| 1 | // License: GPL. For details, see LICENSE file. |
| 2 | package org.openstreetmap.josm.testutils; |
| 3 | |
| 4 | import static org.junit.Assert.fail; |
| 5 | |
| 6 | import java.awt.Component; |
| 7 | import java.awt.GraphicsEnvironment; |
| 8 | import java.util.Arrays; |
| 9 | import java.util.HashMap; |
| 10 | import java.util.Map; |
| 11 | import java.util.Optional; |
| 12 | import java.util.WeakHashMap; |
| 13 | |
| 14 | import org.openstreetmap.josm.gui.ExtendedDialog; |
| 15 | import org.openstreetmap.josm.tools.Logging; |
| 16 | |
| 17 | import mockit.Deencapsulation; |
| 18 | import mockit.Invocation; |
| 19 | import mockit.Mock; |
| 20 | import mockit.MockUp; |
| 21 | |
| 22 | /** |
| 23 | * MockUp for {@link ExtendedDialog} allowing a test to pre-seed uses of {@link ExtendedDialog} |
| 24 | * with mock "responses". This works best with {@link ExtendedDialog}s which have their contents set |
| 25 | * through {@link ExtendedDialog#setContent(String)} as simple strings. In such a case, responses can |
| 26 | * be defined through a mapping from content {@link String}s to button indexes ({@link Integer}s) or |
| 27 | * button names ({@link String}s). Example: |
| 28 | * |
| 29 | * <pre> |
| 30 | * new ExtendedDialogMocker(ImmutableMap.<String, Object>builder() |
| 31 | * .put("JOSM version 8,001 required for plugin baz_plugin.", "Download Plugin") |
| 32 | * .put("JOSM version 7,001 required for plugin dummy_plugin.", "Cancel") |
| 33 | * .put("Are you sure you want to do foo bar?", ExtendedDialog.DialogClosedOtherwise) |
| 34 | * .build() |
| 35 | * ); |
| 36 | * </pre> |
| 37 | * |
| 38 | * Testing examples with more complicated contents would require overriding |
| 39 | * {@link #getMockResult(ExtendedDialog)} with custom logic. |
| 40 | * |
| 41 | * The default {@link #getMockResult(ExtendedDialog)} will raise an |
| 42 | * {@link junit.framework.AssertionFailedError} on an {@link ExtendedDialog} activation without a |
| 43 | * matching mapping entry or if the named button doesn't exist. |
| 44 | * |
| 45 | * {@link #simpleStringContentMockResultMap} is exposed as a public field to allow for situations |
| 46 | * where the desired result might need to be changed mid-test. |
| 47 | */ |
| 48 | public class ExtendedDialogMocker extends MockUp<ExtendedDialog> { |
| 49 | /** |
| 50 | * Because we're unable to add fields to the mocked class, we need to use this external global |
| 51 | * mapping to be able to keep a note of the most recently set simple String contents of each |
| 52 | * {@link ExtendedDialog} instance - {@link ExtendedDialog} doesn't store this information |
| 53 | * itself, instead converting it directly into the embedded {@link Component}. |
| 54 | */ |
| 55 | protected final Map<ExtendedDialog, String> simpleStringContentMemo = new WeakHashMap<ExtendedDialog, String>(); |
| 56 | |
| 57 | /** |
| 58 | * Mapping to {@link Object}s so response button can be specified by String (label) or Integer - |
| 59 | * sorry, no type safety as java doesn't support union types |
| 60 | */ |
| 61 | final Map<String, Object> simpleStringContentMockResultMap; |
| 62 | |
| 63 | /** |
| 64 | * Construct an {@link ExtendedDialogMocker} with an empty {@link #simpleStringContentMockResultMap}. |
| 65 | */ |
| 66 | public ExtendedDialogMocker() { |
| 67 | this(new HashMap<String, Object>()); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Construct an {@link ExtendedDialogMocker} with the provided {@link #simpleStringContentMockResultMap}. |
| 72 | * @param simpleStringContentMockResultMap mapping of {@link ExtendedDialog} string contents to |
