fix: zero-based columns

src/extract/evaluate.ts

@@ -106,15 +106,17 @@ export async function extractWithEvaluation(
 
       if (endLine === startLine) {
         endColumn = Number.MAX_SAFE_INTEGER; // assume it takes the entire line of a single-line test case
+      } else {
+        endColumn -= 1;
       }
 
       const node: IParsedNode = {
         name,
         kind,
         startLine: startLine - 1,
-        startColumn,
+        startColumn: startColumn - 1,
         endLine: endLine - 1,
-        endColumn,
+        endColumn: endColumn,
         children: [],
       };
       if (directive) {

src/test/unit/extract/evaluate.test.ts

@@ -27,7 +27,7 @@ describe('evaluate', () => {
         kind: NodeKind.Suite,
         startLine: 0,
         startColumn: 0,
-        endColumn: 1,
+        endColumn: 0,
         endLine: 2,
         children: [
           {
@@ -63,7 +63,7 @@ describe('evaluate', () => {
         kind: NodeKind.Suite,
         startLine: 0,
         startColumn: 0,
-        endColumn: 1,
+        endColumn: 0,
         endLine: 4,
         children: [
           {
@@ -115,7 +115,7 @@ describe('evaluate', () => {
         startLine: 0,
         startColumn: 0,
         endLine: 2,
-        endColumn: 1,
+        endColumn: 0,
         children: [],
         error: 'whoops',
       },
@@ -140,7 +140,7 @@ describe('evaluate', () => {
         startLine: 0,
         startColumn: 0,
         endLine: 3,
-        endColumn: 1,
+        endColumn: 0,
         children: [
           {
             name: 'a',