Add integration test for cover pair.line_col and position.line_col.

Author: huacnlee

grammars/Cargo.toml

@@ -19,6 +19,7 @@ pest_derive = { path = "../derive", version = "2.5.3" }
 
 [dev-dependencies]
 criterion = "0.3"
+pretty_assertions = "1.3.0"
 
 [[bench]]
 name = "json"

grammars/tests/examples.line-col.txt

@@ -0,0 +1,97 @@
+(2:3) "JSON Test Pattern pass1"
+(3:4) "object with 1 member"
+(3:28) "array with 1 element"
+(4:3) {}
+(5:3) []
+(6:3) -42
+(7:3) true
+(8:3) false
+(9:3) null
+(11:5) "integer"
+(11:16) 1234567890
+(12:5) "real"
+(12:13) -9876.543210
+(13:5) "e"
+(13:10) 0.123456789e-12
+(14:5) "E"
+(14:10) 1.234567890E+34
+(15:5) ""
+(15:10) 23456789012E66
+(16:5) "zero"
+(16:13) 0
+(17:5) "one"
+(17:12) 1
+(18:5) "space"
+(18:14) " "
+(19:5) "quote"
+(19:14) "\""
+(20:5) "backslash"
+(20:18) "\\"
+(21:5) "controls"
+(21:17) "\b\f\n\r\t"
+(22:5) "slash"
+(22:14) "/ & \/"
+(23:5) "alpha"
+(23:14) "abcdefghijklmnopqrstuvwyz"
+(24:5) "ALPHA"
+(24:14) "ABCDEFGHIJKLMNOPQRSTUVWYZ"
+(25:5) "digit"
+(25:14) "0123456789"
+(26:5) "0123456789"
+(26:19) "digit"
+(27:5) "special"
+(27:16) "`1~!@#$%^&*()_+-={':[,]}|;.</>?"
+(28:5) "hex"
+(28:12) "\u0123\u4567\u89AB\uCDEF\uabcd\uef4A"
+(29:5) "true"
+(29:13) true
+(30:5) "false"
+(30:14) false
+(31:5) "null"
+(31:13) null
+(32:5) "array"
+(32:13) [  ]
+(33:5) "object"
+(33:14) {  }
+(34:5) "address"
+(34:16) "50 St. James Street"
+(35:5) "url"
+(35:12) "http://www.JSON.org/"
+(36:5) "comment"
+(36:16) "// /* <!-- --"
+(37:5) "# -- --> */"
+(37:20) " "
+(38:5) " s p a c e d "
+(38:23) 1
+(38:25) 2
+(38:29) 3
+(42:7) 4
+(42:11) 5
+(42:31) 6
+(42:44) 7
+(42:55) "compact"
+(42:66) 1
+(42:68) 2
+(42:70) 3
+(42:72) 4
+(42:74) 5
+(42:76) 6
+(42:78) 7
+(43:5) "jsontext"
+(43:17) "{\"object with 1 member\":[\"array with 1 element\"]}"
+(44:5) "quotes"
+(44:15) "&#34; \u0022 %22 0x22 034 &#x22;"
+(45:5) "\/\\\"\uCAFE\uBABE\uAB98\uFCDE\ubcda\uef4A\b\f\n\r\t`1~!@#$%^&*()_+-=[]{}|;:',./<>?"
+(46:7) "A key can be any string"
+(48:3) 0.5
+(48:8) 98.6
+(50:3) 99.44
+(53:3) 1066
+(54:3) 1e1
+(55:3) 0.1e1
+(56:3) 1e-1
+(57:3) 1e00
+(57:8) 2e+00
+(57:14) 2e-00
+(58:2) "rosebud"
+(59:1)

grammars/tests/json.rs

@@ -11,12 +11,9 @@
 extern crate pest;
 extern crate pest_grammars;
 
-use std::fs::File;
-use std::io::Read;
-
 use pest::Parser;
-
 use pest_grammars::json::*;
+use pretty_assertions::assert_eq;
 
 #[test]
 fn null() {
@@ -164,10 +161,50 @@ fn object() {
 
 #[test]
 fn examples() {
-    let mut file = File::open("tests/examples.json").unwrap();
-    let mut data = String::new();
+    let raw = include_str!("examples.json");
+    let pairs = JsonParser::parse(Rule::json, raw).unwrap();
+
+    let expected = include_str!("examples.line-col.txt");
+
+    // Test for flatten iter, and use span.start_pos().line_col()
+    let mut out = String::new();
+    for pair in pairs.clone().flatten() {
+        let sub_pairs = pair.clone().into_inner();
+        if sub_pairs.count() == 0 {
+            let span = pair.as_span();
+            out.push_str(&build_line_col(span.start_pos().line_col(), span.as_str()));
+        }
+    }
+    assert_eq!(expected.trim(), out.trim());
+
+    // Test for nested iter, use pair.line_col()
+    let mut out = String::new();
+    for pair in pairs {
+        out.push_str(&build_result_for_pair(pair.clone()));
+    }
+
+    assert_eq!(expected.trim(), out.trim());
+}
 
-    file.read_to_string(&mut data).unwrap();
+fn build_line_col(line_col: (usize, usize), str: &str) -> String {
+    format!(
+        "({}:{}) {}\n",
+        line_col.0,
+        line_col.1,
+        str.replace('\n', "\\n")
+    )
+}
 
-    JsonParser::parse(Rule::json, &data).unwrap();
+fn build_result_for_pair(pair: pest::iterators::Pair<Rule>) -> String {
+    let mut out = String::new();
+
+    let sub_pairs = pair.clone().into_inner();
+    if sub_pairs.clone().count() == 0 {
+        out.push_str(&build_line_col(pair.line_col(), pair.as_str()));
+    } else {
+        for sub_pair in sub_pairs {
+            out.push_str(&build_result_for_pair(sub_pair));
+        }
+    }
+    out
 }