Adds getIncreasedCoverage to the report ⬆️

src/format/details/formatCoverageDetails.ts

@@ -1,5 +1,6 @@
 import { formatCoverageDetailsPart } from './formatCoverageDetailsPart';
 import { getDecreasedCoverage } from './getDecreasedCoverage';
+import { getIncreasedCoverage } from './getIncreasedCoverage';
 import { getNewFilesCoverage } from './getNewFilesCoverage';
 import { CoverageDetailsMap } from '../../typings/Coverage';
 import { i18n } from '../../utils/i18n';
@@ -10,7 +11,7 @@ export const formatCoverageDetails = (
     threshold: number | undefined
 ): string => {
     const decreasedCoverage = getDecreasedCoverage(headDetails, baseDetails);
-
+    const increasedCoverage = getIncreasedCoverage(headDetails, baseDetails);
     return [
         formatCoverageDetailsPart(
             i18n('newFilesCoverage'),
@@ -24,5 +25,11 @@ export const formatCoverageDetails = (
             decreasedCoverage.baseDetails,
             threshold
         ),
+        formatCoverageDetailsPart(
+            i18n('increasedCoverageFiles'),
+            increasedCoverage.headDetails,
+            increasedCoverage.baseDetails,
+            threshold
+        ),
     ].join('\n');
 };

src/format/details/getIncreasedCoverage.ts

@@ -0,0 +1,29 @@
+import { CoverageDetail, CoverageDetailsMap } from '../../typings/Coverage';
+
+const coverageGreaterThan = (first: CoverageDetail, second: CoverageDetail) =>
+    first.statements > second.statements ||
+    first.branches > second.branches ||
+    first.functions > second.functions;
+
+export const getIncreasedCoverage = (
+    headDetails: CoverageDetailsMap,
+    baseDetails: CoverageDetailsMap | undefined
+) =>
+    Object.keys(headDetails)
+        .filter(
+            (filename) =>
+                headDetails[filename] &&
+                baseDetails?.[filename] &&
+                coverageGreaterThan(headDetails[filename], baseDetails[filename])
+        )
+        .reduce<{
+            headDetails: CoverageDetailsMap;
+            baseDetails: CoverageDetailsMap;
+        }>(
+            (acc, filename) => {
+                acc.headDetails[filename] = headDetails[filename];
+                acc.baseDetails[filename] = baseDetails![filename];
+                return acc;
+            },
+            { headDetails: {}, baseDetails: {} }
+        );

src/format/strings.json

@@ -129,6 +129,7 @@
     "summaryTitle": "Coverage report {{ dir }}",
     "newFilesCoverage": "Show new covered files :hatching_chick:",
     "decreasedCoverageFiles": "Show files with reduced coverage :small_red_triangle_down:",
+    "increasedCoverageFiles": "Show files with increased coverage :arrow_up_small:",
     "baseCoverage": "Base coverage is: ",
     "loadingCoverageFromFile": "Loading code coverage from file: {{ pathToCoverageFile }}"
 }

tests/format/__snapshots__/formatCoverage.test.ts.snap

@@ -18,6 +18,7 @@ exports[`formatCoverage should format standard coverage 1`] = `
 | 🟢 | Functions | 63.64% | 7/11 |
 | 🟢 | Lines | 80.65% | 25/31 |
 
+
 "
 `;
 
@@ -29,6 +30,7 @@ exports[`formatCoverage should format standard coverage 2`] = `
 | 🟢 | Functions | 63.64% | 7/11 |
 | 🟢 | Lines | 80.65% | 25/31 |
 
+
 "
 `;
 
@@ -40,5 +42,6 @@ exports[`formatCoverage should format standard coverage 3`] = `
 | 🟡 | Functions | 63.64% | 7/11 |
 | 🟢 | Lines | 80.65% | 25/31 |
 
+
 "
 `;

tests/format/__snapshots__/getFormattedCoverage.test.ts.snap

@@ -8,5 +8,6 @@ exports[`getFormattedCoverage should match snapshots 1`] = `
 | 🟡 | Functions | 63.64% | 7/11 |
 | 🟢 | Lines | 80.65% | 25/31 |
 
