As part of jtwig#88 this tech task will allow to create jtwig functio…

…ns using type safe Java methods.
joao-de-melo · Apr 8, 2014 · e361cd7 · e361cd7
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diff --git a/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/DateFunctionsTest.java b/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/DateFunctionsTest.java
@@ -0,0 +1,50 @@
+/**
+ * Licensed 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.
+ */
+
+package com.lyncode.jtwig.test.functions;
+
+import com.lyncode.jtwig.exception.RenderException;
+import com.lyncode.jtwig.test.AbstractJtwigTest;
+import org.junit.Test;
+
+import java.util.Date;
+
+import static com.lyncode.jtwig.SyntacticSugar.given;
+import static com.lyncode.jtwig.SyntacticSugar.when;
+
+public class DateFunctionsTest extends AbstractJtwigTest {
+    @Test
+    public void dateFormatWithDate() throws Exception {
+        given(theContext().withModelAttribute("time", new Date()));
+        when(jtwigRenders(template("{{ date_format(time, 'yyyy') }}")));
+    }
+
+    @Test
+    public void dateFormat() throws Exception {
+        given(theContext().withModelAttribute("time", new Date()));
+        when(jtwigRenders(template("{{ date_format(time) }}")));
+    }
+
+    @Test
+    public void dateModify() throws Exception {
+        given(theContext().withModelAttribute("time", new Date()));
+        when(jtwigRenders(template("{{ date_format(time, '+1 day') }}")));
+    }
+
+    @Test(expected = RenderException.class)
+    public void dateModifyWithWrongFormat() throws Exception {
+        given(theContext().withModelAttribute("time", new Date()));
+        when(jtwigRenders(template("{{ date_modify(time, '+1 unknown') }}")));
+    }
+}
diff --git a/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/ListFunctionsTest.java b/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/ListFunctionsTest.java
@@ -0,0 +1,76 @@
+/**
+ * Licensed 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.
+ */
+
+package com.lyncode.jtwig.test.functions;
+
+import com.lyncode.jtwig.test.AbstractJtwigTest;
+import org.junit.Test;
+
+import static com.lyncode.jtwig.SyntacticSugar.then;
+import static com.lyncode.jtwig.SyntacticSugar.when;
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.is;
+
+public class ListFunctionsTest extends AbstractJtwigTest {
+    @Test
+    public void batch() throws Exception {
+        when(jtwigRenders(template("{{ batch([1,2,3,4], 3) }}")));
+        then(theRenderedTemplate(), is(equalTo("[[1, 2, 3], [4]]")));
+    }
+
+    @Test
+    public void batchWithPadding() throws Exception {
+        when(jtwigRenders(template("{{ batch([1,2,3,4], 3, 1) }}")));
+        then(theRenderedTemplate(), is(equalTo("[[1, 2, 3], [4, 1, 1]]")));
+    }
+
+    @Test
+    public void concatenate() throws Exception {
+        when(jtwigRenders(template("{{ concatenate(1, 2, 3) }}")));
+        then(theRenderedTemplate(), is(equalTo("123")));
+    }
+
+    @Test
+    public void join() throws Exception {
+        when(jtwigRenders(template("{{ join([1, 2, 3]) }}")));
+        then(theRenderedTemplate(), is(equalTo("123")));
+    }
+
+    @Test
+    public void joinWithCustomSeparator() throws Exception {
+        when(jtwigRenders(template("{{ join([1, 2, 3], ' - ') }}")));
+        then(theRenderedTemplate(), is(equalTo("1 - 2 - 3")));
+    }
+
+    @Test
+    public void merge() throws Exception {
+        when(jtwigRenders(template("{{ merge([1, 2, 3], [4]) }}")));
+        then(theRenderedTemplate(), is(equalTo("[1, 2, 3, 4]")));
+    }
+    @Test
+    public void mergeMultipleArgs() throws Exception {
+        when(jtwigRenders(template("{{ merge([1, 2, 3], [4], [5, 6]) }}")));
+        then(theRenderedTemplate(), is(equalTo("[1, 2, 3, 4, 5, 6]")));
+    }
+    @Test
+    public void slice() throws Exception {
+        when(jtwigRenders(template("{{ slice('abc', 1, 2) }}")));
+        then(theRenderedTemplate(), is(equalTo("bc")));
+    }
+    @Test
+    public void sort() throws Exception {
+        when(jtwigRenders(template("{{ sort([2, 1, 3]) }}")));
+        then(theRenderedTemplate(), is(equalTo("[1, 2, 3]")));
+    }
+}
diff --git a/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/MapFunctionsTest.java b/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/MapFunctionsTest.java
@@ -0,0 +1,31 @@
+/**
+ * Licensed 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.
