fix: bug & add test case

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: headlessNode

lib/node_modules/@stdlib/ndarray/concat/lib/assign.js

@@ -87,6 +87,7 @@ function assign( arrays, out, dim ) {
 	var err;
 	var osh;
 	var odt;
+	var oo;
 	var mi;
 	var N;
 	var d;
@@ -154,9 +155,11 @@ function assign( arrays, out, dim ) {
 		odt = getDtype( out );
 		odata = getData( out );
 		oord = getOrder( out );
+		oo = 0;
 		for ( i = 0; i < arrs.length; i++ ) {
-			v = ndarray( odt, odata, arrs[ i ].shape, shape2strides( arrs[ i ].shape, oord ), 0, oord ); // eslint-disable-line max-len
+			v = ndarray( odt, odata, arrs[ i ].shape, shape2strides( arrs[ i ].shape, oord ), oo, oord ); // eslint-disable-line max-len
 			base( [ arrs[ i ], v ] );
+			oo += arrs[ i ].shape[ 0 ];
 		}
 		return out;
 	}

lib/node_modules/@stdlib/ndarray/concat/lib/main.js

@@ -35,7 +35,7 @@ var getOrder = require( '@stdlib/ndarray/order' );
 var getData = require( '@stdlib/ndarray/data-buffer' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
 var format = require( '@stdlib/string/format' );
-var assign = require( '@stdlib/ndarray/base/assign' );
+var base = require( '@stdlib/ndarray/base/assign' );
 var output = require( './output.js' );
 
 
@@ -81,6 +81,7 @@ function concat( arrays, dim ) {
 	var out;
 	var osh;
 	var odt;
+	var oo;
 	var mi;
 	var N;
 	var d;
@@ -142,9 +143,11 @@ function concat( arrays, dim ) {
 		odt = getDtype( out );
 		odata = getData( out );
 		oord = getOrder( out );
+		oo = 0;
 		for ( i = 0; i < arrs.length; i++ ) {
-			v = ndarray( odt, odata, arrs[ i ].shape, shape2strides( arrs[ i ].shape, oord ), 0, oord ); // eslint-disable-line max-len
-			assign( [ arrs[ i ], v ] );
+			v = ndarray( odt, odata, arrs[ i ].shape, shape2strides( arrs[ i ].shape, oord ), oo, oord ); // eslint-disable-line max-len
+			base( [ arrs[ i ], v ] );
+			oo += arrs[ i ].shape[ 0 ];
 		}
 		return out;
 	}
@@ -159,7 +162,7 @@ function concat( arrays, dim ) {
 			if ( s.done ) {
 				break;
 			}
-			assign( [ s.value, ostacks.next().value ] );
+			base( [ s.value, ostacks.next().value ] );
 		}
 	}
 	return out;

lib/node_modules/@stdlib/ndarray/concat/test/test.assign.js

@@ -246,3 +246,36 @@ tape( 'the function concatenates ndarray along a specified dimension (broadcast
 
 	t.end();
 });
+
+tape( 'the function concatenates ndarrays along a specified dimension(1D)', function test( t ) {
+	var expected;
+	var actual;
+	var xbuf;
+	var ybuf;
+	var out;
+	var x;
+	var y;
+	var z;
+
+	xbuf = new Float64Array( [ 1.0, 2.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 2 ], [ 1 ], 0, 'row-major' );
+
+	ybuf = new Float64Array( [ 3.0, 4.0, 5.0 ] );
+	y = new ndarray( 'float64', ybuf, [ 3 ], [ 1 ], 0, 'row-major' );
+
+	z = zeros( [ 5 ], {
+		'dtype': 'float64'
+	});
+
+	out = assign( [ x, y ], z, -1 );
+
+	actual = ndarray2array( z );
+	expected = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
+
+	t.strictEqual( out, z, 'returns output ndarray' );
+	t.strictEqual( getDtype( z ), 'float64', 'returns expected value' );
+	t.deepEqual( getShape( z ), [ 5 ], 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	t.end();
+});

lib/node_modules/@stdlib/ndarray/concat/test/test.main.js

@@ -232,3 +232,27 @@ tape( 'the function concatenates ndarray along a specified dimension (broadcast
 
 	t.end();
 });
+
+tape( 'the function concatenates ndarrays along a specified dimension(1D)', function test( t ) {
+	var expected;
+	var xbuf;
+	var ybuf;
+	var out;
+	var x;
+	var y;
+
+	xbuf = new Float64Array( [ 1.0, 2.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 2 ], [ 1 ], 0, 'row-major' );
+
+	ybuf = new Float64Array( [ 3.0, 4.0, 5.0 ] );
+	y = new ndarray( 'float64', ybuf, [ 3 ], [ 1 ], 0, 'row-major' );
+
+	out = concat( [ x, y ], -1 );
+	expected = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
+
+	t.strictEqual( getDtype( out ), 'float64', 'returns expected value' );
+	t.deepEqual( getShape( out ), [ 5 ], 'returns expected value' );
+	t.deepEqual( ndarray2array( out ), expected, 'returns expected value' );
+
+	t.end();
+});