| 73 | * result button label or integer index. |
| 74 | */ |
| 75 | public ExtendedDialogMocker(final Map<String, Object> simpleStringContentMockResultMap) { |
| 76 | if (GraphicsEnvironment.isHeadless()) { |
| 77 | new WindowMocker(); |
| 78 | } |
| 79 | this.simpleStringContentMockResultMap = simpleStringContentMockResultMap; |
| 80 | } |
| 81 | |
| 82 | protected String getContentDescription(final String stringContent) { |
| 83 | return Optional.ofNullable(stringContent) |
| 84 | .map(sc -> "\""+sc+"\"") |
| 85 | .orElse("[no content or content non-simple]"); |
| 86 | } |
| 87 | |
| 88 | protected int getMockResult(final ExtendedDialog instance) { |
| 89 | final String stringContent = this.simpleStringContentMemo.get(instance); |
| 90 | final Object result = this.simpleStringContentMockResultMap.get(stringContent); |
| 91 | |
| 92 | if (result == null) { |
| 93 | fail( |
| 94 | "Unexpected ExtendedDialog content: " + this.getContentDescription(stringContent) |
| 95 | ); |
| 96 | } else if (result instanceof Integer) { |
| 97 | return (Integer) result; |
| 98 | } else if (result instanceof String) { |
| 99 | final String[] bTexts = Deencapsulation.getField(instance, "bTexts"); |
| 100 | final int position = Arrays.asList(bTexts).indexOf((String) result); |
| 101 | if (position == -1) { |
| 102 | fail("Unable to find button labeled \"" + result + "\". Instead found: " + Arrays.toString(bTexts)); |
| 103 | } |
| 104 | // buttons are numbered with 1-based indexing |
| 105 | return 1 + position; |
| 106 | } |
| 107 | |
| 108 | throw new IllegalArgumentException( |
| 109 | "ExtendedDialog contents mapped to unsupported type of Object: " + result |
| 110 | ); |
| 111 | } |
| 112 | |
| 113 | @Mock |
| 114 | private void setupDialog(final Invocation invocation) { |
| 115 | if (!GraphicsEnvironment.isHeadless()) { |
| 116 | invocation.proceed(); |
| 117 | } |
| 118 | // else do nothing - WindowMocker-ed Windows doesn't work well enough for some of the |
| 119 | // component constructions |
| 120 | } |
| 121 | |
| 122 | @Mock |
| 123 | private void setVisible(final Invocation invocation, final boolean value) { |
| 124 | if (value == true) { |
| 125 | final int mockResult = this.getMockResult((ExtendedDialog) invocation.getInvokedInstance()); |
| 126 | Deencapsulation.setField((ExtendedDialog) invocation.getInvokedInstance(), "result", mockResult); |
| 127 | Logging.info( |
| 128 | "ExtendedDialogMocker answering {0} to ExtendedDialog with content {1}", |
| 129 | mockResult, |
| 130 | this.getContentDescription(this.simpleStringContentMemo.get(invocation.getInvokedInstance())) |
| 131 | ); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | @Mock |
| 136 | private ExtendedDialog setContent(final Invocation invocation, final String message) { |
| 137 | final ExtendedDialog retval = invocation.proceed(message); |
| 138 | // must set this *after* the regular invocation else that will fall through to |
| 139 | // setContent(Component, boolean) which would overwrite it (with null) |
| 140 | this.simpleStringContentMemo.put((ExtendedDialog) invocation.getInvokedInstance(), message); |
| 141 | return retval; |
| 142 | } |
| 143 | |
| 144 | @Mock |
| 145 | private ExtendedDialog setContent(final Invocation invocation, final Component content, final boolean placeContentInScrollPane) { |
| 146 | this.simpleStringContentMemo.put((ExtendedDialog) invocation.getInvokedInstance(), null); |
| 147 | return invocation.proceed(content, placeContentInScrollPane); |
| 148 | } |
| 149 | } |