+ */
+
+package com.lyncode.jtwig.test.functions;
+
+import com.lyncode.jtwig.test.AbstractJtwigTest;
+import org.junit.Test;
+
+import static com.lyncode.jtwig.SyntacticSugar.then;
+import static com.lyncode.jtwig.SyntacticSugar.when;
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.is;
+
+public class MapFunctionsTest extends AbstractJtwigTest {
+    @Test
+    public void map() throws Exception {
+        when(jtwigRenders(template("{{ keys({ one:1, two:2 }) }}")));
+        then(theRenderedTemplate(), is(equalTo("[one, two]")));
+    }
+}
diff --git a/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/MathFunctionsTest.java b/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/MathFunctionsTest.java
@@ -0,0 +1,47 @@
+/**
+ * Licensed 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.
+ */
+
+package com.lyncode.jtwig.test.functions;
+
+import com.lyncode.jtwig.test.AbstractJtwigTest;
+import org.junit.Test;
+
+import static com.lyncode.jtwig.SyntacticSugar.then;
+import static com.lyncode.jtwig.SyntacticSugar.when;
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.is;
+
+public class MathFunctionsTest extends AbstractJtwigTest {
+    @Test
+    public void absTest() throws Exception {
+        when(jtwigRenders(template("{{ abs(-1) }}")));
+        then(theRenderedTemplate(), is(equalTo("1")));
+    }
+
+    @Test
+    public void roundTest() throws Exception {
+        when(jtwigRenders(template("{{ round(1.12) }}")));
+        then(theRenderedTemplate(), is(equalTo("1")));
+    }
+    @Test
+    public void roundCeilTest() throws Exception {
+        when(jtwigRenders(template("{{ round(1.12, 'ceil') }}")));
+        then(theRenderedTemplate(), is(equalTo("2")));
+    }
+    @Test
+    public void roundFloorTest() throws Exception {
+        when(jtwigRenders(template("{{ round(1.62, 'floor') }}")));
+        then(theRenderedTemplate(), is(equalTo("1")));
+    }
+}
diff --git a/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/NumberFunctionsTest.java b/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/NumberFunctionsTest.java
@@ -0,0 +1,57 @@
+/**
+ * Licensed 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.
+ */
+
+package com.lyncode.jtwig.test.functions;
+
+import com.lyncode.jtwig.test.AbstractJtwigTest;
+import org.junit.Test;
+
+import static com.lyncode.jtwig.SyntacticSugar.then;
+import static com.lyncode.jtwig.SyntacticSugar.when;
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.is;
+
+public class NumberFunctionsTest extends AbstractJtwigTest {
+    @Test
+    public void testDefaultBehaviorWithoutSeparators() throws Exception {
+        when(jtwigRenders(template("{{ number_format(100000.1) }}")));
+        then(theRenderedTemplate(), is(equalTo("100000.1")));
+    }
+
+    @Test
+    public void testWithTwoDecimalDigits() throws Exception {
+        when(jtwigRenders(template("{{ number_format(100000.1, 2) }}")));
+        then(theRenderedTemplate(), is(equalTo("100000.10")));
+    }
+    @Test
+    public void testWithCommaSeparatingDecimal() throws Exception {
+        when(jtwigRenders(template("{{ number_format(100000.1, 2, ',') }}")));
+        then(theRenderedTemplate(), is(equalTo("100000,10")));
+    }
+    @Test
+    public void testWithThousandsSeparator() throws Exception {
+        when(jtwigRenders(template("{{ number_format(100000.1, 2, ',', ' ') }}")));
+        then(theRenderedTemplate(), is(equalTo("100 000,10")));
+    }
+    @Test
+    public void rangeTest() throws Exception {
+        when(jtwigRenders(template("{{ range(1,3) }}")));
+        then(theRenderedTemplate(), is(equalTo("[1, 2, 3]")));
+    }
+    @Test
+    public void rangeStepTest() throws Exception {
+        when(jtwigRenders(template("{{ range(1, 3, 2) }}")));
+        then(theRenderedTemplate(), is(equalTo("[1, 3]")));
+    }
+}
diff --git a/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/ObjectFunctionsTest.java b/jtwig-core-test/src/test/java/com/lyncode/jtwig/test/functions/ObjectFunctionsTest.java
@@ -0,0 +1,115 @@
+/**
+ * Licensed 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.
