Add unit tests

packages/rich-text/src/test/get-active-format.js

@@ -6,19 +6,40 @@ import { getActiveFormat } from '../get-active-format';
 
 describe( 'getActiveFormat', () => {
 	const em = { type: 'em' };
+	const strong = { type: 'strong' };
 
-	it( 'should get format by selection', () => {
+	it( 'should return undefined if there is no selection', () => {
 		const record = {
-			formats: [ [ em ], , , ],
+			formats: [ [ em ], [ em ], [ em ] ],
+			text: 'one',
+		};
+
+		expect( getActiveFormat( record, 'em' ) ).toBe( undefined );
+	} );
+
+	it( 'should return format at first character for uncollapsed selection', () => {
+		const record = {
+			formats: [ [ em ], [ strong ], , ],
 			text: 'one',
 			start: 0,
-			end: 1,
+			end: 2,
 		};
 
-		expect( getActiveFormat( record, 'em' ) ).toEqual( em );
+		expect( getActiveFormat( record, 'em' ) ).toBe( em );
 	} );
 
-	it( 'should not get any format if at the boundary', () => {
+	it( 'should return undefined if at the boundary before', () => {
+		const record = {
+			formats: [ [ em ], , [ em ] ],
+			text: 'one',
+			start: 3,
+			end: 3,
+		};
+
+		expect( getActiveFormat( record, 'em' ) ).toBe( undefined );
+	} );
+
+	it( 'should return undefined if at the boundary after', () => {
 		const record = {
 			formats: [ [ em ], , [ em ] ],
 			text: 'one',
@@ -29,7 +50,7 @@ describe( 'getActiveFormat', () => {
 		expect( getActiveFormat( record, 'em' ) ).toBe( undefined );
 	} );
 
-	it( 'should get format if inside boundary position', () => {
+	it( 'should return format if inside format', () => {
 		const record = {
 			formats: [ [ em ], [ em ], [ em ] ],
 			text: 'one',
@@ -39,4 +60,28 @@ describe( 'getActiveFormat', () => {
 
 		expect( getActiveFormat( record, 'em' ) ).toBe( em );
 	} );
+
+	it( 'should return activeFormats', () => {
+		const record = {
+			formats: [ [ em ], , [ em ] ],
+			text: 'one',
+			start: 1,
+			end: 1,
+			activeFormats: [ em ],
+		};
+
+		expect( getActiveFormat( record, 'em' ) ).toBe( em );
+	} );
+
+	it( 'should not return activeFormats for uncollapsed selection', () => {
+		const record = {
+			formats: [ [ em ], , [ em ] ],
+			text: 'one',
+			start: 1,
+			end: 2,
+			activeFormats: [ em ],
+		};
+
+		expect( getActiveFormat( record, 'em' ) ).toBe( undefined );
+	} );
 } );

packages/rich-text/src/test/update-formats.js

@@ -0,0 +1,55 @@
+/**
+ * Internal dependencies
+ */
+
+import { updateFormats } from '../update-formats';
+import { getSparseArrayLength } from './helpers';
+
+describe( 'updateFormats', () => {
+	const em = { type: 'em' };
+
+	it( 'should update formats with empty array', () => {
+		const value = {
+			formats: [ [ em ] ],
+			text: '1',
+		};
+		const expected = {
+			...value,
+			activeFormats: [],
+			formats: [ , ],
+		};
+		const result = updateFormats( {
+			value,
+			start: 0,
+			end: 1,
+			formats: [],
+		} );
+
+		expect( result ).toEqual( expected );
+		expect( result ).toBe( value );
+		expect( getSparseArrayLength( result.formats ) ).toBe( 0 );
+	} );
+
+	it( 'should update formats and update references', () => {
+		const value = {
+			formats: [ [ em ], , ],
+			text: '123',
+		};
+		const expected = {
+			...value,
+			activeFormats: [ em ],
+			formats: [ [ em ], [ em ] ],
+		};
+		const result = updateFormats( {
+			value,
+			start: 1,
+			end: 2,
+			formats: [ { ...em } ],
+		} );
+
+		expect( result ).toEqual( expected );
+		expect( result ).toBe( value );
+		expect( result.formats[ 1 ][ 0 ] ).toBe( em );
+		expect( getSparseArrayLength( result.formats ) ).toBe( 2 );
+	} );
+} );