test: more test coverage

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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    status: passed
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    status: passed
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    status: na
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    status: na
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---

Author: aayush0325

lib/node_modules/@stdlib/lapack/base/dgtts2/test/fixtures/col_major_no_trans_ipiv_ne_i.json

@@ -26,7 +26,8 @@
   "oi": 0,
 
   "B": [ 7.0, 2.0, 1.0, 8.0, 3.0, 1.5, 7.0, 4.0, 2.0 ],
-  "sb": 1,
+  "sb1": 1,
+  "sb2": 3,
   "ob": 0,
 
   "LDB": 3,

lib/node_modules/@stdlib/lapack/base/dgtts2/test/fixtures/col_major_no_trans_nrhs_gt_one.json

@@ -26,8 +26,8 @@
   "oi": 0,
 
   "B": [ 7.0, 2.0, 1.0, 8.0, 3.0, 1.5, 7.0, 4.0, 2.0 ],
-  "sb1": 3,
-  "sb2": 1,
+  "sb1": 1,
+  "sb2": 3,
   "ob": 0,
 
   "LDB": 3,

lib/node_modules/@stdlib/lapack/base/dgtts2/test/fixtures/col_major_trans_ipiv_ne_i.json

@@ -26,7 +26,8 @@
   "oi": 0,
 
   "B": [ 7.0, 2.0, 1.0, 8.0, 3.0, 1.5, 7.0, 4.0, 2.0 ],
-  "sb": 1,
+  "sb1": 1,
+  "sb2": 3,
   "ob": 0,
 
   "LDB": 3,

lib/node_modules/@stdlib/lapack/base/dgtts2/test/fixtures/col_major_trans_nrhs_gt_one.json

@@ -26,7 +26,8 @@
   "oi": 0,
 
   "B": [ 7.0, 2.0, 1.0, 8.0, 3.0, 1.5, 7.0, 4.0, 2.0 ],
-  "sb": 1,
+  "sb1": 1,
+  "sb2": 3,
   "ob": 0,
 
   "LDB": 3,

lib/node_modules/@stdlib/lapack/base/dgtts2/test/fixtures/row_major_no_trans_ipiv_ne_i.json

@@ -26,7 +26,8 @@
   "oi": 0,
 
   "B": [ 7.0, 2.0, 1.0, 8.0, 3.0, 1.5, 7.0, 4.0, 2.0 ],
-  "sb": 1,
+  "sb1": 3,
+  "sb2": 1,
   "ob": 0,
 
   "LDB": 3,

lib/node_modules/@stdlib/lapack/base/dgtts2/test/fixtures/row_major_trans_ipiv_ne_i.json

@@ -26,7 +26,8 @@
   "oi": 0,
 
   "B": [ 7.0, 2.0, 1.0, 8.0, 3.0, 1.5, 7.0, 4.0, 2.0 ],
-  "sb": 1,
+  "sb1": 3,
+  "sb2": 1,
   "ob": 0,
 
   "LDB": 3,