feat: cover more token symbol edge cases

6 files changed, 27 insertions, 12 deletions

diff --git a/packages/instant/src/components/asset_amount_input.tsx b/packages/instant/src/components/asset_amount_input.tsx
index 368ef10c2..960b8bc95 100644
--- a/packages/instant/src/components/asset_amount_input.tsx
+++ b/packages/instant/src/components/asset_amount_input.tsx
@@ -8,7 +8,7 @@ import { assetUtils } from '../util/asset';
 import { util } from '../util/util';
 
 import { ScalingAmountInput } from './scaling_amount_input';
-import { Container, Text } from './ui';
+import { Container, Flex, Text } from './ui';
 
 // Asset amounts only apply to ERC20 assets
 export interface AssetAmountInputProps {
@@ -35,17 +35,17 @@ export class AssetAmountInput extends React.Component<AssetAmountInputProps, Ass
     public render(): React.ReactNode {
         const { asset, onChange, ...rest } = this.props;
         return (
-            <Container>
+            <Container whiteSpace="nowrap">
                 <Container borderBottom="1px solid rgba(255,255,255,0.3)" display="inline-block">
                     <ScalingAmountInput
                         {...rest}
-                        textLengthThreshold={4}
+                        textLengthThreshold={this._textLengthThresholdForAsset(asset)}
                         maxFontSizePx={this.props.startingFontSizePx}
                         onChange={this._handleChange}
                         onFontSizeChange={this._handleFontSizeChange}
                     />
                 </Container>
-                <Container display="inline-block" marginLeft="10px" title={assetUtils.bestNameForAsset(asset)}>
+                <Container display="inline-flex" marginLeft="10px" title={assetUtils.bestNameForAsset(asset)}>
                     <Text
                         fontSize={`${this.state.currentFontSizePx}px`}
                         fontColor={ColorOption.white}
@@ -65,4 +65,17 @@ export class AssetAmountInput extends React.Component<AssetAmountInputProps, Ass
             currentFontSizePx: fontSizePx,
         });
     };
+    private readonly _textLengthThresholdForAsset = (asset?: ERC20Asset): number => {
+        if (_.isUndefined(asset)) {
+            return 3;
+        }
+        const symbol = asset.metaData.symbol;
+        if (symbol.length <= 3) {
+            return 5;
+        }
+        if (symbol.length === 5) {
+            return 3;
+        }
+        return 4;
+    };
 }
diff --git a/packages/instant/src/components/instant_heading.tsx b/packages/instant/src/components/instant_heading.tsx
index 7664d31ae..c9f0ea95a 100644
--- a/packages/instant/src/components/instant_heading.tsx
+++ b/packages/instant/src/components/instant_heading.tsx
@@ -70,10 +70,10 @@ export const InstantHeading: React.StatelessComponent<InstantHeadingProps> = pro
         </Container>
         <Flex direction="row" justify="space-between">
             <Flex height="65px">
-                <SelectedAssetAmountInput startingFontSizePx={45} />
+                <SelectedAssetAmountInput startingFontSizePx={38} />
             </Flex>
             <Flex direction="column" justify="space-between">
-                <Container marginBottom="5px">
+                <Container marginBottom="5px" whiteSpace="nowrap">
                     <Text fontSize="16px" fontColor={ColorOption.white} fontWeight={500}>
                         {loadingOrAmount(props.quoteState, displaytotalEthBaseAmount(props))}
                     </Text>
diff --git a/packages/instant/src/components/scaling_input.tsx b/packages/instant/src/components/scaling_input.tsx
index 7f8e505de..fadb3466b 100644
--- a/packages/instant/src/components/scaling_input.tsx
+++ b/packages/instant/src/components/scaling_input.tsx
@@ -47,7 +47,7 @@ export class ScalingInput extends React.Component<ScalingInputProps, ScalingInpu
     public static defaultProps = {
         onChange: util.boundNoop,
         onFontSizeChange: util.boundNoop,
-        maxLength: 8,
+        maxLength: 7,
         scalingSettings: defaultScalingSettings,
     };
     public state = {
diff --git a/packages/instant/src/components/ui/container.tsx b/packages/instant/src/components/ui/container.tsx
index 293042120..e44cfff1e 100644
--- a/packages/instant/src/components/ui/container.tsx
+++ b/packages/instant/src/components/ui/container.tsx
@@ -26,6 +26,7 @@ export interface ContainerProps {
     backgroundColor?: ColorOption;
     hasBoxShadow?: boolean;
     zIndex?: number;
+    whiteSpace?: string;
 }
 