+ */
+
+package com.lyncode.jtwig.test.functions;
+
+import com.lyncode.jtwig.test.AbstractJtwigTest;
+import org.junit.Test;
+
+import static com.lyncode.jtwig.SyntacticSugar.*;
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.is;
+
+public class ObjectFunctionsTest extends AbstractJtwigTest {
+
+    @Test
+    public void defaultFunctionTest() throws Exception {
+        when(jtwigRenders(template("{{ default(null, 1) }}")));
+        then(theRenderedTemplate(), is(equalTo("1")));
+    }
+
+    @Test
+    public void defaultUndefinedFunctionTest() throws Exception {
+        when(jtwigRenders(template("{{ default(a.call, 1) }}")));
+        then(theRenderedTemplate(), is(equalTo("1")));
+    }
+
+    @Test
+    public void jsonEncode() throws Exception {
+        when(jtwigRenders(template("{{ json_encode({one: 'hello'}) }}")));
+        then(theRenderedTemplate(), is(equalTo("{\"one\":\"hello\"}")));
+    }
+
+    @Test
+    public void mapLength() throws Exception {
+        when(jtwigRenders(template("{{ length({one: 'hello'}) }}")));
+        then(theRenderedTemplate(), is(equalTo("1")));
+    }
+
+    @Test
+    public void listLength() throws Exception {
+        when(jtwigRenders(template("{{ length([1,2]) }}")));
+        then(theRenderedTemplate(), is(equalTo("2")));
+    }
+
+    @Test
+    public void stringLength() throws Exception {
+        when(jtwigRenders(template("{{ length('Hello') }}")));
+        then(theRenderedTemplate(), is(equalTo("5")));
+    }
+
+    @Test
+    public void mapFirst() throws Exception {
+        when(jtwigRenders(template("{{ first({one: 'hello'}) }}")));
+        then(theRenderedTemplate(), is(equalTo("hello")));
+    }
+
+    @Test
+    public void listFirst() throws Exception {
+        when(jtwigRenders(template("{{ first([1,2]) }}")));
+        then(theRenderedTemplate(), is(equalTo("1")));
+    }
+
+    @Test
+    public void stringFirst() throws Exception {
+        when(jtwigRenders(template("{{ first('Hello') }}")));
+        then(theRenderedTemplate(), is(equalTo("H")));
+    }
+
+    @Test
+    public void mapLast() throws Exception {
+        when(jtwigRenders(template("{{ last({one: 'hello'}) }}")));
+        then(theRenderedTemplate(), is(equalTo("hello")));
+    }
+
+    @Test
+    public void listLast() throws Exception {
+        when(jtwigRenders(template("{{ last([1,2]) }}")));
+        then(theRenderedTemplate(), is(equalTo("2")));
+    }
+
+    @Test
+    public void arrayLast() throws Exception {
+        given(theContext().withModelAttribute("array", new int[]{1,2}));
+        when(jtwigRenders(template("{{ last(array) }}")));
+        then(theRenderedTemplate(), is(equalTo("2")));
+    }
+
+    @Test
+    public void stringLast() throws Exception {
+        when(jtwigRenders(template("{{ last('Hello') }}")));
+        then(theRenderedTemplate(), is(equalTo("o")));
+    }
+
+    @Test
+    public void reserveTest() throws Exception {
+        when(jtwigRenders(template("{{ reverse('Hello') }}")));
+        then(theRenderedTemplate(), is(equalTo("olleH")));
+    }
+    @Test
+    public void reserveListTest() throws Exception {
+        when(jtwigRenders(template("{{ reverse([1,2]) }}")));
+        then(theRenderedTemplate(), is(equalTo("[2, 1]")));
+    }
+}