                fiatCurrencySymbol = usdSymbol,
+                locale = testLocale,
+            ).price()
+        }
+
+        Truth.assertThat(formatted)
+            .isEqualTo("-" + "0.50".addUsdSymbolLeft())
+    }
 }