 export const Container = styled<ContainerProps, 'div'>('div')`
@@ -50,6 +51,7 @@ export const Container = styled<ContainerProps, 'div'>('div')`
     ${props => cssRuleIfExists(props, 'border-top')}
     ${props => cssRuleIfExists(props, 'border-bottom')}
     ${props => cssRuleIfExists(props, 'z-index')}
+    ${props => cssRuleIfExists(props, 'white-space')}
     ${props => (props.hasBoxShadow ? `box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1)` : '')};
     background-color: ${props => (props.backgroundColor ? props.theme[props.backgroundColor] : 'none')};
     border-color: ${props => (props.borderColor ? props.theme[props.borderColor] : 'none')};
diff --git a/packages/instant/src/util/format.ts b/packages/instant/src/util/format.ts
index 8482b1526..ca7c01359 100644
--- a/packages/instant/src/util/format.ts
+++ b/packages/instant/src/util/format.ts
@@ -24,7 +24,7 @@ export const format = {
         if (_.isUndefined(ethUnitAmount)) {
             return defaultText;
         }
-        const roundedAmount = ethUnitAmount.round(decimalPlaces);
+        const roundedAmount = ethUnitAmount.round(decimalPlaces).toDigits(decimalPlaces);
         return `${roundedAmount} ETH`;
     },
     ethBaseAmountInUsd: (
diff --git a/packages/instant/test/util/format.test.ts b/packages/instant/test/util/format.test.ts
index 141df9275..2c9294c78 100644
--- a/packages/instant/test/util/format.test.ts
+++ b/packages/instant/test/util/format.test.ts
@@ -20,8 +20,8 @@ describe('format', () => {
         it('converts .432414 ETH in base units to the string `.4324 ETH`', () => {
             expect(format.ethBaseAmount(DECIMAL_ETH_IN_BASE_UNITS)).toBe('0.4324 ETH');
         });
-        it('converts 5.3014059295032 ETH in base units to the string `5.3014 ETH`', () => {
-            expect(format.ethBaseAmount(IRRATIONAL_ETH_IN_BASE_UNITS)).toBe('5.3014 ETH');
+        it('converts 5.3014059295032 ETH in base units to the string `5.301 ETH`', () => {
+            expect(format.ethBaseAmount(IRRATIONAL_ETH_IN_BASE_UNITS)).toBe('5.301 ETH');
         });
         it('returns defaultText param when ethBaseAmount is not defined', () => {
             const defaultText = 'defaultText';
@@ -38,8 +38,8 @@ describe('format', () => {
         it('converts BigNumer(.432414) to the string `.4324 ETH`', () => {
             expect(format.ethUnitAmount(BIG_NUMBER_DECIMAL)).toBe('0.4324 ETH');
         });
-        it('converts BigNumber(5.3014059295032) to the string `5.3014 ETH`', () => {
-            expect(format.ethUnitAmount(BIG_NUMBER_IRRATIONAL)).toBe('5.3014 ETH');
+        it('converts BigNumber(5.3014059295032) to the string `5.301 ETH`', () => {
+            expect(format.ethUnitAmount(BIG_NUMBER_IRRATIONAL)).toBe('5.301 ETH');
         });
         it('returns defaultText param when ethUnitAmount is not defined', () => {
             const defaultText = 'defaultText';