test: expand coverage and report it in CI

- Add @vitest/coverage-v8, test:coverage script, vitest.config.ts - Extract looksLikeTable to src/detect.ts so it is testable without pulling the obsidian runtime - Add edge-case tests for parser, formatter, convert, and detect (23 -> 38 tests; line coverage 100% on every file except main.ts) - Run coverage in CI and append the line % to the step summary
2026-07-22 06:53:19 +00:00 · 2026-05-25 10:27:46 +03:00 · 2026-05-25 10:27:46 +03:00 · 0c18d9123b
commit 0c18d9123b
parent 4a2f3d1d1c
11 changed files with 448 additions and 9 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -16,4 +16,14 @@ jobs:
          cache: npm
      - run: npm ci
      - run: npm run build
-      - run: npm test
+      - run: npm run test:coverage
+
+      - name: Coverage summary
+        if: always()
+        run: |
+          if [ -f coverage/coverage-summary.json ]; then
+            LINE=$(jq -r '.total.lines.pct' coverage/coverage-summary.json)
+            echo "## Code Coverage" >> $GITHUB_STEP_SUMMARY
+            echo "" >> $GITHUB_STEP_SUMMARY
+            echo "**Line coverage: ${LINE}%**" >> $GITHUB_STEP_SUMMARY
+          fi
--- a/.gitignore
+++ b/.gitignore
@ -2,3 +2,4 @@ node_modules
 main.js
 *.js.map
 data.json
+coverage
--- a/package-lock.json
+++ b/package-lock.json
@ -9,12 +9,73 @@
      "version": "1.0.1",
      "devDependencies": {
        "@types/node": "^20.11.0",
+        "@vitest/coverage-v8": "^4.1.7",
        "esbuild": "^0.28.0",
-        "obsidian": "*",
+        "obsidian": "latest",
        "typescript": "^5.3.0",
        "vitest": "^4.1.7"
      }
    },
+    "node_modules/@babel/helper-string-parser": {
+      "version": "7.27.1",
+      "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.27.1.tgz",
+      "integrity": "sha512-qMlSxKbpRlAridDExk92nSobyDdpPijUq2DW6oDnUqd0iOGxmQjyqhMIihI9+zv4LPyZdRje2cavWPbCbWm3eA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-identifier": {
+      "version": "7.28.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.28.5.tgz",
+      "integrity": "sha512-qSs4ifwzKJSV39ucNjsvc6WVHs6b7S03sOh2OcHF9UHfVPqWWALUsNUVzhSBiItjRZoLHx7nIarVjqKVusUZ1Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/parser": {
+      "version": "7.29.3",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.29.3.tgz",
+      "integrity": "sha512-b3ctpQwp+PROvU/cttc4OYl4MzfJUWy6FZg+PMXfzmt/+39iHVF0sDfqay8TQM3JA2EUOyKcFZt75jWriQijsA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/types": "^7.29.0"
+      },
+      "bin": {
+        "parser": "bin/babel-parser.js"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@babel/types": {
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.29.0.tgz",
+      "integrity": "sha512-LwdZHpScM4Qz8Xw2iKSzS+cfglZzJGvofQICy7W7v4caru4EaAmyUuO6BGrbyQ2mYV11W0U8j5mBhd14dd3B0A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-string-parser": "^7.27.1",
+        "@babel/helper-validator-identifier": "^7.28.5"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@bcoe/v8-coverage": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-1.0.2.tgz",
+      "integrity": "sha512-6zABk/ECA/QYSCQ1NGiVwwbQerUCZ+TQbp64Q3AgmfNvurHH0j8TtXa1qbShXA6qqkpAj4V5W8pP6mLe1mcMqA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
    "node_modules/@codemirror/state": {
      "version": "6.5.0",
      "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-6.5.0.tgz",
@ -516,6 +577,16 @@
        "node": ">=18"
      }
    },
+    "node_modules/@jridgewell/resolve-uri": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz",
