Add tests for getRowString for Table Proxy class

matlab/test/arrow/tabular/tTabularInternal.m

@@ -0,0 +1,89 @@
+%TTABULARINTERNAL Unit tests for internal tabular functionality.
+
+% Licensed to the Apache Software Foundation (ASF) under one or more
+% contributor license agreements.  See the NOTICE file distributed with
+% this work for additional information regarding copyright ownership.
+% The ASF licenses this file to you under the Apache License, Version
+% 2.0 (the "License"); you may not use this file except in compliance
+% with the License.  You may obtain a copy of the License at
+%
+%   http://www.apache.org/licenses/LICENSE-2.0
+%
+% Unless required by applicable law or agreed to in writing, software
+% distributed under the License is distributed on an "AS IS" BASIS,
+% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+% implied.  See the License for the specific language governing
+% permissions and limitations under the License.
+
+classdef tTabularInternal < matlab.unittest.TestCase
+
+    properties(TestParameter)
+        TabularObjectWithAllTypes
+
+        TabularObjectWithOneColumn
+
+        TabularObjectWithThreeRows
+    end
+
+    methods (TestParameterDefinition, Static)
+        function TabularObjectWithAllTypes = initializeTabularObjectWithAllTypes()
+            arrays = arrow.internal.test.tabular.createAllSupportedArrayTypes(NumRows=1);
+            TabularObjectWithAllTypes = {arrow.tabular.Table.fromArrays(arrays{:})};
+        end
+
+        function TabularObjectWithOneColumn = initializeTabularObjectWithOneColumn()
+            TabularObjectWithOneColumn = {arrow.table(table((1:3)'))};
+        end
+
+        function TabularObjectWithThreeRows = initializeTabularObjectWithThreeRows()
+            TabularObjectWithThreeRows = {arrow.table(table((1:3)', ["A"; "B"; "C"]))};
+        end
+    end
+
+    methods (Test)
+        function RowWithAllTypes(testCase, TabularObjectWithAllTypes)
+            proxy = TabularObjectWithAllTypes.Proxy;
+            columnStrs = ["false", "2024-02-23", "2023-08-24", "78", "38", ...
+                          "24", "48", "89", "102", "<List>", """107""", "<Struct>", ...
+                          "00:03:44", "00:00:07.000000", "2024-02-10 00:00:00.000000", ...
+                          "107", "143", "36", "51"];
+            expectedString = strjoin(columnStrs, " | ");
+            actualString = proxy.getRowString(struct(Index=int64(1)));
+            testCase.verifyEqual(actualString, expectedString);
+        end
+
+        function RowWithOneField(testCase, TabularObjectWithOneColumn)
+            proxy = TabularObjectWithOneColumn.Proxy;
+            expectedString = "1";
+            actualString = proxy.getRowString(struct(Index=int64(1)));
+            testCase.verifyEqual(actualString, expectedString);
+        end
+
+        function RowIndex(testCase, TabularObjectWithThreeRows)
+            proxy = TabularObjectWithThreeRows.Proxy;
+
+            actualString = proxy.getRowString(struct(Index=int64(1)));
+            expectedString = "1 | ""A""";
+            testCase.verifyEqual(actualString, expectedString);
+
+            actualString = proxy.getRowString(struct(Index=int64(2)));
+            expectedString = "2 | ""B""";
+            testCase.verifyEqual(actualString, expectedString);
+
+            actualString = proxy.getRowString(struct(Index=int64(3)));
+            expectedString = "3 | ""C""";
+            testCase.verifyEqual(actualString, expectedString);
+        end
+
+        function TabularPrettyPrintRowFailed(testCase, TabularObjectWithThreeRows)
+            proxy = TabularObjectWithThreeRows.Proxy;
+            fcn = @() proxy.getRowString(struct(Index=int64(0)));
+            testCase.verifyError(fcn, "arrow:tabular:PrintRowFailed");
+
+            fcn = @() proxy.getRowString(struct(Index=int64(4)));
+            testCase.verifyError(fcn, "arrow:tabular:PrintRowFailed");
+        end
+
+    end
+
+end