+
 "
 `;

tests/format/details/__snapshots__/formatCoverageDetails.test.ts.snap

@@ -19,6 +19,16 @@ exports[`formatCoverageDetails should match snapshots 1`] = `
 | :-: | :- | :- | :- | :- | :- |
 | 🟡 | decreased.ts | <div title=\\"Base coverage is: 80%\\">70% (-10% 🔻)</div> | <div title=\\"Base coverage is: 60%\\">50% (-10% 🔻)</div> | <div title=\\"Base coverage is: 60%\\">50% (-10% 🔻)</div> | <div title=\\"Base coverage is: 90%\\">80% (-10% 🔻)</div> |
 
+</details>
+
+
+<details><summary>Show files with increased coverage 🔼</summary>
+<br/>
+
+| <div title=\\"Status of coverage:&#10; 🟢 - ok&#10; 🟡 - slightly more than threshold&#10; 🔴 - under the threshold\\">St.<sup>:grey_question:</sup></div> | File | Statements | Branches | Functions | Lines |
+| :-: | :- | :- | :- | :- | :- |
+| 🟡 | increased.ts | <div title=\\"Base coverage is: 50%\\">70% (+20% 🔼)</div> | <div title=\\"Base coverage is: 30%\\">50% (+20% 🔼)</div> | <div title=\\"Base coverage is: 30%\\">50% (+20% 🔼)</div> | <div title=\\"Base coverage is: 50%\\">80% (+30% 🔼)</div> |
+
 </details>
 "
 `;

tests/format/details/getIncreasedCoverage.test.ts

@@ -0,0 +1,88 @@
+import { getIncreasedCoverage } from '../../../src/format/details/getIncreasedCoverage';
+
+describe('getIncreasedCoverage', () => {
+    it('should return files with increased coverage', () => {
+        expect(
+            getIncreasedCoverage(
+                {
+                    'hello.ts': {
+                        filename: 'hello.ts',
+                        lines: 50,
+                        branches: 50,
+                        functions: 50,
+                        statements: 50,
+                    },
+                    'hello2.ts': {
+                        filename: 'hello.ts',
+                        lines: 50,
+                        branches: 50,
+                        functions: 50,
+                        statements: 50,
+                    },
+                },
+                {
+                    'hello.ts': {
+                        filename: 'hello.ts',
+                        lines: 50,
+                        branches: 40,
+                        functions: 50,
+                        statements: 50,
+                    },
+                    'hello2.ts': {
+                        filename: 'hello.ts',
+                        lines: 50,
+                        branches: 50,
+                        functions: 50,
+                        statements: 50,
+                    },
+                }
+            )
+        ).toStrictEqual({
+            headDetails: {
+                'hello.ts': {
+                    filename: 'hello.ts',
+                    lines: 50,
+                    branches: 50,
+                    functions: 50,
+                    statements: 50,
+                },
+            },
+            baseDetails: {
+                'hello.ts': {
+                    filename: 'hello.ts',
+                    lines: 50,
+                    branches: 40,
+                    functions: 50,
+                    statements: 50,
+                },
+            },
+        });
+    });
+
+    it('should return empty object, when base details not specified', () => {
+        expect(
+            getIncreasedCoverage(
+                {
+                    'hello.ts': {
+                        filename: 'hello.ts',
+                        lines: 50,
+                        branches: 50,
+                        functions: 50,
+                        statements: 50,
+                    },
+                    'hello2.ts': {
+                        filename: 'hello.ts',
+                        lines: 50,
+                        branches: 50,
+                        functions: 50,
+                        statements: 50,
+                    },
+                },
+                undefined
+            )
+        ).toStrictEqual({
+            headDetails: {},
+            baseDetails: {},
+        });
+    });
+});

tests/stages/__snapshots__/createReport.test.ts.snap

@@ -15,6 +15,7 @@ Object {
 | 🟢 | Lines | 80.65% | 25/31 |
 
 
+
 ## Test suite run failed
 Failed tests: 0/12. Failed suites: 0/5.
 
@@ -38,6 +39,7 @@ Object {
 | 🟢 | Lines | 80.65% | 25/31 |
 
 
+
 ## Test suite run success
 12 tests passing in 5 suites.
 
@@ -61,6 +63,7 @@ Object {
 | 🟢 | Lines | 80.65% | 25/31 |
 
 
+
 ## Test suite run success
 12 tests passing in 5 suites.
 
@@ -84,6 +87,7 @@ Object {
 | 🟢 | Lines | 80.65% | 25/31 |
 
 
+
 ## Test suite run success
 12 tests passing in 5 suites.