+      "integrity": "sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
    "node_modules/@jridgewell/sourcemap-codec": {
      "version": "1.5.5",
      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.5.tgz",
@ -523,6 +594,17 @@
      "dev": true,
      "license": "MIT"
    },
+    "node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.31",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.31.tgz",
+      "integrity": "sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/resolve-uri": "^3.1.0",
+        "@jridgewell/sourcemap-codec": "^1.4.14"
+      }
+    },
    "node_modules/@marijn/find-cluster-break": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/@marijn/find-cluster-break/-/find-cluster-break-1.0.2.tgz",
@ -897,6 +979,37 @@
        "@types/estree": "*"
      }
    },
+    "node_modules/@vitest/coverage-v8": {
+      "version": "4.1.7",
+      "resolved": "https://registry.npmjs.org/@vitest/coverage-v8/-/coverage-v8-4.1.7.tgz",
+      "integrity": "sha512-qsYPeXc5Q9dFLd1i8Ap+Bx8sQgcp+rFVQo4R0dDsWNBzl26ldVF1qOO+RL24K7FDrR6pA+50XedRLSoSG24bVQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@bcoe/v8-coverage": "^1.0.2",
+        "@vitest/utils": "4.1.7",
+        "ast-v8-to-istanbul": "^1.0.0",
+        "istanbul-lib-coverage": "^3.2.2",
+        "istanbul-lib-report": "^3.0.1",
+        "istanbul-reports": "^3.2.0",
+        "magicast": "^0.5.2",
+        "obug": "^2.1.1",
+        "std-env": "^4.0.0-rc.1",
+        "tinyrainbow": "^3.1.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@vitest/browser": "4.1.7",
+        "vitest": "4.1.7"
+      },
+      "peerDependenciesMeta": {
+        "@vitest/browser": {
+          "optional": true
+        }
+      }
+    },
    "node_modules/@vitest/expect": {
      "version": "4.1.7",
      "resolved": "https://registry.npmjs.org/@vitest/expect/-/expect-4.1.7.tgz",
@ -1020,6 +1133,18 @@
        "node": ">=12"
      }
    },
+    "node_modules/ast-v8-to-istanbul": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/ast-v8-to-istanbul/-/ast-v8-to-istanbul-1.0.0.tgz",
+      "integrity": "sha512-1fSfIwuDICFA4LKkCzRPO7F0hzFf0B7+Xqrl27ynQaa+Rh0e1Es0v6kWHPott3lU10AyAr7oKHa65OppjLn3Rg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/trace-mapping": "^0.3.31",
+        "estree-walker": "^3.0.3",
+        "js-tokens": "^10.0.0"
+      }
+    },
    "node_modules/chai": {
      "version": "6.2.2",
      "resolved": "https://registry.npmjs.org/chai/-/chai-6.2.2.tgz",
@ -1157,6 +1282,69 @@
        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
      }
    },
+    "node_modules/has-flag": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+      "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/html-escaper": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
+      "integrity": "sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/istanbul-lib-coverage": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.2.2.tgz",
+      "integrity": "sha512-O8dpsF+r0WV/8MNRKfnmrtCWhuKjxrq2w+jpzBL5UZKTi2LeVWnWOmWRxFlesJONmc+wLAGvKQZEOanko0LFTg==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/istanbul-lib-report": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-3.0.1.tgz",
+      "integrity": "sha512-GCfE1mtsHGOELCU8e/Z7YWzpmybrx/+dSTfLrvY8qRmaY6zXTKWn6WQIjaAFw069icm6GVMNkgu0NzI4iPZUNw==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "istanbul-lib-coverage": "^3.0.0",
+        "make-dir": "^4.0.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/istanbul-reports": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/istanbul-reports/-/istanbul-reports-3.2.0.tgz",
+      "integrity": "sha512-HGYWWS/ehqTV3xN10i23tkPkpH46MLCIMFNCaaKNavAXTF1RkqxawEPtnjnGZ6XKSInBKkiOA5BKS+aZiY3AvA==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "html-escaper": "^2.0.0",
+        "istanbul-lib-report": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/js-tokens": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-10.0.0.tgz",
+      "integrity": "sha512-lM/UBzQmfJRo9ABXbPWemivdCW8V2G8FHaHdypQaIy523snUjog0W71ayWXTjiR+ixeMyVHN2XcpnTd/liPg/Q==",
+      "dev": true,
+      "license": "MIT"
+    },
    "node_modules/lightningcss": {
      "version": "1.32.0",
      "resolved": "https://registry.npmjs.org/lightningcss/-/lightningcss-1.32.0.tgz",
@ -1428,6 +1616,34 @@
        "@jridgewell/sourcemap-codec": "^1.5.5"
      }
    },
+    "node_modules/magicast": {
+      "version": "0.5.3",
+      "resolved": "https://registry.npmjs.org/magicast/-/magicast-0.5.3.tgz",
+      "integrity": "sha512-pVKE4UdSQ7DvHzivsCIFx2BJn1mHG6KsyrFcaxFx6tONdneEuThrDx0Cj3AMg58KyN4pzYT+LHOotxDQDjNvkw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.29.3",
+        "@babel/types": "^7.29.0",
+        "source-map-js": "^1.2.1"
+      }
+    },
+    "node_modules/make-dir": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-4.0.0.tgz",
+      "integrity": "sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "semver": "^7.5.3"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
    "node_modules/moment": {
      "version": "2.29.4",
      "resolved": "https://registry.npmjs.org/moment/-/moment-2.29.4.tgz",
@ -1573,6 +1789,19 @@
        "@rolldown/binding-win32-x64-msvc": "1.0.2"
      }
    },
+    "node_modules/semver": {
+      "version": "7.8.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.8.1.tgz",
+      "integrity": "sha512-rkVq3IXh+4FDGch+KwzX3aV9W3kO54GyEgpvBzSyctDA6Xtd7RJQV1xmXbeQp5v7+VzLOfVqiutSE6GICgPFvg==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
    "node_modules/siginfo": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/siginfo/-/siginfo-2.0.0.tgz",
@ -1612,6 +1841,19 @@
      "license": "MIT",
      "peer": true
    },
+    "node_modules/supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
    "node_modules/tinybench": {
      "version": "2.9.0",
      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
--- a/package.json
+++ b/package.json
@ -7,10 +7,12 @@
    "dev": "node esbuild.config.mjs",
    "build": "tsc -noEmit -skipLibCheck && node esbuild.config.mjs production",
    "test": "vitest run",
-    "test:watch": "vitest"
+    "test:watch": "vitest",
+    "test:coverage": "vitest run --coverage"
  },
  "devDependencies": {
    "@types/node": "^20.11.0",
+    "@vitest/coverage-v8": "^4.1.7",
    "esbuild": "^0.28.0",
    "obsidian": "latest",
    "typescript": "^5.3.0",
--- a/src/tests/convert.test.ts
+++ b/src/tests/convert.test.ts
@ -82,4 +82,49 @@ describe("convertSelection", () => {

    expect(editor.getValue()).toBe(doc);
  });
+
+  it("does nothing when the selection is empty", () => {
+    const doc = "│ A │ B │\n│ 1 │ 2 │";
+    const editor = new FakeEditor(doc, { line: 0, ch: 5 }, { line: 0, ch: 5 });
+
+    convertSelection(editor as unknown as Editor);
+
+    expect(editor.getValue()).toBe(doc);
+  });
+
+  it("trims the trailing line when the selection ends at column 0 of the next line", () => {
+    // Mimics a triple-click drag: selection extends through "\n" onto a new line.
+    const doc =
+      "┌──────┬──────┐\n" +
+      "│ A    │ B    │\n" +
+      "├──────┼──────┤\n" +
+      "│ 1    │ 2    │\n" +
+      "└──────┴──────┘\n" +
+      "after";
+    const editor = new FakeEditor(doc, { line: 0, ch: 0 }, { line: 5, ch: 0 });
+
+    convertSelection(editor as unknown as Editor);
+
+    expect(editor.getValue()).toBe(
+      "| A | B |\n" + "| - | - |\n" + "| 1 | 2 |\n" + "after"
+    );
+  });
+
+  it("preserves text before and after a table embedded mid-document", () => {
+    const doc =
+      "before\n" +
+      "┌──────┬──────┐\n" +
+      "│ A    │ B    │\n" +
+      "├──────┼──────┤\n" +
+      "│ 1    │ 2    │\n" +
+      "└──────┴──────┘\n" +
+      "after";
+    const editor = new FakeEditor(doc, { line: 1, ch: 0 }, { line: 5, ch: 15 });
+
+    convertSelection(editor as unknown as Editor);
+
+    expect(editor.getValue()).toBe(
+      "before\n" + "| A | B |\n" + "| - | - |\n" + "| 1 | 2 |\n" + "after"
+    );
+  });
 });
--- a/src/tests/detect.test.ts
+++ b/src/tests/detect.test.ts
@ -0,0 +1,26 @@
+import { describe, it, expect } from "vitest";
+import { looksLikeTable } from "../detect";
+
+describe("looksLikeTable", () => {
+  it("detects Unicode box-drawing characters", () => {
+    expect(looksLikeTable("│ a │ b │")).toBe(true);
+    expect(looksLikeTable("┌──┬──┐")).toBe(true);
+    expect(looksLikeTable("└──┴──┘")).toBe(true);
+    expect(looksLikeTable("├──┼──┤")).toBe(true);
+  });
+
+  it("detects ASCII borders with dashes and equals", () => {
+    expect(looksLikeTable("+----+----+")).toBe(true);
+    expect(looksLikeTable("+====+====+")).toBe(true);
+  });
+
+  it("rejects plain prose", () => {
+    expect(looksLikeTable("Just some regular text.")).toBe(false);
+    expect(looksLikeTable("Two\nlines, no table.")).toBe(false);
+  });
+
+  it("rejects a plain Markdown table without box-drawing or +-+ borders", () => {
+    const md = "| a | b |\n| - | - |\n| 1 | 2 |";
+    expect(looksLikeTable(md)).toBe(false);
+  });
+});
--- a/src/tests/formatter.test.ts
+++ b/src/tests/formatter.test.ts
@ -30,6 +30,11 @@ describe("looksLikeIdentifier", () => {
    expect(looksLikeIdentifier("admin")).toBe(false);
    expect(looksLikeIdentifier("hello")).toBe(false);
  });
+
+  it("detects colon-separated identifiers", () => {
+    expect(looksLikeIdentifier("Foo:Bar")).toBe(true);
+    expect(looksLikeIdentifier("namespace:type")).toBe(true);
+  });
 });

 describe("formatMarkdownTable", () => {
@ -99,6 +104,30 @@ describe("formatMarkdownTable", () => {
    expect(result).toContain("fixed via ShowableScope");
  });

+  it("does not wrap header values in backticks even when they look like identifiers", () => {
+    const table: ParsedTable = {
+      headers: ["MyClass", "Note"],
+      rows: [["plain", "text"]],
+    };
+
+    const result = formatMarkdownTable(table);
+    const headerLine = result.split("\n")[0];
+
+    expect(headerLine).toContain("MyClass");
+    expect(headerLine).not.toContain("`MyClass`");
+  });
+
+  it("formats a single-row table", () => {
+    const table: ParsedTable = {
+      headers: ["A", "B"],
+      rows: [["1", "2"]],
+    };
+
+    expect(formatMarkdownTable(table)).toBe(
+      "| A | B |\n| - | - |\n| 1 | 2 |"
+    );
+  });
+
  it("handles empty cells", () => {
    const table: ParsedTable = {
      headers: ["A", "B"],
--- a/src/tests/parser.test.ts
+++ b/src/tests/parser.test.ts
@ -131,6 +131,75 @@ describe("parseTable", () => {
    ]);
  });

+  it("parses an ASCII table with = borders", () => {
+    const input = `+======+======+
+| Name | Age  |
+======+======+
+| Eve  | 22   |
+======+======+`;
+
+    const result = parseTable(input);
+
+    expect(result).not.toBeNull();
+    expect(result!.headers).toEqual(["Name", "Age"]);
+    expect(result!.rows).toEqual([["Eve", "22"]]);
+  });
+
+  it("parses an existing Markdown pipe table", () => {
+    const input = `| Name | Age |
+| ---- | --- |
+| Dana | 31  |
+| Erik | 28  |`;
+
+    const result = parseTable(input);
+
+    expect(result).not.toBeNull();
+    expect(result!.headers).toEqual(["Name", "Age"]);
+    expect(result!.rows).toEqual([
+      ["Dana", "31"],
+      ["Erik", "28"],
+    ]);
+  });
+
+  it("drops rows whose column count differs from the header", () => {
+    const input = `│ A │ B │
+│ 1 │ 2 │
+│ x │ y │ z │
+│ 3 │ 4 │`;
+
+    const result = parseTable(input);
+
+    expect(result).not.toBeNull();
+    expect(result!.headers).toEqual(["A", "B"]);
+    expect(result!.rows).toEqual([
+      ["1", "2"],
+      ["3", "4"],
+    ]);
+  });
+
+  it("handles mixed │ and | delimiters across lines", () => {
+    const input = `│ A │ B │
+| 1 | 2 |`;
+
+    const result = parseTable(input);
+
+    expect(result).not.toBeNull();
+    expect(result!.headers).toEqual(["A", "B"]);
+    expect(result!.rows).toEqual([["1", "2"]]);
+  });
+
+  it("tolerates blank lines between data rows when no border is present", () => {
+    const input = `│ A │ B │
+
+│ 1 │ 2 │`;
+
+    const result = parseTable(input);
+
+    expect(result).not.toBeNull();
+    expect(result!.headers).toEqual(["A", "B"]);
+    expect(result!.rows).toEqual([["1", "2"]]);
+  });
+
  it("handles a three-column table", () => {
    const input = `┌──────┬──────┬──────┐
 │ A    │ B    │ C    │
--- a/src/detect.ts
+++ b/src/detect.ts
@ -0,0 +1,8 @@
+const TABLE_HINT = /[│┌┬┐├┼┤└┴┘─]/;
+
+// Quick heuristic gate used by main.ts before the more expensive parseTable.
+// True for ASCII box-drawing tables and +---+ / +===+ ruled tables; false for
+// plain prose and plain Markdown pipe tables (which need no conversion).
+export function looksLikeTable(text: string): boolean {
+  return TABLE_HINT.test(text) || /\+[-=]+\+/.test(text);
+}
--- a/src/main.ts
+++ b/src/main.ts
@ -1,11 +1,6 @@
 import { Editor, Menu, Plugin } from "obsidian";
 import { convertSelection } from "./convert";
-
-const TABLE_HINT = /[│┌┬┐├┼┤└┴┘─]/;
-
-function looksLikeTable(text: string): boolean {
-  return TABLE_HINT.test(text) || /\+[-=]+\+/.test(text);
-}
+import { looksLikeTable } from "./detect";

 export default class TableBeautifierPlugin extends Plugin {
  onload() {
--- a/vitest.config.ts
+++ b/vitest.config.ts
@ -0,0 +1,12 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    coverage: {
+      provider: "v8",
+      include: ["src/**/*.ts"],
+      exclude: ["src/**/__tests__/**"],
+      reporter: ["text", "html", "json-summary"],
+    },
+  },
+});